Publication List

B. Freitag, J. Pahl, C. Färber, S. Harder, Organometallics 2018, 37, 469-475.

"Synthesis of Heteroleptic Amidinate Strontium Ligands Using a Superbulky Ligand"

DOI: 10.1021/acs.organomet.7b00871


H. Bauer, M. Alonso, C. Färber, H. Elsen, J. Pahl, A. Causero, G. Ballmann, F. De Proft, S. Harder, Nat. Catal. 2018, 1, 40-47.

"Imine hydrogenation with simple alkaline earth metal catalysts"

DOI: 10.1038/s41929-017-0006-0


H. Bauer, L. Orzechowski, A. Escalona, G. Jansen, S. Harder, Organometallics 2017, 36, 4883-4890.

"Synthesis an d Structure of a Dimeric Iminophosphorane Stabilized Zinc Carbene: (ZnCR2)2 "

DOI: 10.1021/acs.organomet.7b00755


M. Wiesinger, B. Maitland, C. Färber, G. Ballmann, C. Fischer, H. Elsen, S. Harder, Angew. Chem. Int Ed. 2017, 56, 16654-16659.

"Simple Access to the Heaviest Alkaline Earth Metal Hydride: A Strongly Reducing Hydrocarbon-Soluble Barium Hydride Cluster"

DOI: 10.1002/anie.201708695


T. Vancompernolle, A. Valente, T. Chenal, P. Zinck, I. Del Rosal, L. Maron, M. Taoufik, S. Harder, R. M. Gauvin, Organometallics 2017, 36, 3912-3920.

"Silica-Grafted Lanthanum Benzyl Species: Synthesis, Characterization, and Catalytic Applications"

DOI: 10.1021/acs.organomet.7b00538


S. Brand, J. Pahl, H. Elsen, S. Harder, Eur. J. Inorg. Chem. 2017, 36, 4187-4195.

"Frustrated Lewis Pair  chemistry with magnesium Lewis acids"

DOI: 10.1002/ejic.201700787


A. Causero, H. Elsen, G. Ballmann, A. Escalona, S. Harder, Chem. Commun. 2017, 53, 10386-10389.

"Calcium stilbene complexes: structures and dual reactivity"

DOI: 10.1039/C7CC05792J


B. Maitland, M. Wiesinger, J. Langer, G. Ballmann, J. Pahl, H. Elsen, C. Färber, S. Harder, Angew. Chem. Int. Ed. 2017, 56, 11880-11884.

"A Simple Route to Calcium and Strontium Hydride Clusters"

DOI: 10.1002/anie.201706786


B. Freitag, C. A. Fischer, J. Penafiel, G. Ballmann, H. Elsen, C. Färber, D. F. Piesik, S. Harder, Dalton Trans. 2017, 46, 11192-11200.

"Bora-amidinate as cooperative ligand in group 2 metal catalysis"

DOI: 10.1039/C7DT02136D


A. Causero, H. Elsen, J. Pahl, S. Harder, Angew. Chem. Int. Ed. 2017, 56, 6906-6910.

"Calcium Hydride Reactivity: Formation of an Anionic N-Heterocyclic Olefin Ligand"

DOI: 10.1002/anie.201703037


B. Freitag, H. Elsen, J. Pahl, G. Ballmann, A. Herrera, R. Dorta, S. Harder, Organometallics 2017, 36, 1860-1866.

"s-Block Metal Dibenzoazepinate Complexes: Evidence for Mg-Alkene Encapsulation"

DOI: 10.1021/acs.organomet.7b00200


J. Langer, B. Maitland, S. Grams, A. Ciucka, J. Pahl, H. Elsen, S. Harder, Angew. Chem. Int. Ed. 2017, 56, 5021-5025.

"Self-Asslemby of Magnesium Hydride Clusters Driven by Chameleon-Type Ligands"

DOI: 10.1002/anie.201700719


H. S. Zijlstra, J. Pahl, J. Penafiel, S. Harder, Dalton Trans. 2017, 46, 3601-3610.

"Masked" Lewis-acidity of an aluminum α-phosphinoamide complex

DOI: 10.1039/c7dt00318h


A. Causero, G. Ballmann, J. Pahl, C. Färber, J. Intemann, S. Harder, Dalton Trans. 2017, 46, 1822-1831.

β-Ketiminate calcium hydride complexes: the importance of solvent effects

DOI: 10.1039/c6dt04659b


J. Langer, I. Kosygin, R. Puchta, J. Pahl, S. Harder, Chem. Eur. J. 2016, 22, 17425-17235.

A Soft Grip: Magnesium Complexes witha Phosphine-Modified Phosphonium Diylidic Lewis Base

DOI: 10.1002/chem.201603775


C. Boulho, H. Zijlstra, A. Hofmann, P. H. M. Budzelaar, S. Harder, Chem. Eur. J. 2016, 22, 17450-17459.

Insight into Oxide-Bridged Heterobimetallic Al/Zr Olefin Polymerization Catalysts

DOI: 10.1002/chem.201602674


A. Causero, G. Ballmann, J. Pahl, H. Zijlstra, C. Färber, S. Harder, Organometallics 2016, 35, 3350-3360.

Stabilization of Calcium Hydride Complexes by Fine Tuning of Amidinate Ligands

DOI: 10.1021/acs.organomet.6b00566


B. Schmid, S. Friess, A. Herrera, A. Linden, F. W. Heinemann, H. Locke, S. Harder, R. Dorta, Dalton Trans. 2016, 45, 12028-12040.

Chiral amino-phosphine and amido-phosphine complexes of Ir and Mg. Catalytic applications in olefin hydroamination

DOI: 10.1039/C6DT01146B


U. Chakraborty, F. Urban, B. Mühldorf, C. Rebreyend, B. de Bruin, N. van Velzen, S. Harder, R. Wolf, Organometallics 2016, 35, 1624-1631.

Accessing the CpArNi(I) Synthon: Reactions with N-Heterocyclic Carbenes, TEMPO, Sulfur, and Selenium

DOI: 10.1021/acs.organomet.6b00084


H. Bauer, J. Weismann, D. Saurenz, C. Färber, M. Schär, W. Gidt, I. Schädlich, G. Wolmershäusers, Y. Sun, S. Harder, H. Sitzmann, J. Organomet. Chem. 2016, 809, 63-73.

Chromocene, ferrocene, cobaltocene, and nickelocene derivates with isoproyl and methyl or trimethylsilyl substituents



H. Gehring, R. Metzinger, B. Braun, C. Herwig, S. Harder, K. Ray, C. Limberg, Dalton Trans. 2016, 45, 2989-2996.

An iron(II) hydride complex of a ligand with two adjecent β-diketiminate binding sites and its reactivity

DOI: 10.1039/c5dt04266f


U. Chakraborty, B. Mühldorf, N. J.C. van Velzen, B. de Bruin, S. Harder, R. Wolf, Inorg. Chem. 2016, 55, 3075-3078.

[CpArNi{Ga(nacnac)}]: An Open-Shell Nickel(I) Complex Supported by a Gallium(I) Carbenoid (CpAr = C5(C6H4‐4-Et)5, nacnac = HC[C(Me)N- (C6H3)‐2,6‐iPr2]2)

DOI: 10.1021/acs.inorgchem.5b02979


U. Chakraborty, M. Modl, B. Mühldorf, M. Bodensteiner, S. Demeshko, N. J. C. van Velzen, M. Scheer, S. Harder, R. Wolf, Inorg. Chem. 2016, 55, 3065-3074.

Pentaarylcyclopentadienyl Iron, Cobalt, and Nickel Halides

DOI: 10.1021/acs.inorgchem.5b02896


T. E. Stennett, J. Pahl, H. S. Zijlstra, F. W. Seidel, S. Harder, Organometallics 2016, 35, 207-217.

A Frustrated Lewis Pair Based on a Cationic Aluminum Complex and Triphenylphosphine



T. E. Stennett, S. Harder, Chem. Soc. Rev. 2016, 45, 1112-1128.

s-Block amidoboranes: syntheses, structures, reactivity and applications

DOI: 10.1039/c5cs00544b


S. Harder, B. Freitag, P. Stegner, J. Pahl, D. Naglav, Z. Anorg. Allg. Chem. 2015, 641, 2129–2134.

Strontium Chemistry with Silicone Grease

DOI: 10.1002/zaac.201500570


H. S. Zijlstra, M. C. A. Stuart, S. Harder,Macromolecules, 2015, 48, 5116–5119.

Structural Investigation of Methylalumoxane Using Transmission Electron Microscopy

DOI: 10.1021/acs.macromol.5b00803


R. Geitner, I. Kosygin, H. Görls, J. Pahl, S. Harder, M. Westerhausen, J. Langer, J. Coord. Chem., 2015, 68, 3302-3316.

An unsymmetrical phosphonium diylide with a fluorenylidene subunit and its lithium complexes

DOI: 10.1080/00958972.2015.1072625


J. Intemann, H. Bauer, J. Pahl, L. Maron, S. Harder, Chem. Eur. J. 201521, 1452-1461. (HOT PAPER)

Calcium Hydride Catalyzed Highly 1,2-Selective Pyridine Hydrosilylation

DOI: 10.1002/chem.201501072


C. Boulho, H. Zijlstra, S. Harder, Eur. J. Inorg. Chem. 2015, 2132-2138.

Oxide-Bridged Heterobimetallic Aluminum/Zirconium Catalysts for Ethylene Polymerization

DOI: 10.1002/ejic.201500123


H. Zijlstra, S. Harder, Eur. J. Inorg. Chem. 2015, 19-43. (invited Review)

Methylalumoxane - History, Production, Properties, and Applications

DOI: 10.1002/ejic.201590000


J. Penafiel, L. Maron, S. Harder, Angew. Chem., Int. Ed. 201554, 201-206.

Early Main Group Metal Catalysis: How Important is the Metal?

DOI: 10.1002/anie.201408814

S. Harder,* J. Spielmann, J. Intemann Dalton Trans. 201443, 14284-14290.

Synthesis and thermal decomposition of a pyridylene-bridged bis-β-diketiminate magnesium hydride cluster

DOI: 10.1039/C4DT00835A


J. Intemann, P. Sirsch, S. Harder* Chem. Eur. J. 201420, 11204-11213.

Comparison of Hydrogen Elimination from Molecular Zinc and Magnesium Hydride Clusters

DOI: 10.1002/chem.201402141


J. Intemann, M. Lutz, S. Harder* Organometallics 201433, 5722-5729.

Multinuclear Magnesium Hydride Clusters: Selective Reduction and Catalytic Hydroboration of Pyridines

DOI: 10.1021/om500469h


S. Harder,* D. Naglav, P. Schwerdtfeger, I. Nowik, R.H. Herber* Inorg. Chem. 2014, 53, 2188 – 2194.

Metal Atom Dynamics in Superbulky Metallocenes: A Comparison of (CpBIG)2Sn and (CpBIG)2Eu

DOI: 10.1021/ic4028546


S. Harder,* D. Naglav, C. Ruspic, C. Wickleder, M. Adlung, W. Hermes, M. Eul, R. Pöttgen, D. B. Rego, F. Poineau, K. R. Czerwinski, R. H. Herber, I. Nowik Chem. Eur. J. 2013, 19, 12272 – 12280.

Physical Properties of Superbulky Lanthanide Metallocenes: Synthesis and Extraordinary Luminescence of [EuII(CpBIG)2] (CpBIG=(4-nBu-C6H4)5-Cyclopentadienyl)

DOI: 10.1002/chem.201302021


J. Intemann, J. Spielmann, P. Sirsch,* S. Harder* Chem. Eur. J. 2013, 8478-8489.

Well-Defined Molecular Magnesium Hydride Clusters: Relationship between Size and Hydrogen Elimination Temperature

DOI: 10.1002/chem.201300684


H. Gehring, R. Metzinger, C. Herwig, J. Intemann, S. Harder, C. Limberg*, Chem. Eur. J.  2013, 19, 1629-1636.

Hydride Reactivity of NiII-X-NiII Entities: Mixed-Valent Hydrido Complexes and Reversible Metal Reduction

DOI: 10.1002/chem.201203201


D. Naglav, B. Tobey, S. Harder, A. Schnepf*, Z. Anorg. Allg. Chemie 2013, 639, 354-359.

GeCpbig2 [Cpbig = C5(CH2C6H4-iPr) 5]: A Flexible Sandwich Molecule

DOI: 10.1002/zaac.201200242


S. Perdriau, S. Harder*, H. J. Heeres*, J. G. De Vries*, ChemSusChem 2012, 5, 2427- 2434

Selective Conversion of Polyenes to Monoenes by RuCl3-Catalyzed Transfer Hydrogenation: The Case of Cashew Nutshell Liquid

DOI: 10.1002/cssc.201200503


S. Harder* Chem. Comm.  2012, 48, 11165-11177. (Invited Review – For issue: Frontiers in Molecular Main Group Chemistry)

Molecular early main group metal hydrides: synthetic challenge, structures and applications

DOI: 10.1039/C2CC33478J


S. Harder*, J. Spielmann, B. Tobey, Chem. Eur. J. 2012, 18, 1984-.

Calcium Amidoborane Ammine Complexes: Thermal Decomposition of Model Systems

DOI: 10.1002/chem.201102029


J. J. M. Lenders, A. Dey, P. H. H. Bomans, J. Spielmann, M. M. R. M.  Hendrix, G. de With, F. C. Meldrum, S. Harder*, N. A. J. M. Sommerdijk* J. Am. Chem. Soc. 2012,

High-Magnesium Calcite Mesocrystals: A Coordination Chemistry Approach

DOI: 10.1021/ja210791p


S. Harder*, J. Spielmann J. Organomet. Chem.  2012, 698, 7-14.

Calcium-mediated hydroboration of alkenes: "Trojan horse" or "true" catalysis?

DOI: 10.1016/j.jorganchem.2011.09.025


S. Harder*, J. Spielmann Chem. Comm. 2011, 47, 11945-11947.

Unprecendented reactivity of an aluminium hydride complex with ArNH2BH3: nucleophilic substitution versus deprotonation

DOI: 10.1039/c1cc14689k


S. Harder, Angew. Chem. 2011, 123, 8126; Angew. Chem. Int. Ed. Engl. 2011, 50, 7978.

Author profile – Sjoerd Harder

DOI: 10.1002/anie.201103731


S. Harder*, J. Spielmann, J. Intemann, H. Bandmann Angew. Chem. 2011, 123, 4242-4246; Angew. Chem. Int. Ed. Engl. 2011, 50, 4156-4160. (VIP)

Hydrogen Storage in Magnesium Hydride: The Molecular Approach

DOI: 10.1002/anie.201101153


J. Spielmann, S. Harder*, Dalton Trans. 2011, 40, 8314-8319.

Binuclear Magnesium Amidoborane Complexes: Characterization of a Trinuclear Thermal Decomposition Product

DOI: 10.1039/c1dt10694e


S. Harder*, Chem. Coord. Rev. 2011, 255, 1252-1267. (Invited Review)

Geminal Dianions Stabilized by Phosphonium Substituents

DOI: 10.1016/j.ccr.2010.11.021


S. Schulz*, S. Gondzik, D. Schuchmann, U. Westphal, L. Dobrzycki, R. Boese, S. Harder, Chem. Comm. 2010, 46, 7757-7759.

Reactions of Dizincocene with Sterically Demanding Bis(imino(di(phenyl)phosporano)methanes

DOI: 10.1039/c0cc02859b


S. Harder*, Chem. Rev. 2010, 110, 3852-3876. (Invited Review)

From Limestone to Catalysis: Application of Calcium Compounds as Homogeneous Catalysts

DOI: 10.1021/cr9003659


Z. Anorg. Allg. Chemie 2010, 636, 2205-2211. (Invited Review)

Benzyllanthanide Chemistry: Revival of Manzer's ortho-Me2N-Benzyl Ligand

DOI: 10.1002/zaac.201000189


D. Kuchenbecker, G. Jansen*, S. Harder* Z. Anorg. Allg. Chemie 2010, 636, 2257-2261.     

Insight in Structures of Superbulky Metallocenes with the CpBIG Ligand: Theoretical Considerations of Deca-Phenyl Metallocenes

DOI: 10.1002/zaac.201000192


J. Spielmann, D. F.-J. Piesik,  S. Harder*, Chem. Eur. J. 2010, 16, 8307-8318.

Thermal Decomposition of Mono- and Bimetallic Magnesium Amidoborane Complexes

DOI: 10.1002/chem.201000028


S. Harder*, Dalton Trans. 2010, 39, 6677-6681.

Synthesis and Structures of Bora-Amidinate Lanthanide(III) Complexes

DOI: 10.1039/C001966F


S. Harder*, D. Naglav Eur. J. Inorg. Chem. 2010, 2836-2840.

Bora-Amidinate Complexes of Lanthanide(II) Metals

DOI: 10.1002/ejic.201000094

S. Harder*, Organometallics 2005, 24, 373-379

Syntheses and Structures of Homoleptic Lanthanide Complexes with Chelating o-Dimethylaminobenzyl Ligands: Key Precursors in Lanthanide Chemistry

DOI: 10.1021/om049327p


C. Ruspic, S. Harder*, Organometallics 2005, 24, 5506-5508

Synthesis and Structure of an Arylcalcium Compound with an Unusual Calcium Tetrahedron Containing an Encapsulated Oxide

DOI: 10.1021/om050760o


F. Feil, S. Harder*, European Journal of Inorganic Chemistry 2005, 4438-4443

Guanidinate Complexes of Heavier Alkaline-Earth Metals (Ca, Sr): Syntheses, Structures, Styrene Polymerization and Unexpected Reaction Behaviour

DOI: 10.1002/ejic.200500514


F. Buch, J. Brettar, S. Harder*, Angewandte Chemie 2006, 118, 2807-2811; 

Angewandte ChemieInt. Ed. Engl. 2006, 45, 2741-2745

Hydrosilylation of Alkenes with early Main Group Metal Catalysts

DOI: 10.1002/anie.200504164


S. Harder* , J. Brettar, Angewandte Chemie 2006, 118, 3554-3558;

Angewandte Chemie Int. Ed. Engl. 2006, 45, 3474-3478

Rational Design of a Well-Defined Soluble Calcium Hydride Complex (VIP)

DOI: 10.1002/anie.200601013


*Article highlighted in: Stabilizing Ca-H

Editor's choice Science 2006, 312, 816-817


L. Orzechowski, G. Jansen, S. Harder*, Journal of the American Chemical Society 2006, 128, 14676-14684

Synthesis, Structure, and Reactivity of a Stabilized Calcium Carbene: R2CCa

DOI: 10.1021/ja065000z


C. Ruspic, S. Nembenna, A. Hofmeister, J. Magull, S. Harder*, H.W. Roesky*,

Journal of the American Chemical Society 2006, 128, 15000-15004

A Well-Defined Hydrocarbon-Soluble Calcium Hydroxide: Synthesis, Structure, and Reactivity



L. Orzechowski, S. Harder*, Organometallics 2007, 26, 2144-2148

Isolation of an Intermediate in the Catalytic Trimerization of Isocyanates by a Monomeric Calcium Carbene with Chelating Iminophosphorane Substituents

DOI: 10.1021/om070023n


C. Ruspic, J. Spielmann, S. Harder*, Inorganic Chemistry 2007, 46, 5320-5326

Syntheses and Structures of Ytterbium(II) Hydride and Hydroxide Complexes: Similarities and Differences with their Calcium Analogues

DOI: 10.1021/ic700403d


F. Buch, S. Harder*, Organometallics 2007, 26, 5132-5135

Azametallacyclopropane Ca(h2-Ph2CNPh)(hmpa)3: a Calcium-Alternative to a Versatile Ytterbium(II) Catalyst

DOI: 10.1021/om700626s


L. Orzechowski, S. Harder*, Organometallics 2007, 26, 5501-5506

Syntheses. Structures and Reactivity of Barium Carbene Complexes with Chelating Bis-Iminophosporano Arms

DOI: 10.1021/om700640c


D. F.-J. Piesik, K. Häbe, S. Harder*,  European Journal Inorganic Chemistry  2007, 5652-5661

Ca-Mediated Styrene Polymerization: Tacticity Control by Ligand Design

DOI: 10.1002/ejic.200700802


J. Spielmann, S. Harder*, Chemistry European Journal 2007, 13, 8928-8938

Hydrocarbon-Soluble Calcium Hydride: A "Worker-Bee" in Calcium Chemistry

DOI: 10.1002/chem.200701028


C. Ruspic, S. Harder*, Inorganic Chemistry 2007, 46, 10426-10433

A Big Ligand for Stabilization of Small Functionalities in Calcium Chemistry

DOI: 10.1021/ic701479r


F. Buch, S. Harder*, Zeitschrift für Naturforschung  2008, 62b, 169-177.

A Study on Chiral Organocalcium Complexes: Attempts in Enantioselective Catalytic Hydrosilylation and Intramolecular Hydroamination of Alkenes


S. Harder*, C. Ruspic, N. Ní Bhriain, F. Berkermann, M. Schürmann, Zeitschrift für Naturforschung 2008, 62b, 267-274

Benzyl Complexes of Lanthanide(II) and Lanthanide(III) Metals: Trends and Comparisons


J. Spielmann, S. Harder*, European  Journal of Inorganic Chemistry  2008, 1480-1486

Reduction of Ketones with Hydrocarbon-Soluble Calcium Hydride: Stoichiometric Reactions and Catalytic Hydrosilylation

DOI: 10.1002/ejic.200701255


C. Ruspic, J. R. Moss, M. Schürmann, S. Harder*, Angewandte Chemie 2008, 120, 2151-2156; Angewandte Chemie Int. Ed. Engl. 2008, 47, 2121-2126

Remarkable Stability of Metallocenes with Superbulky Ligands: Spontaneous Reduction of SmIII to SmII  (VIP)

DOI: 10.1002/anie.200705001


*Article highlighted in: Superbulky Ligands and Trapped Electrons: New Perspectives in Divalent Lanthanide Chemistry

G. Meyer Angew. Chem. 2008, 120, 5050-5042; Angew. Chem. Int. Ed. Engl. 2008, 47, 4962-4964


S. Range, D. F.-J. Piesik and S. Harder*, European  Journal of Inorganic Chemistry  2008, 3442-3451

Binuclear Magnesium, Calcium and Zinc Complexes Based on Bis(salicylaldimine) Ligands with Rigid Bridges

DOI: 10.1002/ejic.200800308


J. Spielmann, G. Jansen, H. Bandmann, S. Harder*, Angewandte Chemie 2008,   120, 6386-6391; Angewandte Chemie Int. Ed. Engl. 2008, 47, 6290-6295

Calcium Amidoborane Hydrogen Storage Materials: Crystal Structures of Decomposition Products (HOT PAPER)

DOI: 10.1002/ange.200802037


L. Orzechowski, D. F.-J. Piesik, C. Ruspic, S. Harder*,Dalton Transactions 2008, 4742-4746

Superbulky Metallocene Complexes of the Heavier Alkaline-Earth Metals Strontium and Barium

DOI: 10.1039/B809872G


D. F.-J. Piesik, S. Range, S. Harder*, Organometallics 2008, 27, 6178-6187

Bimetallic Calcium and Zinc Complexes with Bridged b-Diketiminate Ligands: Investigations on Epoxide/CO2 Copolymerization

DOI: 10.1021/om800597f


J. Spielmann, F. Buch, S. Harder*, Angewandte Chemie 2008, 120, 9576-9580;

Angewandte Chemie Int. Ed. Engl. 2008, 47, 9434-9438.

Early Main Group Metal Catalysts for the Hydrogenation of Alkenes with H2 (Very Important Paper – VIP)

DOI: 10.1002/anie.200804657


S. Harder*, C. Ruspic, Journal of Organometallic Chemistry 2009, 694, 1180-1184

Insight in cyclopentadienyl metal complexes with superbulky ligands: the crystal structure of [CpBIGK]¥

DOI: 10.1016/j.jorganchem.2008.09.073


L. Orzechowski, G. Jansen, M. Lutz, S. Harder*, Dalton Transactions 2009, 2985-2964

Calcium Carbene Complexes with Boranophosphorano Side-Arms: CaC[P(Ph)2BH3]2

DOI: 10.1039/B823224E


R. Gauvin*, F. Buch, L. Delevoye, S. Harder*, Chemistry European Journal 2009, 15, 4382-4393

Well-Defined Silica-Supported Calcium Reagents: Control of Schlenk Equilibrium by Grafting

DOI: 10.1002/chem.200802512


L. Orzechowski, G. Jansen, S. Harder*Angewandte Chemie 2009, 121, 3883-3887;

Angewandte ChemieInt. Ed. Engl. 2009, 48, 3825-3829

Methandiide Complexes (R2CM2) of the Heavier Alkali Metals (M = K, Rb, Cs): Reaching the Limit?

DOI: 10.1002/anie.200900830


*Article highlighted in: Organometallic Compounds of the Heavier s-BlockElements—What Next?

J. D. Smith Angew. Chem. 2009, 121, 6721-6723; Angew. Chem. Int. Ed. Engl. 2009, 48, 6597-6599


J. Spielmann, S. Harder*, Journal of the American Chemical Society 2009, 131, 5064-5065

Hydrogen Elimination in Bulky Calcium Amidoborane Complexes: Isolation of a Calcium Borylamide Complex

DOI: 10.1021/ja901073c


J. Spielmann, D. F.-J. Piesik, B. Wittkamp, G. Jansen, S. Harder*, Chemical Communications 2009, 3455-3456

Convenient Synthesis and Crystal Structure of a Monomeric Zinc Hydride Complex with a Three-Coordinate Metal Center

DOI: 10.1039/B906319F


D. F.-J. Piesik, R. Stadler, S. Range, S. Harder*, European Journal of Inorganic Chemistry 2009, 3569-3576

Binuclear Magnesium, Calcium, and Zinc Complexes Based on Nitrogen-Nitrogen-Coupled Salicylaldiminate and b-Diketiminate Ligands

DOI: 10.1002/ejic.200900435


D. F.-J. Piesik, P. Haack, S. Harder*, C. Limberg, Inorganic Chemistry 2009, 3569-3576

Peculiar Binding Modes of a Ligand with Two Adjacent β-Diiminato Binding Sites in Alkali and Alkaline-Earth Metal Chemistry

DOI: 10.1021/ic9017536


S. Schulz*, T. Eisenmann, D. Schuchmann, M. Bolte, M. Kirchner, R. Boese, J. Spielmann, S. Harder, Zeitschrift für Naturforschung 2009, 64b, 1397-1400

Solid State and Solution Studies on a b-Diketiminate Zinc Hydride Complex


J. Spielmann, M. Bolte, S. Harder*,Chemical Communications 2009, 6934-6936

Synthesis and Structure of a Magnesium–Amidoborane Complex and its Role in Catalytic Formation of a New Bis-Aminoborane Ligand

DOI: 10.1039/B914979A

A. Weeber, S. Harder and H.-H. Brintzinger, K. Knoll, Organometallics 2000, 19, 1325-1332
Homoleptic and Heteroleptic Barium Benzyl Complexes: Synthesis and Reactivity as Initiators for Anionic Styrene Polymerizations


F. Feil, S. Harder, Organometallics 2000, 19, 5010-5015
a,a-Bis(trimethylsilyl)-Substituted Benzyl Complexes of Potassium and Calcium


S. Harder, F. Feil, A. Weeber, Organometallics 2001, 20, 1044-1046
Structure of a Benzylcalcium Diastereomer: an Initiator for the Anionic Polymerization of Styrene 


F. Feil, S. Harder, Organometallics 2001, 20, 4616-4622
Benzyl Complexes of the Heavier Alkaline-Earth Metals: the First Crystal Structure of a Dibenzylstrontium Complex


S. Harder, F. Feil, K. Knoll, Angewandte Chemie 2001, 113, 4391-4394; Angewandte ChemieInt. Ed. Engl., 2001, 40, 4261-4264
Novel Calcium Half-Sandwich Complexes for the Living and Stereoselective Polymerization of Styrene


S. Harder, F. Feil, T. Repo, Chemistry: European Journal 2002,8, 1991-1999
"Alkaline-Earth Metals in a Box" Structures of Solvent-Separated Ion-Pairs


S. Harder, F. Feil, Organometallics 2002, 21, 2268-2274
Dimeric Benzylcalcium Complexes: Influence of THF in Stereoselective Styrene Polymerization


S. Harder, Chemistry: European Journal 2002,8, 3229-3232
Schlenk’s Early "Free" Carbanions


S. Harder, Organometallics 2002, 21, 3782-3787
Homoleptic b-Diketiminato Complexes of the Alkaline-Earth Metals: Trends in the Series Mg, Ca, Sr and Ba
DOI: 10.1021/om0202827


S. Harder, F. Feil, Polymeric Materials, Science and Engineering 2002, 87, 53
Living Alkene Polymerization


F. Feil, S. Harder, Macromolecules 2003, 36, 3446-3448
New Stereochemical Assignments of 13C NMR Signals for Predominantly Syndiotactic Polystyrene


F. Feil, C. Müller, S. Harder, Journal of Organometallic Chemistry 2003, 683, 56-63, (invited publication for the special issue on "Advances in Allyl and Benzyl Organometallic Chemistry")
a-Methyl-Benzylcalcium Complexes: Syntheses, Structures and Reactivity


F. Feil, S. Harder, European Journal of Inorganic Chemistry 2003, 3401-3408 (invited publication in memory of Ron Snaith)      
Hypersilyl-substituted Complexes of Group 1 and 2 Metals: Syntheses, Structures and Use in Styrene Polymerisation
DOI: 10.1002/ejic.200300149


S. Harder, Angewandte Chemie 2003, 115, 3553-3556; Angewandte Chemie Int. Ed. Engl. 2003, 42, 3430-3434
Intramolecular C-H Activation in Alkaline-Earth Metal Complexes


S. Harder, S. Müller, E. Hübner,  Organometallics 2004, 23, 178-183
Syntheses and Crystal Structures of Simple Dibenzylcalcium Complexes: Useful Reagents in the Preparation of Calcium Compounds


S. Harder, R. Meijboom, J.R. Moss, Journal of Organometallic Chemistry 2004, 689, 1095-1101
Selective Lithiation and Crystal Structures of G1-Carbosilane Dendrimers with 1,3-Dimethoxybenzene Functionalities


S. Harder, Angewandte Chemie 2004, 116, 2768-2773; Angewandte Chemie Int. Ed. Engl. 2004, 43, 2714-2718
The Chemistry of CaII and YbII: Astoundingly Similar But Not Equal

S. Harder, M. Lutz, A. Streitwieser, Journal of the American Chemical Society 1995, 117, 2361-2362
Crystal Structure of Trilithiated Dimethylphenol


S. Harder, A. Streitwieser, J.T. Petty, P. v. R. Schleyer, Journal of the American Chemical Society 1995, 117, 3253-3259
Ion Pair SN2 Reactions: Theoretical Study of Inversion and Retention Mechanisms

S. Harder,  M.Lutz, T. Kremer, Organometallics, 1995, 14, 2133-2135
Crystal Structure of a Carbanion-Amide Combination with Lithium and Sodium Cations


S. Harder, M.H. Prosenc, U. Rief, Organometallics, 1996, 15, 118-124
Syntheses and Structures of Anionic Sodocene Sandwiches


S. Harder, M.H. Prosenc, Angewandte Chemie 1996, 108, 101-103; Angewandte Chemie Int. Ed. Engl. 1996, 35, 97-99.
The Heaviest Alkali Metallocene: Structure of an Anionic Cesocene Triple-Decker
DOI: 10.1002/anie.199600971

*Article highlighted in: Schiefer Sandwich mit Caesiumatomen
Frankfurter Allgemeine Zeitung: Natur & Wissenschaft – 24.01.1996


T. Kremer, S. Harder, M. Junge, P. v. R. Schleyer, Organometallics, 1996, 15, 585-595
Mixed Aggregates of Alkali Metal Compounds: Structure and Stability of"Superbase" Models


G. Müller, M. Lutz, S. Harder, Acta Crystallographica B  1996, B52, 1014-1022
Methyl Group Conformation-Determining Intermolecular C-H···O Hydrogen Bonds: Structure of N-Methyl-2-pyrrolidone
DOI: 10.1107/S0108768196008300


S. Harder, M. Lutz, A.W.G. Straub, Organometallics 1997, 16, 107-113
Silicon-Bridged Alkali-Metal and Alkaline-Earth-Metal Metallocene Complexes


S. Harder, M. Lutz, Organometallics 1997, 16, 225-230
The Phosphonium Dibenzylide Anion as a Ligand in Organobarium Chemistry


S. Harder, Angewandte Chemie 1998, 110, 1357-1359; Angewandte Chemie Int. Ed. Engl. 1998, 37, 1239-1241
[Cp3Ba], the First Structurally Known Barate Complex


S. Harder, Coordination Chemistry Reviews 1998, 176, 17-66, Invited Review:
Recent Developments in Cyclopentadienyl-Alkalimetal Chemistry
(Due to internal problems at Elsevier Science Publications the original article was published with errors. The subsequently printed error-free original article can be obtained free of charge from the author; see also erratum in Coordination Chemistry Reviews 2000, 199, 331-334)
DOI: 10.1016/S0010-8545(98)00113-1


S. Harder, Chemistry:  European Journal 1999,5, 1852-1860
Can C-H···C(p) Bonding Be Classified as Hydrogen Bonding? A Systematic Investigation of C-H···C(p) Bonding to Cyclopentadienyl Anions


S. Harder, M. Lutz, S.J. Obert, Organometallics 1999, 18, 1808-1810
Crystal Structure of a Silicon-Bridged Anionic Sodocene Complex: Evidence for Alkene-Na+ p-Bonding

S. Harder, J. Boersma, Brandsma*, J.A. Kanters, A.J.M. Duisenberg, J.H. van Lenthe, L. Organometallics 1990, 9, 511-516
Isolation and Crystal Structure of a Presumed Intermediate in the Reaction of an Organolithium Compound with an Epoxide
DOI: 10.1021/om00116a032


R. den Besten, S. Harder, L. Brandsma*, Journal of Organometallic Chemistry, 1990, 385, 153-159
A Method for the Determination of the Degree of Association of Organolithium Compounds in Liquid Ammonia


S. Harder, L. Brandsma, J.A. Kanters, A.J.M. Duisenberg, J.H. van Lenthe, Journal of Organometallic Chemistry 1991, 420, 143-154
The Structure of 2-(Diphenylphosphino)phenyllithium: the Significance of P-Li Bonding


R. Nijs, H.D. Verkruijsse, S. Harder, A.C.H.T.M. van der Kerk, L. Brandsma*, Synthetic Communications 1991, 21, 653-656
A Peculiar Reaction of Aminoallenes with Aromatic and Heteroaromatic Aldehydes
DOI: 10.1080/00397919108020832


S. Harder, J. Boersma, L. Brandsma*, J.A. Kanters, A.J.M. Duisenberg, J.H. van Lenthe, Organometallics 1991, 10, 1623-1627
Crystal Structure of Trimeric (2,6-Di-tert-butoxyphenyl)lithium


S. Harder*, P.F. Ekhart, L. Brandsma, J.A. Kanters, A.J.M. Duisenberg, P. v. R. Schleyer, Organometallics 1992, 11, 2623-2627
Crystal Structure of [2-(Dimethylamino)-6-(tert-butoxy)phenyl]lithium


R.W. Gedridge*, L. Brandsma*, Jr., R.A. Nissan, H.D. Verkruijsse, S. Harder, R.L.P. de Jong, C.J. O´Connor, Organometallics 1992, 11, 418-422
Preparation of Symmetrical Di-1-alkynyl Tellurides and Diynes by Reduction of TeCl4 with 1-Alkynyllithium Reagents

R.E. Dixon, A. Streitwieser*, K.E. Laidig, R.W.F. Bader*, S. Harder, Journal of Physical Chemistry 1993, 97, 3728-3736
Reaction of Lithium Amide with Methane. An Ab Initio and Atoms in Molecules Study


S. Harder, A. Streitwieser*, Angewandte Chemie 1993, 105, 1108-1110; Angewandte Chemie Int. Ed. Engl. 1993, 32, 1066-1068
First Structure of  a Mixed Organosodium/Lithium Alkoxide Compound: Model for a Superbase.


S. Harder, J. H. van Lenthe, N.J.R. van Eikema Hommes, P. von R. Schleyer*Journal of the American Chemical Society, 1994, 116, 2508-2514
Nucleophilic Ring Opening of Epoxides by Organolithium Compounds: Ab Initio Mechanisms


S. Harder*, M.H. Prosenc, Angewandte Chemie 1994, 106, 1830-1832; Angewandte Chemie Int. Ed. Engl. 1994, 33, 1744-1746
The Simplest Metallocene Sandwich: The Lithocene Anion

Article highlighted in: The Lithocene Anion and Open Calcocene – New Encouragements in the Chemistry of Alkali and Alakaline Earth Metallocenes
D. Stalke Angew. Chem. 2009, 106, 2256-2259; Angew. Chem. Int. Ed. Engl. 2009, 33, 2168-2171


S. Harder*, M. Lutz, Organometallics, 1994, 13, 5173-5176
Lithiation of N,N,N´,N´-Tetramethylethylenediamine and the Structure in a Mixed Organolithium Aggregate
DOI: 10.1021/om00024a072

J.A. Kanters, S. Harder, N.S. Poonia, Acta Crystallographica 1987, C43, 1042-1045
Coordination Chemistry of Alkali and Alkaline Earth Cations: the Structure of Bis(3,5,-dinitrobenzoato)(tetraethyleneglycol)strontium (II) Monohydrate


S. Harder, L. Brandsma, J.A. Kanters, A.J.M. Duisenberg, Acta Crystallographica 1987, C43, 1535-1537
Structure of Bis[tert-butyl (2-Lithiophenyl) Sulfide] [N, N, N´, N´-Tetramethylethylenediamine]


G.P.M. van Mier, J.A. Kanters, S. Harder, Acta Crystallographica 1987, C43, 2327-2330
A Tetrahedrally Surrounded Nickel(II) Complex: The Structure of Dichloro[2-(diphenylphosphino)-N,N-dimethylbenzylamine-N,P]nickel(II)


W. de Graaf, S. Harder, J. Boersma*, G. van Koten, J.A. Kanters, Journal of Organometallic Chemistry, 1988, 358, 545-562
Organopalladium Complexes with Bidentate Phosphorus and Nitrogen Containing Ligands


W. Bauer, P.A.A. Klusener, S. Harder, J.A. Kanters, A.J.M. Duisenberg , L. Brandsma, P. v. R. Schleyer*, Organometallics, 1988, 7, 552-555.
Structure of 2-Lithiophenyl tert-Butyl Thioether in Solution and in the Solid State. Detection of Agostic Li-H Interactions by NMR Spectroscopy


S. Harder, J. Boersma, L. Brandsma*, J.A. Kanters, Journal of Organometallic Chemistry 1988, 339, 7-15
Crystal Structure of [1-Lithio-2-Methoxybenzene]8.TMEDA
: 10.1016/0022-328X(88)80519-9


S. Harder, J. Boersma, L. Brandsma*, A. van Heteren J.A. Kanters, W. Bauer, P. v. R. Schleyer* , Journal of the American Chemical Society 1988, 110, 7802-7806
Planar Tetracoordinate Carbon Atoms Hidden in the Tetrameric Aggregate of (2,6-Dimethoxyphenyl)lithium


S. Harder, J. Boersma*, L. Brandsma, G.P.M. van Mier, J.A. Kanters, Journal of Organometallic Chemistry, 1989, 364, 1-15
The Molecular Structure of 1-Lithio-2-methoxybenzene in the Solid State and in Solution


S. Harder*, J. Boersma, J.A. Kanters, L. Brandsma, W. Bauer, R. Pi, P. v. R. Schleyer, H. Schöllhorn, U. Thewalt, Organometallics 1989, 8,1688-1696
Structure of 2-Lithiobenzofuran-TMEDA and 2-Lithiobenzothiophene-TMEDA in the Solid State and in Solution

S. Harder*, J. Boersma, L. Brandsma, J.A. Kanters, W. Bauer, P. v. R. Schleyer, Organometallics, 1989, 8, 1696-1700
Crystal Structure of [2,6-Bis(dimethylamino)phenyl]lithium: The First Trimeric Organolithium Compound