TY - JOUR A1 - Kaupp, Martin A1 - Zyubin, A. S. A1 - Charkin, O. P. A1 - Schleyer, P. v. R T1 - Non-Empirical Calculation of the Structure and Stability of Borohydrides of Zinc, Cadmium and Mercury of the Types MBH4 and HMBH4 N2 - No abstract available Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-46339 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schnering, Hans Georg von T1 - Gaseous Mercury(IV) Fluoride, HgF\(_4\): An ab Initio Study N2 - No abstract available KW - Anorganische Chemie Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60038 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schnering, Hans Georg von T1 - Ab Initio Comparision of the (MX\(_2\))\(_2\) Dimers (m=Zn, Cd, Hg; X F, Cl, H), and Study of Relativistic Effects in Crystalline HgF\(_2\) N2 - No abstract available KW - Anorganische Chemie Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-59971 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schnering, Hans Georg von T1 - Origin of the Unique Stability of Condensed-Phase Hg\(_2 ^{2+}\). An ab Initio Investigation of M\(^I\) and M\(^{II}\) Species (M= Zn, Cd, Hg) N2 - No abstract available KW - Anorganische Chemie Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-59981 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schnering, Hans Georg von T1 - The Dominance of Linear 2-Coordination in Mercury Chemistry: Quasirelativistic and Nonrelativistic ab Initio Pseudopotential Study of (HgX\(_2\))\(_2\) (X=F, Cl, Br, I, H) N2 - No abstract available KW - Anorganische Chemie Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-59995 ER - TY - JOUR A1 - Wissing, Elmo A1 - Kaupp, Martin A1 - Boersma, Jaap A1 - Spek, Anthony L. A1 - Koten, Gerard van T1 - Alkylation Reactions of Dialkylzinc Compounds with 1,4- Diaza- 1,3-butadienes: Cationic and radical Anionic Organozinc Intermediates. Molecular Structure of the Cationic Organozinc Species [MeZn(t-BuN=CHCH=N-t-Bu)]O\(_3\)SCF\(_3\) and Me\(_2\)Zn(bpy)(bpy = 2,2' -Bipyridine) N2 - No abstract available KW - Anorganische Chemie Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60008 ER - TY - JOUR A1 - Kaupp, Martin A1 - Dolg, Michael A1 - Stoll, Hermann A1 - Schnering, Hans Georg von T1 - Oxidation State +IV in Group 12 Chemistry : Ab Initio Study of Zinc(IV), Cadmium(IV), and Mercury(IV) Fluorides N2 - No abstract available KW - Anorganische Chemie Y1 - 1994 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60018 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schnering, Hans Georg von T1 - Molekulares Quecksilber(IV)-fluorid, HgF\(_4\): eine ab-initio-Untersuchung N2 - No abstract available KW - Anorganische Chemie Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60021 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague T1 - The Peculiar Coordination of Brium: Ab Initio Study of the Molecular and Electronic Structures of the Group 2 Dihydride Dimers M\(_2\)H\(_4\) (M=Mg, Ca, Sr, Ba) N2 - No abstract available KW - Anorganische Chemie Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60048 ER - TY - JOUR A1 - Lambert, Christoph A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague T1 - “Inverted” Sodium-Lithium Electronegativity: Polarity and Metalation Energies of Organic and Inorganic Alkali-Metal Compounds N2 - No abstract available KW - Anorganische Chemie Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60054 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague T1 - Ab Initio Study of Structures and Stabilities of Substituted Lead Compounds. Why is Inorganic Lead Chemistry Dominated by Pb\(^{II}\) but Organolead Chemistry by Pb\(^{IV}\)? N2 - No abstract available KW - Anorganische Chemie Y1 - 1993 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60069 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague A1 - Stoll, Hermann T1 - Model CaH\(_2\)(L) and CaF\(_2\)(L) Complexes (L = Ne, Ar, Kr, Xe, CO, N\(_2\)): Consequences of Interactions between "Inert-Gas" Ligands and Floppy Molecules N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60078 ER - TY - JOUR A1 - Kaupp, Martin A1 - Charkin, Oleg P. A1 - Schleyer, Paul von Rague T1 - The Ions MCp\(^{2+}\) (M = Sc, La): Significantly Bent Sandwich Species N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60082 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague A1 - Dolg, Michael A1 - Stoll, Hermann T1 - The Equilibrium Structures of Monomeric Group 2 and Lanthanide(II) Metallocenes MCp2 (M = Ca, Sr, Ba, Sm, Eu, Yb) Studied by ab Initio Calculations N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60139 ER - TY - JOUR A1 - Schleyer, Paul von Rague A1 - Kaupp, Martin A1 - Hampel, Frank A1 - Bremer, Matthias A1 - Mislow, Kurt T1 - Relationships in the Rotational Barriers of Group 14 Ethane Congeners H\(_3\)X-YH\(_3\) (X, Y = C, Si, Ge, Sn, Pb). Comparisons of ab Initio Pseudopotential and All-Electron Results N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60147 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul. von Rague A1 - Stoll, Hermann A1 - Preuss, Heinzwerner T1 - The Question of bending of the Alkaline Earth Dihalides MX\(_2\) (M = Be, Mg, Ca, Sr, Ba; X = F, C1, Br, I). An ab Initio Pseudopotential Study N2 - No abstract available KW - Anorganische Chemie Y1 - 1991 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60166 ER - TY - JOUR A1 - Kaupp, Martin A1 - Stoll, Hermann A1 - Preuss, Heinzwerner A1 - Kaim, Wolfgang A1 - Stahl, Thomas A1 - van Koten, Gerard A1 - Wissing, Elmo A1 - Smeets, Wilberth J. J. A1 - Spek, Anthony L. T1 - Theoretical and Experimential Study of Diamagnetic and Paramagnetic Products from Thermal and Light-Induced Alkyl Transfer between Zinc or Magnesium Dialkyls and 1,4-Diaza-1,3-butadiene Substrates N2 - No abstract available KW - Anorganische Chemie Y1 - 1991 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60173 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague T1 - Struktur- und Stabilitätstrends bei Fluor(methyl)plumbanen N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60091 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague T1 - The Structure and Stability Trends Fluoro(methyl)plumbanes N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60105 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague T1 - Do Low-Coordinated Group 1-3 cations M\(^n\) \(^+\)L\(_m\) (Mn\(^+\) = K\(^+\), Rb\(^+\), Cs\(^+\), Ca\(^{2+}\), Sr\(^{2+}\), Ba\(^{2+}\), Sc\(^{3+}\), Y\(^{3+}\), La\(^{3+}\); L = NH\(_3\), H\(_2\)0, HF; m = 1-3) with a Formal Noble-Gas Electron Configuration Favor Regular or "Abnormal" Shapes? N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60111 ER - TY - JOUR A1 - Mösges, Gabriele A1 - Hampel, Frank A1 - Kaupp, Martin A1 - Schleyer, Paul von Rague T1 - Experimental and Theoretical studies of Alkaline earth and Alkali Metal Coordination: X-ray crystal structures of Calcium, Strontium, and Barium Carbazoles and ab Initio Model calculations N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60127 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, Paul. von Rague T1 - The Structural Variations of Monomeric Alkaline Earth MX\(_2\)-Compounds (M = Ca, Sr, Ba; X = Li, BeH, BH\(_2\), CH\(_3\), NH\(_2\),OH, F). An ab Initio Pseudopotential Study N2 - No abstract available KW - Anorganische Chemie Y1 - 1992 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-60152 ER - TY - JOUR A1 - Kaupp, Martin A1 - Schleyer, P. v. R. A1 - Stoll, H. A1 - Preuss, H. T1 - Pseudopotential Approaches to Ca, Sr and Ba Hybrides. Why are some Alkaline Earth MX\(_2\) Compounds Bent? N2 - Quasirelativistic and nonrelativistic lo-valence-electronp seudopotentialsf or Ca, Sr, and Ba are presented. Results of calculations with 6s6p5d basis sets for MH, MH\(^+\) , and MH\(_2\), are compared with all-electron and 2-valence-electron pseudopotential calculations with and , without core-polarization potentials. The lo-valence-electron pseudopotential approach agrees well with all-electron calculations. It circumvents problems for the 2-valence-electron pseudopotentials arising from an incomplete separation of valence and subvalence shells in polar molecular systems due to strongly contracted occupied (n - 1 )-d orbitals. All higherlevel calculations show SrH\(_2\) and BaII\(_2\), to be bent with angles of - 140° and 120°, respectively, while CaH\(_2\) is linear with a flat potential-energy surface for the bending motion. The use of a core-polarization potential together with the 2-valence-electronp seudopotentiala pproach allows an investigation of the relative importance of core-polarization vs direct d-orbital bonding participation as reasons for the bent structures. The calculations strongly suggest that both contribute to the bending in SrH\(_2\) and BaII\(_2\). Even at the Hartree-Fock level of theory lovalence- electronp seudopotentialc alculations given reasonablea nglesw hen the potentialenergy surface is not exceedingly flat, and only moderately contracted basis sets including both compact d functions and diffuse p functions are used. The effect of core-valence correlation and the importance off functions also are discussed. KW - Chemie Y1 - 1991 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-31646 ER - TY - JOUR A1 - Kaupp, Martin A1 - Stoll, H. A1 - Preuss, H. T1 - Pseudopotential Calculations for Methyl Compounds of Zinc and Magnesium N2 - Pseudopotentials and valence basis sets to be used in calculations for organometallic compounds of zinc and magnesium have been tested in calculations for the M(CH\(_3\))\(_n\) (M = Zn, Mg; n = 1,2) molecules. Valence correlation effects are treated at the SDCI and CEPA levels. The capability of a polarization potential on zinc to account for the valence shell contracting effect of core valence correlation is studied. Properties considered are geometries, force constants, Mulliken populations, ionization potentials, atomization, and binding energies. Differences in bonding between the two dimethyl compounds are discussed. KW - Zink KW - Magnesium Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-46194 ER - TY - JOUR A1 - Paprocki, Valerie A1 - Hrobárik, Peter A1 - Harriman, Katie L. M. A1 - Luff, Martin S. A1 - Kupfer, Thomas A1 - Kaupp, Martin A1 - Murugesu, Muralee A1 - Braunschweig, Holger T1 - Ein neutrales 1,4‐Diborabenzol als \(\pi\)‐Ligand in Actinoidkomplexen JF - Angewandte Chemie N2 - Die \(\pi\)-Koordination von Aren- und anionischen Heteroarenliganden ist ein allgegenwärtiges Strukturmotiv in der metallorganischen Chemie der d- und f-Block-Elemente. Im Gegensatz dazu sind vergleichbare \(\pi\)-Wechselwirkungen neutraler Heteroarene, darunter auch solche neutraler, aromatischer Borheterocyclen, für den f-Block weit weniger verbreitet, was z. T. mit einer geringeren Effektivität der Metall-zu-Ligand-Rückbindung in Zusammenhang gebracht werden kann. Für die Actinoide sind π-Komplexe mit neutralen Heteroarenliganden sogar gänzlich unbekannt. Durch Ausnutzung der außergewöhnlichen \(\pi\)-Donorstärke eines 1,4-Diborabenzols ist es uns nun gelungen, eine Reihe stabiler π-Halbsandwichkomplexe des Thoriums(IV) und des Urans(IV) über einen erstaunlich einfachen Zugang zu generieren: Umsetzung eines 1,4-Diborabenzols mit ThCl\(_{4}\)(dme)\(_{2}\) bzw. UCl\(_{4}\) in Gegenwart einer Lewis-Base. Hierdurch konnten die ersten Beispiele für Actinoidkomplexe mit einem neutralen Borheterocyclus als Sandwich-artigem Liganden erhalten werden. Laut experimentellen und theoretischen Studien ist die starke Actinoid-Heteroaren-Wechselwirkung in diesen Molekülen im Wesentlichen von elektrostatischer Natur. Der kovalente Hauptbeitrag wird hingegen von der Ligand-zu-Metall-\(\pi\)-Wechselwirkung geleistet, während \(\pi\)/δ-Rückbindungsanteile kaum eine Rolle spielen. KW - Actinoide KW - Bindungsverhältnisse KW - Bor KW - Heterocyclen KW - \(\pi\)-Komplexe Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-218181 VL - 132 IS - 31 SP - 13209 EP - 13216 ER -