Výsledky vyhledávání - "Uwe Denninger"

Synthese, Struktur und Reaktivität zweikerniger Pentamethyl-Cyclopentadien-Nickelkomplexe mit verbrückenden Butadienliganden

Autor: Richard Goddard, Uwe Denninger, Christian W. Lehmann, Carl Krüger, Jörg J. Schneider

Publikováno v: Journal of Organometallic Chemistry. 582:188-194

[{(η 5 -Me 5 Cp)Ni} 2 (μ-η 2 :η 2 -C 4 H 6 )] 3 was obtained from [(η 5 -Me 5 Cp)Ni(acac)] 1 and magnesiumbutadiene. The crystal structure of 3 was determined by X-ray diffraction and displays an elongated Ni–Ni bond compared with the Ni–Ni

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4d7e9b1001aa15d2de5ffd1c24fc231c
https://doi.org/10.1016/s0022-328x(99)00034-0

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Bimetallische Allylkomplexe polycyclischer Kohlenwasserstoffe: Erste Beispiele aus der Übergangsmetallchemie

Autor: Jörg J. Schneider, Richard Goddard, Carl Krüger, Uwe Denninger, Dirk Wolf

Publikováno v: Journal of Organometallic Chemistry. 579:139-146

Exclusively, η3-allyl coordination is observed for the first nickel and cobalt bimetallic complexes containing the polycondensed aromatics anthracene, pyrene and perylene. Access to these compounds is achieved either via reaction of magnesiumanthrac

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e4ed48aa2b7c772aa1afcbf249cb0ea6
https://doi.org/10.1016/s0022-328x(98)01215-7

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Enantiomerically Pure Organolanthanides for Asymmetric Catalysis. Synthesis, Structures, and Catalytic Properties of Complexes Having Pseudo-meso-Me2Si(η5-C5H3R)(η5-C5H3R*) Ancillary Ligation

Autor: Uwe Denninger, Peter W. Roesky, Tobin J. Marks, Charlotte L. Stern

Publikováno v: Organometallics. 16:4486-4492

As established by NMR, circular dichroism, and X-ray diffraction, organolanthanides of the new chelating ligand Me2Si(tBuCp)[(+)-neo-Men-Cp]2- (Men = menthyl; Cp = η5-C5H3) preferentially adopt a single chiral configuration of the asymmetric metal�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b5a52acaf3e15e2911425fb5d12dae37
https://doi.org/10.1021/om970434b

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Zur Reaktion von Natriumtetracarbonylcobaltat mit Aluminiumtrichlorid. Molekiilstruktur von Co4(CO)13Al(THF)3Co3(CO)10 / On the Reaction of Sodium Tetracarbonylcobaltate with Aluminiumtrichlorid. Molecular Structure of Co4(CO)13Al(THF)3Co3(CO)10

Autor: Jörg J. Schneider, Carl Krüger, Uwe Denninger

Publikováno v: Zeitschrift für Naturforschung B. 49:1549-1553

The reaction of NaCo(CO)4 with AlCl3 in benzene has been studied. Main product of the reaction is Co4(CO)12. However, fractional crystallization of the crude reaction mixture gives small amounts of black crystals of the cobalt cluster Co4(CO)13Al(THF

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ca79fec27126eab2c9ac7223120f0e34
https://doi.org/10.1515/znb-1994-1116

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Transition metal complexes VII. [(η5-Cp)Ni(PEt3)]2, a dinuclear organometallic complex with an unbridged NiNi bond; structure and heteronuclear complexes thereof

Autor: Carl Krüger, Jörg J. Schneider, Uwe Denninger, Günther Wilke, Richard Goddard

Publikováno v: Inorganica Chimica Acta. 213:129-140

[(η5-Cp)Ni(PEt3)]2 (1) has been synthesized by reacting (η5-Cp)Ni(PEt3)Cl with activated magnesium. 1 contains an unbridged nickelnickel bond. Reaction of 1 with elemental sulfur yields the clusters [(η5-Cp)2(PEt3)2(μ3- S)Ni3] (2) and [(η5-Cp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c49aa1bab1eab189b0ba95121102ba41
https://doi.org/10.1016/s0020-1693(00)83823-2

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ChemInform Abstract: Central and Lateral Bicyclo(1.1.0)butane Bond Cleavage with Subsequent Wagner-Meerwein Rearrangements or Carbene Formation in the 185-nm Photolysis of Tricyclo(3.1.0.02,6)hexane, Tricyclo(4.1.0.02,7)heptane, and Tricyclo(5.1.0.02,8)oc

Autor: Uwe Denninger, Christine Alt, Max Braun, Gerald Zang, Waldemar Adam

Publikováno v: ChemInform. 22

From the deuterium-labeling studies, it is concluded that, in the case of the tricyclooctane, the central bicyclobutane bonds cleave in the primary step to give radical cationic or zwitterionic species that undergo a Wagner-Meerwein rearrangement. Al

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::47abe0955e0e3c22b2e0905ce996a61d
https://doi.org/10.1002/chin.199136109

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ChemInform Abstract: Comparative Study of the Pyrolysis, Photoinduced Electron Transfer ( PET), and Laser-Jet and 185-nm Photochemistry of Alkyl-Substituted Bicyclic Azoalkanes

Autor: Herbert Platsch, Ralf Finzel, Herbert Walter, Fumio Kita, Gerald Zang, Waldemar Adam, Uwe Denninger

Publikováno v: ChemInform. 23

The gas-phase pyrolysis, photoinduced electron transfer (PET), and laser-jet and 185-nm photochemistry of 2,3-diazabicyclo[2.2.1]hept-2-ene (1a), syn-7-methyl-2,3-diazabicyclo[2.2.1]hept-2-ene (syn-1b), anti-7-methyl-2,3-diazabicyclo[2.2.1]hept-2-ene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e616c0ad2e2070520957e8b44e030bfd
https://doi.org/10.1002/chin.199241049

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