UV photoelectron spectral and theoretical studies on tris(butadiene)-molybdenum and -tungsten
作者:Jennifer C. Green、M.Ruth Kelly、Peter D. Grebenik、Clive E. Briant、Neil A. McEvoy、D.Michael P. Mingos
DOI:10.1016/s0022-328x(00)84323-5
日期:1982.4
The UV photoelectronspectra of tris(butadiene)molybdenum and -tungsten have been recorded and assigned with the assistance of extended Hückel molecular orbital calculations. The spectra and calculations indicate substantial electron transfer from the metal to the ligand. The molecular orbital calculations have also indicated why these molecules adopt a trigonal prismatic rather than a octahedral geometry
Homoleptic Hexa and Penta Gallylene Coordinated Complexes of Molybdenum and Rhodium
作者:Timo Bollermann、Thomas Cadenbach、Christian Gemel、Kerstin Freitag、Mariusz Molon、Vanessa Gwildies、Roland A. Fischer
DOI:10.1021/ic200699f
日期:2011.6.20
result in a high coordinated homoleptic complex but instead yields [(coe)(toluene)RhGa(DDP)}(CF3SO3)] (4). The common feature of 2 and 4 in the solid state structure is the presence of short CF3SO2O···Ga contacts involving the GaCp* or rather the Ga(DDP) ligand. Compounds 1, 2, and 4 have been fully characterized by single crystal X-ray diffraction, variable temperature 1H and 13C NMR spectroscopy, IR
钼(0)和铑(I)的烯烃含有与卡宾13族金属配位体结扎器GAR(R的起始原料的反应中的Cp = *,DDP;的Cp * =五甲基环戊二烯,DDP = HC(CMeNC 6 ħ 3 -2,6 -我镨2)2)进行了研究和比较。的[沫(η治疗4丁二烯)3 ]与GACP *氢气氛下在100℃下得到的均配型,六配位,并在空间上拥挤络合物[沫(GACP *)6 ](1以良好的收率)≥50% 。化合物1表现出不寻常且高度配位的八面体[MoGa 6 ]核。同样,[Rh(GaCp *)5通过以下反应制备] [CF 3 SO 3 ](2)和[Rh(GaCp *)5 ] [BAr F ](3)(BAr F = B C 6 H 3(CF 3)2 } 4)。 GaCp *与铑(I)化合物[Rh(coe)2(CF 3 SO 3)] 2(coe =环辛烯)和随后在3的情况下进行阴离子交换。化合物2具有三角双锥体[RhGa
Twelve One-Electron Ligands Coordinating One Metal Center: Structure and Bonding of [Mo(ZnCH<sub>3</sub>)<sub>9</sub>(ZnCp*)<sub>3</sub>]
作者:Thomas Cadenbach、Timo Bollermann、Christian Gemel、Israel Fernandez、Moritz von Hopffgarten、Gernot Frenking、Roland A. Fischer
Substituted derivatives of tris(butadiene)-molybdenum and -tungsten; the molecular structures of (CH2CMeCMeCH2)3M (M = Mo, W)
作者:Borislav Bogdanović、Helmut Bönnemann、Richard Goddard、Anatolii Startsev、Julian M. Wallis
DOI:10.1016/0022-328x(86)84009-8
日期:1986.1
Tris(substituted butadiene) complexes of molybdenum and tungsten have been prepared by the reduction of the metal halides with anthracene-activated magnesium in the presence of the appropriate diene. An X-ray diffraction study has shown tris(2,3-dimethylbutadiene)molybdenum and its tungsten analogue to be isomorphous, with each diene unit displaying a long—short—long bond alternation, and having short