歧化反应一般: (RCp) 2 Mo 2 (CO) 6 +2Lην(RCp)Mo(CO) 3 − +(RCp)Mo(CO) 2 L 2 + +CO (R=M ou CH 3 )。Effet important des proprietes du coordinat L sur la dismutation du complexe dinucleaire。机制。幽灵红外线
Sonochemistry and sonocatalysis of metal carbonyls
作者:Kenneth S. Suslick、James W. Goodale、Paul F. Schubert、Hau H. Wang
DOI:10.1021/ja00356a014
日期:1983.9
67 The labeled precursor utilized in the present investigation, 1-deoxy-D-three [ l-2H3,5-2Hl]pentulose (6) was synthesized from 2,4-O-benzylidene-~-[4-~H~] threose, which is available from D[ l-2Hl]arabinitol by standard Reaction of the threose derivative with trideuteriomethylmagnesium iodide in ether then gave a mixture of protected, epimeric pentane tetrols, which was oxidized by the stannylene
然后提取硫胺素,并用亚硫酸氢盐裂解,以通常的方式得到 HET。将其转化为三氟乙酸酯用于 MS 检查。
Transition-metal chemical shifts in complexes of molybdenum(0) and tungsten(0)
作者:Geoffrey T. Andrews、Ian J. Colquhoun、William McFarlane、Samuel O. Grim
DOI:10.1039/dt9820002353
日期:——
methods respectively for 65 related derivatives of [Mo(CO)6] and [W(CO)6] with (mainly) phosphorus ligands. The chemical shifts of the two nuclei are remarkably parallel, those for l83W being ca. 1.7 times more sensitive to changes in chemical environment than those for 95Mo. The chemical shifts are temperature-dependent, and trends in them can be largely accounted for by variations in the mean electronic
Binuclear Carbyne and Ketenyl Derivatives of the Alkyl-Bridged Complexes [Mo<sub>2</sub>(η<sup>5</sup>-C<sub>5</sub>H<sub>5</sub>)<sub>2</sub>(μ-CH<sub>2</sub>R)(μ-PCy<sub>2</sub>)(CO)<sub>2</sub>] (R = H, Ph)
作者:M. Angeles Alvarez、M. Esther García、Daniel García-Vivó、M. Eugenia Martínez、Miguel A. Ruiz
DOI:10.1021/om1011819
日期:2011.4.25
The 30-electron benzylidyne complex [Mo2Cp2(mu-CPh)(mu-PCy2)(mu-CO)] (Cp = eta(5)-C5H5) could be conveniently prepared upon photolysis of the benzyl-bridged complex [Mo2Cp2(mu-CH2Ph)(mu-PCy2)(CO)(2)]. It reacted with CO to give the ketenyl complex [Mo2Cp2mu-C(Ph)CO}(mu-PCy2)(CO)(2)] (2.6101(2) angstrom), which in turn could be selectively decarbonylated at 353 K to give the 32-electron benzylidyne derivative [Mo2Cp2(mu-CPh)(mu-PCy2)(CO)(2)] (Mo-Mo = 2.666(1) angstrom). Related methylidyne complexes could be obtained from the methyl-bridged complex [Mo2Cp2(mu-CH3)(mu-PCy2)(CO)(2)] via its trinuclear derivative [Mo3Cp2(mu(3)-CH)(mu-PCy2)(CO)(7)] Thus, the carbonylation of the latter cluster gave the ketenyl complex [Mo2Cp2mu-C(H)CO}(mu-PCy2)(CO)(2)], whereas its reaction with P(OMe)(3) gave the substituted cluster [Mo3Cp2(mu(3)-CH)(mu-PCy2)(CO)(6)P(OMe)(3)}], which in turn could be thermally degraded to give selectively the 30-electron methylidyne derivative [Mo2Cp2(mu-CH)(mu-PCy2)(mu-CO)] (Mo-Mo = 2.467(1) angstrom). DFT calculations on the phenylketenyl complex revealed that the metal ligand interaction is intermediate between the extreme descriptions represented by the acylium (3-electron donor) and ketenyl (1-electron donor) canonical forms of this ligand.
Synthesis of cationic allyl carbonyl complexes of group vi metals and iron
作者:V. V. Krivykh、O. V. Gusev、P. V. Petrovskii、M. I. Rybinskaya
DOI:10.1007/bf00956614
日期:1986.6
Synthesis of cationic allyl- and dienecarbonyl complexes of group VI-VIII metals in the presence of strong protonic acid