Oxidatively induced one-electron reductive elimination of pentafluorophenyl from [Mo(C6F5)(CO)5]−
摘要:
The anionic molybdenum(0) complex [MO(C6F5)(CO)(5)](-) displays a one-electron oxidation by cyclic voltammetry that is only partially chemically reversible. The partial chemical reversibility is caused by a slow chemical reaction following oxidation. This reaction has been shown to be cleavage of the Mo-C6F5 bond in a one-electron reductive elimination process. Chemical oxidation by ferrocenium in the presence of nucleophiles yields known MO(CO)(5) L (L = Py, PPh3) complexes, while oxidation with tropylium traps the C6F5 radical as C7H7C6F5. NMR and mass spectrometry were used to identify the oxidation products. Simulated cyclic voltammograms have been used to estimate the rate constant for cleavage of the MO-C6F5 bond in the presence of pyridine as approximately 700 M-1 s(-1). (C) 2004 Elsevier Ltd. All rights reserved.
A new route to pentafluorophenylmolybdenum(0) carbonyl complexes. Synthesis and X-ray crystal structure of PPN[Mo(C6F5)(CO)5]
摘要:
In order to facilitate studies of the synthesis and reactivity of pentafluorophenylmolybdenum(0) carbonyl complexes, an efficient synthetic route to the pentacarbonyl complex, [Mo(C(6)F(5))(CO)(5)](-), has been sought. It has now been shown that the known organometallic compounds AgC(6)F(5) and PPN[MoCl(CO)(5)] [PPN = bis(triphenylphosphoranylidene)ammonium] react to give PPN[Mo(C(6)F(5))(CO)(5)] in high purity and good yield. This compound has been characterized by IR, NMR, elemental analysis, and X-ray crystallography. (C) 2000 Elsevier Science S.A. All rights reserved.
Oxidatively induced one-electron reductive elimination of pentafluorophenyl from [Mo(C6F5)(CO)5]−
作者:Jungsook Kim、Stephen L. Gipson
DOI:10.1016/j.poly.2004.02.022
日期:2004.5
The anionic molybdenum(0) complex [MO(C6F5)(CO)(5)](-) displays a one-electron oxidation by cyclic voltammetry that is only partially chemically reversible. The partial chemical reversibility is caused by a slow chemical reaction following oxidation. This reaction has been shown to be cleavage of the Mo-C6F5 bond in a one-electron reductive elimination process. Chemical oxidation by ferrocenium in the presence of nucleophiles yields known MO(CO)(5) L (L = Py, PPh3) complexes, while oxidation with tropylium traps the C6F5 radical as C7H7C6F5. NMR and mass spectrometry were used to identify the oxidation products. Simulated cyclic voltammograms have been used to estimate the rate constant for cleavage of the MO-C6F5 bond in the presence of pyridine as approximately 700 M-1 s(-1). (C) 2004 Elsevier Ltd. All rights reserved.
A new route to pentafluorophenylmolybdenum(0) carbonyl complexes. Synthesis and X-ray crystal structure of PPN[Mo(C6F5)(CO)5]
作者:William J Doucette、Jungsook Kim、Jason A Kautz、Stephen L Gipson
DOI:10.1016/s0020-1693(00)00094-3
日期:2000.6
In order to facilitate studies of the synthesis and reactivity of pentafluorophenylmolybdenum(0) carbonyl complexes, an efficient synthetic route to the pentacarbonyl complex, [Mo(C(6)F(5))(CO)(5)](-), has been sought. It has now been shown that the known organometallic compounds AgC(6)F(5) and PPN[MoCl(CO)(5)] [PPN = bis(triphenylphosphoranylidene)ammonium] react to give PPN[Mo(C(6)F(5))(CO)(5)] in high purity and good yield. This compound has been characterized by IR, NMR, elemental analysis, and X-ray crystallography. (C) 2000 Elsevier Science S.A. All rights reserved.