Electrochemical oxidation of [dibenzo-18-crown-6-K][Cr(CO)5F] and Cr(CO)6: characterization of [Cr(CO)6]+ and its substitution reactions with fluoride and trifluoroacetate
作者:R. N. Bagchi、A. M. Bond、R. Colton、D. L. Luscombe、J. E. Moir
DOI:10.1021/ja00272a032
日期:1986.6
Etudes de l'oxydation electrochimiquede [dibenzo-18 crown-6-K][Cr(CO) 5 F] dans du dichloromethane, de l'acetone et de l'acetonitrile, en vue d'etablir si la syntheseelectrochimique d'etats d'oxydation superieurs des complexes carbonyles fluores est possible
[dibenzo-18 Crown-6-K][Cr(CO) 5 F] dans du dichloromethane, de l'acetone et de l'acetonitrile, en vue d'etablir si la syntheseelectrochimique d' etats d'oxydation superieurs des complexes carbonyles fluores est possible
Anodic oxidation of metal carbonyls in trifluoroacetic acid; stabilities of some 17-electron cations
作者:Christopher J. Pickett、Derek Pletcher
DOI:10.1039/dt9760000636
日期:——
The electrochemical oxidation of some metal carbonyls at a Pt electrode in trifluoroacetic acid–tetrabutylammonium tetrafluoroborate (0.2 mol dm–3) is reported. It is shown that the 17-electron cations [Cr(CO)6]+, [Fe(CO)5]+, [Mn(η-C5H5)(CO)3]+ and [MnBr(CO)5]+ may be prepared form their parent 18-electron carbonyls and that each has some stability in this medium. The complex [Mn2(CO)10] undergoes
Quenching of excited uranyl ion by metal carbonyls in aprotic solvents
作者:Silvana Sostero、Orazio Traverso、Plinio Di Bernardo、Terence J. Kemp
DOI:10.1039/dt9790000658
日期:——
The nature of the quenching of the luminescent state of uranylion by a number of metal carbonyls, [M(CO)n], has been studied in aprotic solvents. Flash photolysis and e.s.r. and i.r. spectroscopy show that the quenching process takes place with concomitant formation of the paramagnetic reactive intermediate, [M(CO)n]+, and the [UO2]+ ion. The bimolecular quenching constants kQ are related to the free
在非质子传递溶剂中,已研究了由许多金属羰基[M(CO)n ]淬灭铀酰离子的发光态的性质。闪光光解法和esr和ir光谱表明,淬灭过程是伴随顺磁性反应性中间体[M(CO)n ] +和[UO 2 ] +离子的形成而发生的。双分子猝灭常数k Q与电子转移过程中的自由能变化有关。因此,log k Q的值与[M(CO)n]。初级光产物随后参与不可逆的氧化还原过程,形成U IV和M z +离子。