Reduction–oxidation properties of organotransition-metal complexes. Part 2. The one-electron oxidation of tetracarbonyl(η-cyclopenta-dienyl) vanadium derivatives
作者:Neil G. Connelly、Maureen D. Kitchen
DOI:10.1039/dt9760002165
日期:——
[V(η-C5H5)(CO)2(dppe)]+(4) respectively. For L = PPh3,PMePh2,PEt3,and P(NMe2)3, andfor(2), this processis reversible, but for L = P(OPh)3 or P[(OCH2)2-CMe] it is irreversible at all the scan rates used. Complexes (3; L = PPh3 or PMePh2) and (4) may be generated in CH2CL2 by treating (1) or (2) with [p-FC6H4N2][BF4]. and may be isolated, as their [PF6]– salts, by treating (1; L = PPh3) or (2) with [NO][PF6]
在CH循环伏安研究2氯2和MeCN表明[V(η-C 5 H ^ 5)(CO)3 L] 1; L = PPH 3,PMePh 2,PET 3,P(NME 2)3,P [(OCH 2)3 CME]和P(OPH)3 }和[V(η-C 5 H ^ 5)(CO)2(DPPE)](2; DPPE =苯基2 PCH 2 CH 3 PPH 2)在铂电极为[V(η-C被氧化5 ħ 5)(CO)3L] +(3)和[V(η-C 5 H ^ 5)(CO)2(DPPE)] +分别(4)。对于L = PPH 3,PMePh 2,PET 3,和P(NME 2)3,andfor(2),此processis可逆的,但对于L = P(OPH)3或P [(OCH 2)2 -CMe]它在所有使用的扫描速率下都是不可逆的。通过用[ p -FC 6 H 4 N 2 ] [BF]处理(1)或(2),可以在CH 2 CL 2中生成络合物(3;