CHROMIUM-CENTERED IMIDO GROUP-TRANSFER

被引：16
|
作者：
LEUNG, WH
WU, MC
LAU, TC
WONG, WT
机构：
[1] CITY UNIV HONG KONG,DEPT BIOL & CHEM,KOWLOON,HONG KONG
[2] UNIV HONG KONG,DEPT CHEM,HONG KONG,HONG KONG
来源：
INORGANIC CHEMISTRY | 1995年 / 34卷 / 16期
关键词：
D O I：
10.1021/ic00120a038
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Treatment of [Cr(N-t-Bu)(2)Cl-2] with terpy and AgBF4 have structurally characterized [Cr(N-t-Bu)(2)(terpy)](BF4)(2) (1) The imido transfer reaction of 1 with excess PMe(3) follows biphasic kinetics with rate expressions rate = k(2) [Cr][PMe(3)] and rate = k(3)[Cr][PMe(3)](2) for the first and second steps, respectively. At 25.0 degrees C in CH3CN k(2) = 0.48 +/- 0.1 M(-1) s(-1) and k(3) = 1.44 +/- 0.16 M(-2) S-1. The Cr(VI)/Cr(V) formal potential for 1 in CH3CN was determined to be -0.74V vs Cp(2)Fe(+10).
引用
收藏
页码：4271 / 4274
页数：4
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