Methyl transfer reactivity of five-coordinate CH3CoIIIPc

被引：17
作者：
Galezowski, W [1 ]
机构：
[1] Adam Mickiewicz Univ, Dept Chem, PL-60780 Poznan, Poland
来源：
INORGANIC CHEMISTRY | 2005年 / 44卷 / 05期
关键词：
D O I：
10.1021/ic048698v
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
(CH3COPC)-P-III (PC = dianion of phthalocyanine) has been characterized by equilibrium studies of its trans axial ligation and cyclic voltammetry as a relatively "electron poor" model of methylcobalamin, which in noncoordinating solvents persists as a five-coordinate complex. Axial base (N-donors, PBu3, SCN-, weakly binding O-donors) inhibition of methyl transfer from (CH3COPc)-Pc-III shows that the reaction proceeds via the reactive five-coordinate species, even in coordinating solvents. The virtual inactivity of six-coordinate (CH3COPc)-Pc-III(L) complexes provides a reference point for important biological processes.
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页码：1530 / 1546
页数：17
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