Kinetics and mechanism of the reaction between mercury(II) and a series of macrocyclic organochromium cations

被引：0

作者：

Butkovic, V

Bakac, A

Espenson, JH

机构：

[1] Rudjer Boskovic Inst, Zagreb 10002, Croatia

[2] Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA

[3] Iowa State Univ Sci & Technol, Dept Chem, Ames, IA 50011 USA

来源：

CROATICA CHEMICA ACTA | 2001年 / 74卷 / 03期

关键词：

alkylchromium; electrophilic substitution; mercury(II); kinetics;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Kinetic data are presented for the reaction of alkylchromium complexes (H2O)([14]aneN(4))CrR2+ ([14]aneN(4) = 1,4,8,11-tetraazacyclotetradecane) with Hg2+ via electrophilic substitution. The rate constants decrease in the order CH3 (1.1 x 10(6) mol(-1) dm(3) s(-1)) > C2H5 (7.7 x 10(2)) > C3H7 (59) > 2-C3H7 (0.12) > CH2C(CH3)(3) (0.0086). A series of meta and para substituted benzyl complexes obey a Hammett relationship with the reaction constant rho = -1.66, consistent with electrophilic substitution at alpha -carbon.

引用

页码：735 / 741

页数：7

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