Nitrogen- and carbon-based isomerism in the copper(II) complexes of 6,13-dimethyl-1,4,8,11-tetraazacyclotetradecane-6,13-diamine

被引：26
|
作者：
Bernhardt, PV
Jones, LA
Sharpe, PC
机构：
[1] Department of Chemistry, University of Queensland, Brisbane
来源：
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 1997年 / 07期
关键词：
ARM MACROCYCLE 6,13-DIMETHYL-1,4,8,11-TETRAAZACYCLOTETRADECANE-6,13-DIAMINE; CRYSTAL-STRUCTURE; MACROBICYCLIC HEXAAMINES; METAL-IONS; NICKEL(II); COORDINATION; TRANS-6,13-DIAMINO-6,13-DIMETHYL-1,4,8,11-TETRAAZACYCLOTETRADECANE; COBALT(III); REDUCTION;
D O I：
10.1039/a606476k
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A number of N- and C-based diastereomeric copper(II) complexes of the pendant-arm macrocyclic hexaamines trans- and cis-6,13-dimethyl-1,4,8,11-tetraazacyclotetradecane-6,13-diamine (L-1 and L-2) have been isolated and characterised. The crystal structures of the complexes RRSS-[CuL1(OH2)(2)][ClO4](2), SSRR-[Cu(H2L1)(OClO3)(2)]-[ClO4](2) . 2H(2)O RSRS-[CuL1(OClO3)]ClO4, RSRS-[CuL2(OClO3)]ClO4 and RRSS-[Cu(H2L2)(OClO3)(2)][ClO4](2) have been determined. Some unusual structural and spectroscopic variations are found across this series of diastereomers. The protonation constants of the pendant primary amines are dependent on the relative dispositions of the adjacent macrocyclic secondary amine H atoms, which is indicative of intramolecular hydrogen-bonding interactions.
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页码：1169 / 1175
页数：7
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