Mitigating repulsions in close quarters: Copper tells us how!

被引：9

作者：

Ahuja, Ritu ^{[1
]}

Nethaji, M. ^{[1
]}

Samuelson, A. G. ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Inorgan & Phys Chem, Bangalore 560012, Karnataka, India

来源：

POLYHEDRON | 2007年 / 26卷 / 01期

关键词：

copper; Cambridge Structural Database (CSD) analysis; diphosphinoamine; metal-metal interactions; short bite ligand; unsymmetrical coordination;

D O I：

10.1016/j.poly.2006.08.004

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Four copper(l) complexes of short bite ligands, bis(diphenylphosphino)amine (dppa) and bis(diphenylphosphino)isopropylamine (dppipa) were synthesized from appropriate precursors. All complexes were characterized by single crystal X-ray crystallography and spectroscopic techniques. In each of these complexes, two filled shell cations are forced into close proximity (approximate to 2.7-2.8 angstrom). With no strong pi acid ligands to siphon electron density from the filled d shell, the unavoidable repulsive d(10)-d(10) interaction is mitigated when an unsymmetrical coordination environment around the copper atoms exists. The coordinatively saturated copper ion functions as a donor to the coordinatively unsaturated copper. A Cambridge Structural Database (CSD) search reveals the greater propensity of clusters with short contacts to adopt unsymmetrical coordination. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：142 / 148

页数：7

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