Mitigating repulsions in close quarters: Copper tells us how!

Ahuja, Ritu and Nethaji, M and Samuelson, AG (2007) Mitigating repulsions in close quarters: Copper tells us how! In: Polyhedron, 26 (1). pp. 142-148.

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Abstract

Four copper(I) 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 (\approx 2.7–2.8\AA). With no strong p 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.

Item Type:	Journal Article
Publication:	Polyhedron
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	Copper;Cambridge Structural Database (CSD) analysis;Diphosphinoamine;Metal–metal interactions;Short bite ligand;Unsymmetrical coordination
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	27 Mar 2007
Last Modified:	19 Sep 2010 04:36
URI:	http://eprints.iisc.ac.in/id/eprint/10227

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