Crystal Structure of Bis -(2,2′-bipyridine-N,N′)-(dicyanamide-N)-copper(II) Tricyanomethanide. Electronic and Structural Parameters Describing the Shape of Coordination Polyhedra in Five-Coordinated Copper(II) Compounds |
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| Authors: | Ivan Poto?ňák Michal Dunaj-Jur?o Du?an Miklo? and Lothar J?ger |
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| Institution: | (1) Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, Worcester, MA, 01610, USA;(2) University Research Office, University of Idaho, Moscow, ID, 83844, USA; |
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| Abstract: | The structure of the new compound Cu(bpy)2N(CN)2]C(CN)3 (6) is compared with thestructures of six copper(II) coordination compounds with phenanthroline or bipyridine ligands and N-donor pseudohalide anions: Cu(phen)2NCS]C(CN)3 (1), Cu(bpy)2NCS]C(CN)3 (2), Cu(phen)2NCS]ONC(CN)2 (3), Cu(phen)2N(CN)2]C(CN)3 (4), Cu(bpy)2C(CN)3]C(CN)3 (5), and Cu(bpy)2NCO]C(CN)3 (7). The Cu(II) atoms in all above compounds are five-coordinated with an N-donor atom of the pseudohalide anion located in the equatorial plane of a deformed trigonal bipyramid. The shape of the coordination polyhedra and the degree of trigonal bipyramidal distortion towards a tetragonal pyramid are discussed and described using one electronic and several structural criteria which are discussed and compared. |
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