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catena-Poly[[(3-methylpyridine)copper(I)]-μ-cyanido-copper(I)-μ-cyanido]

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Author(s): Jin-Biao Cai | Ting-Ting Chen | Ze-Ying Xie | Hong Deng

Journal: Acta Crystallographica Section E
ISSN 1600-5368

Volume: 67;
Issue: 8;
Start page: m1136;
Date: 2011;
Original page

ABSTRACT
In the title complex, [Cu2(CN)2(C6H7N)]n, there are two copper atoms with different coordination environments. One Cu atom (Cu1) is linked to the two cyanide ligands, one N atom from a pyridine ring while the other (Cu2) is coordinated by the two cyanide ligands in a slightly distorted tetrahedral geometry and linked to Cu1, forming a triangular coordination environment. The Cu atoms are bridged by bidentate cyanide ligands, forming an infinite Cu–CN chain. One cyanide ligand is equally disordered over two sets of sites, exchanging C and N atoms coordinated to both metal atoms. However, one cyanide group is not disordered and it coordinates to Cu1 via the N atom whereas its C-atom counterpart coordinates Cu2. The 3-methylpyridine (3MP) ligand coordinates through the N atom to Cu1 as a terminal ligand, which originates from decyanation of 3-pyridylacetonitrile under hydrothermal conditions. Adjacent Cu–CN chains are interconnected through Cu...Cu interactions [2.8364 (10) Å], forming a three-dimensional framework.
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