THE CRYSTAL AND MOLECULAR STRUCTURE OF THE 1:1 COMPLEX FORMED BETWEEN 4-PHENYLPYRIDINE-1-OXIDE AND COPPER(II) CHLORIDE

Abstract The crystal structure of the binuclear complex formed between 4-phenylpyridine-1-oxide and copper(II) chloride has been determined. Single crystal X-ray counter methods were used to collect 3648 non-zero reflections. The complex crystallizes in the triclinic space group P1 with a unit cell of dimensions a = 10.069(8) A, b = 12.857 (5) A, c = 10.143 (5) A, α = 106°10(5)′, β = 99°45 (5)′, and γ = 97°2 (5)′. The observed and calculated densities are 1.709 and 1.704 g. cm−3, respectively. The structure was refined by least-squares methods to a conventional R factor of 0.058. The complex consists of two independent oxygen-bridged dimers of empirical formulas [(C11H9NO)CuCl2]2 and [(C11H9NO)CuCl2·H2O]2. The Cu(II) ions in one dimer are four-coordinate and contain two bridging Cu[sbnd]O bonds of 1.978 (5) and 1.986(4) A. The Cu(II) ions in the second dimer are five coordinate with a water molecule occupying the apical site of a square-based pyramidal geometry. The Cu[sbnd]O (w) bond is 2.356(7) A and th...

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