Synthesis and X-ray crystal structure of the 3,5-dimethylpyrazolato copper(I) trimer, [Cu(pz″)]3
- 1 August 1990
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 68 (8) , 1444-1449
- https://doi.org/10.1139/v90-221
Abstract
A moderately high-yield, high temperature synthesis of the title compound is reported. Crystals of tris[(3,5-dimethylpyrazolato-N1,N2)copper(I)] are triclinic, a = 12.360(4), b = 14.637(4), c = 12.358(4) Å, α = 105.29(2), β = 119.83(2), γ = 93.99(3)°, Z = 4 (trimers, two per asymmetric unit), space group . The structure was solved by heavy atom methods and was refined by full-matrix least-squares procedures to R = 0.034 and Rw = 0.038 for 3877 reflections with I ≥ 3σ(I). The structure consists of trimeric molecules with an unusually short average Cu—N distance of 1.852 Å. The central Cu3N6 nine-membered rings are planar to within 0.07 Å. The trimer units are linked in pairs about centres of symmetry by weak interactions averaging 2.946 Å. Keywords: pyrazolato copper (I) timer, copper (I) pyrazolate.Keywords
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