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Coordination chemistry of poly(1-pyrazolyl)alkanes, part IV. Copper(II) complexes of bis- and tris-(1-pyrazolyl)methane

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Summary

The reactions of some copper(II) salts with bis(1-pyrazolyl)methane, H2Cbpz, bis(3,5-dimethylpyrazolyl)methane, H2Cbdmpz, and tris(1-pyrazolyl)methane, HCtpz give the following solid complexes: CuLX2 · nH2O (L=H2Cbpz, H2Cbdmpz or HCtpz; X=Cl−, Br−, NO −3 , OAc−, or 1/2 SO 2−4 and n=0, 1, 3 or 5) and CuL2X2 · nH2O (L=HCtpz, X= C−, Br−, NO −3 or ClO −4 and n=0 or 2). The complexes have been characterised by elemental analysis, visible and i.r. spectral measurements.

The reactions of Cu(HCtpz)X2 · nH2O (X=Cl− or Br−) with acetylacetonate (acac−), dialkyldithiocarbamate (S2CNMe −2 , S2CNEt −2 ) or poly(1-pyrazolyl)borate (H2Bbpz−, HBtpz−) in aqueous solutions lead to the displacement of HCtpz and the subsequent formation of neutral [Cu(acac)2], [Cu(S2CNR2)2], [Cu(H2Bbpz)2] and Cu(HBtpz)2 while the reaction with oxalate ion, C2O 2−4 yields a stable neutral solid compound, [Cu(HCtpz)(C2O4)].

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Authors and Affiliations

  1. Department of Chemistry, University of Ilorin, P.M.B., 1515, Ilorin, Nigeria

    M. Adediran Mesubi & F. Okwudilichukwu Anumba

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  1. M. Adediran Mesubi
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  2. F. Okwudilichukwu Anumba
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Adediran Mesubi, M., Okwudilichukwu Anumba, F. Coordination chemistry of poly(1-pyrazolyl)alkanes, part IV. Copper(II) complexes of bis- and tris-(1-pyrazolyl)methane. Transition Met Chem 10, 5–8 (1985). https://doi.org/10.1007/BF00620621

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  • DOI: https://doi.org/10.1007/BF00620621

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