Transition Metal Chemistry

, Volume 10, Issue 1, pp 5–8 | Cite as

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

  • M. Adediran Mesubi
  • F. Okwudilichukwu Anumba
Full Papers


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 4 2− 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 4 2− yields a stable neutral solid compound, [Cu(HCtpz)(C2O4)].


Copper Physical Chemistry Methane Aqueous Solution Inorganic Chemistry 
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Copyright information

© VCH Verlagsgesellschaft mbH 1985

Authors and Affiliations

  • M. Adediran Mesubi
    • 1
  • F. Okwudilichukwu Anumba
    • 1
  1. 1.Department of ChemistryUniversity of IlorinIlorinNigeria

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