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

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 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)].

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Correspondence to M. Adediran Mesubi.

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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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Keywords

  • Copper
  • Physical Chemistry
  • Methane
  • Aqueous Solution
  • Inorganic Chemistry