Synthesis and crystal structure of Cu(II) and Co(II) complexes with the 1,3-dimethylpyrazole-5-carboxylic acid ligand

ŽELJKO K. JAĆIMOVIĆ, MILICA KOSOVIĆ, SLAĐANA B. NOVAKOVIĆ, GERALD GIESTER, ANA RADOVIĆ

Abstract


In the reaction of 1,3-dimethylpyrazole-5-carboxylic acid (HL) with M(OAc)2·4H2O, (M = Cu or Co), two novel complexes were prepared, the square-planar [CuL2(H2O)2] and the octahedral [CoL2(MeOH)4]. The crystal structures were determined by single-crystal X-ray diffraction. In both complexes, the deprotonated acid displays monodentate coordination to the metal ions. According to the results of a CSD survey, this is the first structural report on the metal complexes with an N1-substituted pyrazole-5-carboxylic ligand.

Keywords


pyrazole-based ligand; transition metal complex; crystal structure



DOI: https://doi.org/10.2298/JSC140722009J

Copyright (c) 2015 Journal of the Serbian Chemical Society - J. Serb. Chem. Soc.

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