Author/Authors :
Vynohradov, Oleksandr S. Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Pavlenko, Vadim A. Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Naumova, Dina D. Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Partsevska, Sofiia V. Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Shova, Sergiu Department of Chemistry - Taras Shevchenko National University of Kyiv, Ukraine , Shova, Sergiu Poni Petru Institute of Macromolecular Chemistry, Romania , Safarmamadov, Safarmamad M. Department of Chemistry - Tajik National University, Tajikistan
Abstract :
In the title bicyclic trinuclear pyrazolate aminoalcohol complex, [Cu3(C5H7N2)2(C6H14NO3)2]Br2·1.5H2O, the central Cu atom lies on a center of symmetry and is involved in the formation of two five-membered rings. It has a coordination number of 4, is in a distorted tetrahedral environment and is connected by the bridging oxygen atoms of the deprotonated OH groups of different aminoalcohol groups, and by the N atoms of deprotonated dimethylpyrazole ligands. The peripheral Cu atom is in a trigonal–bipyramidal coordination environment formed by the nitrogen atom of the deprotonated bridging dimethylpyrazole unit, the bridging oxygen atom of the deprotonated OH group, two oxygen atoms of the protonated hydroxy groups and the nitrogen atom of triethanolamine. One of the C atoms and the Br− anion were found to be disordered over two positions with occupancy factors of 0.808 (9):0.192 (9) and 0.922 (3):0.078 (3), respectively.
Keywords :
copper complexes , aminoalcohol ligand , X-ray crystallography , triethanolamine , pyrazole , crystal structure
