Tetragonal-pyramidal complex of copper nitrate with 2-Amino-5-ethyl-1,3,4-thiadiazole

A complex compound of Cu(II) nitrate with 2-amino-5-ethyl-1,3,4-thiadiazole was synthesized and its structure was studied by the methods of IR spectroscopy and X-ray crystal analysis. The complex has the composition Cu(NO3)2(2-amino-5-ethyl-1,3,4-thiadiazole)4 with four molecules of the heterocyclic ligand (coordination through nitrogen atoms of thiadiazole rings) and one of nitrate ions (the other is replaced in the second sphere) entering into the coordination sphere of the complex polyhedron. The internal coordination sphere of the complex has the form of a tetragonal pyramid with 2-amino-5-ethyl-1,3,4-thiadiazole ligands in the sites of its base and the oxygen atom of the nitrate ion in a slightly distorted vertex of the pyramid.

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