cis-bis(2-amino-1,3-benzothiazole-N-3)bis-(formato-O,O ')copper(II)

The title complex, cis-bis(2-amino-1 3-benzothiazole-N-3)bis(formato-O,O')c opper(II), [Cu(CHO2)(2)(C7H6N2S)(2)], displays C-2 symmetry with the Cu ato m adopting a distorted octahedral (4 + 2) coordination. The four closest do nor atoms are two N atoms of 2-aminobenzothiazole and two O atoms of the ca rboxylate groups. They form a distorted square-planar arrangement, with Cu- N and Cu-O distances of 1.991(2) and 1.993(2)Angstrom, respectively. Two lo nger out-of-plane Cu-O bonds [2.538 (2) Angstrom] from the remaining O atom s of the formate groups complete the strongly distorted square-bipyramidal coordination of the Cu atom. The H atoms of each amino group of the 2-amino benzothiazole molecules form intra- and intermolecular hydrogen bonds with O atoms from the carboxylate groups. Intermolecular S ... S secondary bondi ng of 3.502(2)Angstrom is observed between neighbouring chains of molecules connected by hydrogen bonds.