SYNTHESIS AND MOLECULAR-STRUCTURE OF ZWITTERIONIC COMPLEXES OF PHENOTHIAZINE-5-OXIDE DERIVATIVES COORDINATED WITH COBALT(II) AND COPPER(II)IONS

The synthesis and characterization of Co(II)Cl2 and Cu(II)Cl2 complexe s with ro-10-(3-dimethylaminopropyl)phenothiazine-5-oxide hydrochlorid e (cpz(O)HCl) and three related compounds are described. The crystal s tructures of the complexes [CoCl3cpz(O)H] (1) and [CuCl3 cpz(O)H] (2) were determined by single-crystal X-ray diffraction analyses. 1 crysta llizes in the monoclinic space group P2(1)/c with a = 8.150(1), b = 17 .763(2), c = 14.630(2) angstrom, beta = 103.93(1)degrees, V = 2055.8(3 ) angstrom3, and Z = 4. 2 crystallizes in the monoclinic space group P 2(1)/c with a = 8.141(1), b = 17.175(4), c = 14.810(3) angstrom, beta = 103.27(1)degrees, V = 2015.5(7) angstrom3, and Z = 4. The metal atom s in both complexes are coordinated in a tetrahedral geometry and the two complexes are arranged in a head-to-tail manner to form a dimer.