SYNTHESIS AND SPECTROSCOPIC CHARACTERIZATION OF COPPER(I) AND COPPER(II) COMPLEXES WITH 1,6-BIS(2-BENZIMIDAZOLYL)-2,5-DITHIAHEXANE (BBDH). X-RAY STRUCTURE OF TRIGONAL-BIPYRAMIDAL COORDINATED (CU(BBDH)CL)CL.2C2H5OH