FORMATION OF THE INTERMEDIATE, AQUOHYDROXOBIS (ETHYLENEDIAMINE)COBALT(III) COMPLEX, IN THE PREPARATION OF CIS-BROMOAMMINEBIS (ETHYLENEDIAMINE)COBALT(III) BROMIDE BY THE REACTION OF BIS[BIS(ETHYLENEDIAMINE)COBALT(III)-μ-DIHYDROXO]DIAQUOCOBALT(II) SULFATE WITH AMMONIUM BROMIDE IN WATER