Diammine cobalt compounds

The active C(j-bromoamminebis(ethylenediamine)cobalt(III) salts, like the racemic compounds, are similar in properties to the corresponding cis-chloroamminebis(ethylenediamine)cobalt(III) salts, but they have been less extensively investigated. They are quite stable, and their solutions do not race-mize on standing at room temperature or even on heating to incipient boil-ing.i They can be converted from one salt to another without loss of optical activity. Treatment of the active bromide or(+)-a-bromocamphor- r-sulfonate with liquid ammonia yields the corresponding optically active cw-diammine-bis(ethylenediamine)cobalt(III) salts. A partial resolution of the racemic bromide into optical isomers on ( +)- and ( — )-quartz has been reported.The specific magnetic susceptibility has been found to be 3.49 X... 

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