silver nitrate in water byproducts: AgCl; Pt(cis-dichloro(1,2-diaminocyclohexane)platinum(II)hydrate was reacted,as a suspn. in water, with AgNO3; the bulk of the AgCl ppt. was removedby centrifugation; residual traces were removed by filtration; the filtrate was reacted with KBr; ppt. was sepd. by filtration and recrystd. by pptn. from an acetone soln. by vapour diffusion of water; elem. anal.;