A variety of heterobimetallic adducts formed between tris(dithiocarbarnato)cobalt(lII) complexes and copper(1) halides have been recorded. In the present paper, reports of the synthesis and structure determinations of [Rh {S2CN(CH2)4}3]3Cul (1), [Cr(S2CNEt2)3]. [Cr(S2CNEt2)3] and [Cr{S2CN(CH2)4}3].3Cul.MeCN (3), similar to cobalt(llI) counterparts, suggest that, in principle, the previously described chemistry of the cobalt(III) systems may be extended to analogous systems for dithiocarbamates of any non-labile trivalent metal. The novel Cu3I3 ring of (3) is disordered between possible boat forms.