Heterometallic complexes of trivalent copper dithiocarbamate with indium and gallium chloride

Heterometallic Cu-In and Cu-Ga complex salts, [Cu(III)(dedtc)2][In(III)Cl4] (1) and [Cu(III)(dedtc)2][Ga(III) Cl4] (2) (dedtc =- S2CNEt2, diethyldithiocarbamate), were synthesized from Cu(II)(dedtc)2, In(III)Cl3, and Ga (III)I3 in dichloromethane and acetone solvents. The trivalent copper complex [Cu(III)(dedtc)2]+ was produced by an oxidation reaction of Cu(II)(dedtc)2 and [M(III)Cl4]- (M = In, Ga) which exhibit a blue-shift of the C-N vibrational mode resulting from the high oxidation state of copper(III) cations. In the Cu-Ga complex salt (2), [Ga(III)Cl4]- was obtained by a halogen exchange reaction between Ga(III)I3 and CH2Cl2. Cu-In and Cu-Ga complex single crystals were grown in benzene and dichloromethane media. Their crystal structures were confirmed that [Cu(III)(dedtc)2]+ units formed distorted octahedral structures with infinite polymeric Cu-S chains surrounded by dimeric [M(III)Cl4]- and benzene. The crystal structures of 1 and 2 included benzene as a guest molecule due to strong noncovalent interactions of metal chloride anions.

Automated summary

Heterometallic Cu-In and Cu-Ga complex salts, [Cu(III)(dedtc)2][In(III)Cl4] and [Cu(III)(dedtc)2][Ga(III)Cl4], were synthesized through oxidation reactions of Cu(II)(dedtc)2, In(III)Cl3, and Ga(III)I3. The crystal structures of Cu-In and Cu-Ga complexes were confirmed and exhibited distorted octahedral structures with Cu-S chains surrounded by dimeric [M(III)Cl4]- and benzene.