Binuclear copper complexes with CuICuI and Cu+1.5Cu+1.5 core structures formed in the reactions of 3‑(2‑methylbutyl)‑5‑pyridylmethylene‑2‑thiohydantoin with copper(II) acetylacetonate and copper(II) chloride

A treatment of the ligands, 3‑(2‑methylbutyl)‑5‑pyridylmethylene-substituted 2‑thio‑3,5‑dihydro‑4Н‑imidazole‑4‑one (L) with CuCl2·2H2O in MeOH/CH2Cl2 or Cu(acac)2 in MeOH/CH2Cl2 affords to binuclear complexes with the [L-H]2Cu+1.5Cu+1.5Cl or [L-H]2CuICuI composition, respectively. X-ray crystallography demonstrated close Cu-Cu interaction for the first complex and the absence of Cu Cu bonding for the second one.