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

Abstract A treatment of the ligands, 3‑(2‑methylbutyl)‑5‑pyridylmethylene-substituted 2‑thio‑3,5‑dihydro‑4 Н ‑imidazole‑4‑one (L) with CuCl 2 ·2H 2 O in MeOH/CH 2 Cl 2 or Cu(acac) 2 in MeOH/CH 2 Cl 2 affords to binuclear complexes with the [L-H] 2 Cu +1.5 Cu +1.5 Cl or [L-H] 2 Cu I Cu I 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.