Metal Derivatives of Heterocyclic Thioamides: Synthesis and Crystal Structures of Copper Complexes with 1‐Methyl‐1,3‐imidazoline‐2‐thione and 1,3‐Imidazoline‐2‐thione

Reactions of copper(I) halides (Cl, Br, I) with 1‐methyl‐1, 3‐imidazoline‐2‐thione (mimzSH) in 1 : 2 molar ratio yielded sulfur‐bridged dinuclear [Cu 2 X 2 (μ‐S‐mimzSH) 2 (η 1 ‐S‐mimzSH) 2 ] (X = I, 1 , Br, 2 ; Cl, 3 ) complexes. Copper(I) iodide with 1,3‐imidazoline‐2‐thione (imzSH 2 ) and Ph 3 P in 1 : 1 : 1 molar ratio has also formed a sulfur‐bridged dinuclear [Cu 2 I 2 (μ‐S‐imzSH 2 ) 2 (PPh 3 ) 2 ] ( 4 ) complex. The central Cu(μ‐S) 2 Cu cores form parallelograms with unequal Cu–S bond distances {2.324(2), 2.454(3) Å} ( 1 ); {2.3118(6), 2.5098(6) Å} ( 2 ); {2.3075(4), 2.5218(4) Å} ( 3 ); {2.3711(8), 2.4473(8) Å} ( 4 ). The Cu···Cu separations, 2.759–2.877Å in complexes 1 – 3 are much shorter than 3.3446Å in complex 4 . The weak intermolecular interactions {H 2 CH···S # ( 2 ); CH···Cl # ( 3 ); NH···I # ( 4 )} between dimeric units in complexes 2 – 4 lead to the formation of linear 1D polymers.