Tetrakis[{μ3-ethoxy(N-methylimino)methanethiolato}copper(I)]

Tetrakis[μ 3 -ethoxy(N-methylimino)methane-thiolato]-1κN,2:4κ 2 ;2κN,1:3κ 2 S;3κN,1:4κ 2 S;4κN,2:3κ 2 S-tetracopper, [Cu 2 (C 4 H 8 NOS) 2 ] 2 , contains a tetrahedral Cu 4 core surrounded by four effectively tridentate ethoxy(N-methylimino)methanethiolato (or O-ethyl N-methylcarbonimidothioato) ligands, CH 3 N=C(OC 2 H 5 )S - . Each Cu atom is coordinated by an N atom and two S atoms in a trigonal planar environment. There are two kinds of Cu I -Cu I distances (average 2.616 and 2.845A), resulting in a butterfly structure for the Cu 4 core