SYNTHESIS AND STRUCTURE OF [IMNCS(2)K] (IMN = 1,3-DIMETHYLIMIDAZOLINE-2-IMINO) - A NOVEL POTASSIUM DITHIOCARBIMINATE

The reaction of the 2-iminoimidazoline 4 with KMe gives the potassium imidate 7 from which the potassium 1,1-dithiolate 8 is obtained in alm ost quantitative yield. Crystals of C6H8N3S2K . 1/6 CH3CN (8.1/6 CH3CN ) are triclinic, space group P (1) over bar, Z = 6, a = 10.958(4), b = 13.597(8), c = 13.622(9) Angstrom, alpha = 113.003, beta = 105.53(3), gamma = 105.6%(3)degrees, V = 1636.90 Angstrom(3). The structure cons ists of a complicated 3-di-mensional framework in which the K-2 units bridged by the four sulfur atoms of two thiolate ligands are connected by nitrogen and sulfur bridges.