THE PREPARATION AND X-RAY CRYSTAL-STRUCTURE OF [CO(PH2SNH)(6)]CL-2, AHOMOLEPTIC SULFIMIDE COMPLEX EXHIBITING COOPERATIVE, DIRECTED HYDROGEN-BONDS BETWEEN CATIONS AND ANIONS

At ambient temperatures, in CH3CN, a six-fold excess of S,S-diphenylsu lfimide (1) reacts with anhydrous CoCl2 to give [Co(Ph2SNH)(6)] Cl-2 ( 2), the first example of a homoleptic sulfimide complex. In addition t o the expected octahedral coordination geometry, X-ray crystallography reveals significant directed hydrogen bonding from the N-H groups on the ligands to the chlorides. Thus the three N-H bonds on opposite coo rdination faces act as cooperative hydrogen-bonding pockets for the ch loride counterions. (C) 1998 Elsevier Science S.A. All rights reserved .