Syntheses, reactions, and structures of osmium(II) stannyl complexes with the simple stannyl ligands-SnH3, -SnH2Me, and -SnHMe2

摘要

Reaction between Os(SnI3)(kappa(2)-S2CNMe2)(CO)(PPh3)(2) and NaBH4 produces the unusual, air-stable, trihydridostannyl complex, Os(SnH3)(kappa(2)-S2CNMe2)(CO)(PPh3)(2) (1), which has been fully characterised including by X-ray crystal structure determination. Similarly, reaction between Os(SnI2Me)(kappa(2)-S2CNMe2)(CO)(PPh3)(2) or Os(SnClMe2)(kappa(2)-S2CNMe2)(CO)(PPh3)(2) and NaBH4 produces the dihydridostannyl complex, Os(SnH2Me)(kappa(2)-S2CNMe2)(CO)(PPh3)(2) (4) or the monohydridostannyl complex, Os(SnHMe2)-(kappa(2)-S2CNMe2)(CO)(PPh3)(2) (6), respectively. The Sn-H bonds in these complexes are reactive towards acids and in selected reactions complexes 1 and 4 with aqueous HF give Os(SnF3)(kappa(2)-S2CNMe2)(CO)(PPh3)(2) (3) and Os(SnF2Me)(kappa(2)-S2CNMe2)(CO)(PPh3)(2) (5), respectively, and complex 6 with aqueous HCl gives Os(SnClMe2)(kappa(2)-S2CNMe2)(CO)(PPh3)(2). The trihydridostannyl complex 1 reacts with chloroform to form the trichlorostannyl complex, Os(SnCl3)(kappa(2)-S2CNMe2)(CO)(PPh3)(2) (2). The crystal structures of 1-3, 5, and 6 have been determined. (c) 2006 Elsevier B.V. All rights reserved.