Treatment of the coordinatively unsaturated osmium complex Os(SnMe
3)Cl(CO)(PPh
3)
2with sodium dimethyldithiocarbamate gives the coordinatively saturated complex Os(SnMe
3)(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
1). Complex
1 reacts with excess SnI
4 to give Os(SnMeI
2)(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
3) in high yield. A redistribution reaction of
3 with anequimolar amount of
1 provides Os(SnMe
2I)(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
2). The last remainingmethyl group bonded to tin in
3 is removed by treatment with a slight excess of I
2, givingthe triiodostannyl complex Os(SnI
3)(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
4). Both
3 and
4 have beenfurther derivatized by replacement of the halide groups on tin. Treatment of
3 withpyridinium tribromide gives Os(SnMeBr
2)(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
5). Treatment of
3 withcatechol provides Os(SnMe[1,2-O
2C
6H
4])(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
6), while the similarreaction with 1,2-ethanedithiol gives Os(SnMe[1,2-S
2C
2H
4])(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
7).Complex
4 undergoes reaction with an excess of KOH to give the trihydroxystannyl complexOs(Sn[OH]
3)(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
8). Treatment of
4 with triethanolamine gives Os(Sn[OCH
2CH
2]
3N)(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
9), while reaction with nitrilotriacetic acid givesthe metal-substituted stannatranone Os(Sn[OC(O)CH
2]
3N)(
2-S
2CNMe
2)(CO)(PPh
3)
2 (
10). Thecrystal structures of
1,
4,
5,
7, and
10 have been determined.