REACTIONS OF THIOL-FUNCTIONALIZED SILSESQUIOXANES WITH METAL-CARBONYLCLUSTERS - SYNTHESES AND CHARACTERIZATION OF SI8O12(PR-N)(7)((MU(2)-SC3H6)M-3(MU-H)(CO)(10))](M = RU, OS PR-N = C5H7) 8O12(PR-N)(6)((MU(2)-SC3H6)RU-3(MU-H)(CO)(10))(2)] AND 3H6SH)(X)((MU(2)-SC3H6)RU-3(MU-H)(CO)(10))(8-X)](X = 6, 0)

The thiol-functionalised silsesquioxanes, [Si8O12(Pr-n)(7)(C3H6SH)], 1 , and [Si8O12(Pr-n)(6){o-(C3H6SK)(2)}], 2) (Pr-n = C3H7) readily react with the activated metal clusters [M-3(CO)(10)(NCMe)(2)] (M = Ru, Os) to form cluster-substituted silsesquioxanes. The compounds [Si8O12(Pr -n)(7){(mu(2)-SC3H6)M-3(mu-H)(CO)(10))] (M = Ru, 4; M = Os, 5) and 12( Pr-n)(6)(o-(mu(2)-SC3H6)Ru-3(mu-H)(CO)(10))(2)] 6 have been prepared a nd characterized. The octa-substituted silsesquioxane, [Si8O12(C3H6SH) (8)], 3, may be partially or completely substituted at its thiol funct ionalities depending on the reaction stoichiometry employed; 2(C3H6SH) (6){(mu(2)-SC3H6)Ru-3(mu-H)(CO)(10)}(2)], 7, and [Si8O12{(mu(2)-SC3H6) Ru-3(mu-H)(CO)(10)}(8)], 8, have been prepared. (C) 1998 Elsevier Scie nce S.A.