Synthesis and characterization of osmium-containing silsesquioxanes: High-yield routes to {Os-3(CO)(10)(mu-H)[(mu-O)Si7O10(c-C6H11)(7)]} and the new clusters {Os-3(CO)(10)(mu-H)[(mu-O)Si7O9(OH)(2)(c-C6H11)(7)]}, {[Os-3(CO)(10)(mu-H)](2)(mu-O)(2)Si7O9

摘要

The reactions of [Os-3(CO)(10)(mu-H)(mu-OH)] (3) with the incompletely condensed silsesquioxanes [(c-C6H11)(7)Si7O9(OH)(3)] (1) and [(c-C6H11)(8)Si8O11(OH)(2)] (2) afford in high yield {Os-3(CO)(10)(mu-H)[(mu-O)Si7O10(c-C6H11)(7)]} (4) and the new compounds {Os-3(CO)(10)(mu-H)[(mu-O)Si7O9(OH)(2)(c-C6H11)(7)]} (5), {[Os-3(CO)(10)(mu-H)](2)(mu-O)(2)Si7O9(OH)(c-C6H11)(7)} (6), {Os-3(CO)(10)(mu-H)[(mu-O)Si8O11(OH)(c-C6H11)(8)]} (8), and {[Os-3(CO)(10)(mu-H)](2)(mu-O)(2)Si8O11(c-C6H11)(8)} (9), which are discrete molecular models of silica-anchored [Os-3(CO)(10)(mu-H)(mu-OSi)]. Compounds 6 and 9 represent the first examples of complexes containing two [Os-3(CO)(10)(mu-H)] cluster cores. The X-ray structures of 5, 8, and 9 are reported.