A novel flower basket-shaped organosilyl derivative based on trivacant tungstosilicate: [(C4H9)4N]3H[α-A-SiW9O_(34)CH3SiO)6]·3H2O

摘要

A novel hexasubstituted organosilyl derivative based on trivacant tungstosilicate [(C4H9)4N]3[α-A-SiW9O_(34) (CH3SiOH)6]·3H2O (1), was synthesized under phase-transfer conditions, by the reaction of the CH3SiHCl2 with Na_(10)[α-SiW9O_(34)]·18H2O, which was characterized by IR spectrum, elemental analyses and X-ray single crystal diffraction. X-ray structural analysis reveals that 1 crystallizes in hexagonal space group R_(3m), with lattice constants a =26.0333(2) A, b =26.0333(2) A, c =13.7239(2) A, V = 8055.02(15) A~3, and Z=3, which consists of a trivacant Keggin moiety [α-A-SiW9O_(34)]~(10-), on which six {CH3Si-} groups are grafted via six Si-O-W bridges, and that each of the six {CH3Si-} groups links with two adjacent ones through Si-O-Si bridges resulting in a unique flower basket-shaped polyoxoanion framework.