A novel flower basket-shaped organosilyl derivative based on trivacant tungstosilicate: [(C4H9)4N]3H[α-A-SiW9O34(CH3SiO)6]·3H2O

A novel hexasubstituted organosilyl derivative based on trivacant tungstosilicate [(C4H9)4N]3[α-A-SiW9O34(CH3SiOH)6]·3H2O (1), was synthesized under phase-transfer conditions, by the reaction of the CH3SiHCl2 with Na10[α-SiW9O34]∙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 R3m, with lattice constants a = 26.0333(2) Å, b = 26.0333(2) Å, c = 13.7239(2) Å, V = 8055.02(15) Å3, and Z = 3, which consists of a trivacant Keggin moiety [α-A-SiW9O34]10−, on which six {CH3Si} groups are grafted via six SiOW bridges, and that each of the six {CH3Si} groups links with two adjacent ones through SiOSi bridges resulting in a unique flower basket-shaped polyoxoanion framework.

Graphical abstractA novel hexasubstituted organosilyl derivative based on trivacant tungstosilicate [(C4H9)4 N]3H[α-ASiW9O34(CH3SiO)6]·3H2O was synthesized under phase-transfer conditions. The compound displays an open flower basket-shaped framework.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights► A hexasubstituted organosilyl derivative based on trivacant POMs was synthesized. ► The compound has been characterized by IR spectrum, elemental analyses. ► The compound consists of a [α-A-SiW9O34]10− and a cyclic hexameric (CH3SiO)6 group. ► The polyoxoanion represents a novel flower basket-shaped open framework.