THE INTRIGUING STRUCTURAL CHARACTERISTICS OF THE HETEROSILOXANE MOLECULE NA4[SB2O(OSIME3)8] Academic Article uri icon

abstract

  • Treatment of Sb(OSiMe3)3 with NaOSiMe3 in the molar ratio 1:2 in hexane at ambient temperature leads to the formation of Me3SiOSiMe3 and a crystalline complex of the formula Na4[Sb2O(OSiMe3)8] in ca. 35% yield. The composition of the product has been confirmed by elemental analysis and negativeion CI mass spectrometry. The single crystal Xray structure analysis (rhombohedral, space group Rdocumentclass{article}pagestyle{empty}\begin{document}$\bar{3}$end{document}c, Z6) resulted in a disorder model for the complex with pseudocubic symmetry owing to virtually random distribution of sodium and antimony atoms over the vertices of an oxygencentered octahedron with the eight silyloxy groups capping the faces. Low solubility in noncoordinating solvents prevented solution NMR studies, but solidstate NMR investigations using cross polarization and magicangle spinning techniques (13C, 29Si) allowed the assignment of a point group C2v structure with the SbIII atoms in cis position relative to the oxo center of the complex. Copyright 1993 WILEYVCH Verlag GmbH & Co. KGaA, Weinheim

published proceedings

  • CHEMISCHE BERICHTE-RECUEIL

author list (cited authors)

  • BAIER, M., BISSINGER, P., BLUMEL, J., & SCHMIDBAUR, H.

citation count

  • 20

complete list of authors

  • BAIER, M||BISSINGER, P||BLUMEL, J||SCHMIDBAUR, H

publication date

  • January 1993

publisher