Strukturchemie von verbindungen des pentakoordinierten siliciums. Kristall- und molekülstruktur von tetrapropylammonium-phenyltetrafluorsilicat

Abstract

The crystal and molecular structure of [NPr 4] +[PhSiF 4] − is discussed. The anion displays trigonal-bipyramidal geometry around the central atom with the phenyl group in equatorial position. The bonding parameters obtained are SiF ax 1.668 and 1.670 Å, SiF eq 1.597 and 1.606 Å, SiC 1.871 Å. The structure of the title compound is compared to that of the related phenyltetrafluorophosphorane.