Tetraalky lammonium - tetr achlor oantimonate (III). Struktur und Schwingungsspektren / Tetraalky lammonium Tetrachloroantimonates(III). Structure and Vibrational Spectra

Abstract

The crystal and molecular structures of tetraethyl- (1), tetra-η-propyl- (2) and tetra-nbutylammonium tetrachloroantimonate(III) (3) were determined by X-ray analysis. There are discrete Sb 4 Cl 16 4- (1) and Sb 2 Cl 8 2- (2 and 3) anions. The Sb-Cl bond lengths vary in the range between 234 and 326 pm, and are explained as in a three centre-four electron situation. The vibrational spectra of the anions are briefly discussed