Arsenic(III), antimony(III) and bismuth(III) thiobenzoates: Crystal and molecular structures of M(SOCR)(3) and PhSb(SOCPh)(2)

摘要

Tris-thiobenzoates of arsenic, antimony and bismuth, M(SOCR)(3) have been obtained from their oxides and characterized. In the X-ray crystal structure determinations of these, the group 15 atom and the three covalently bonded sulfur atoms are found to constitute a trigonal pyramid, the central atoms lie at a C-3 axis. In the bismuth complex the thiobenzoate ligand tends to chelate. However, three comparatively short intermolecular M---S interactions are significant features for these molecules resulting in stacking of trigonal prisms providing an essentially six coordinate environment around arsenic and antimony and a nine-coordinate one for bismuth. The structure of PhSb(SOCPh)(2) can be considered to be distorted trigonal bipyramidal. [References: 34]