title: K4Vp2S9.
abstract: The new quaternary group V thiophosphate K(4)VP(2)S(9) (tetrapotassium vanadium diphosphorus nonasulfide) was prepared by reacting a mixture of K(2)S(3), VP, P(4)S(3) and S. The crystal structure consists of discrete [VS(PS(4))(2)](4-) anions and K(+) cations. The V(4+) cation is in a fivefold coordination of S atoms which form a square-pyramidal environment. Each VS(5) group shares a common edge with two bidentate [PS(4)] tetrahedra, yielding the complete anion. The anions are stacked in the direction of the crystallographic b axis and are separated by the K(+) ions.
authors.affiliation: Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Olshausenstrasse 40, D-24089 Kiel, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Gutzmann
authors.forename: Christian
authors.initials: C
authors.lastname: Näther
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Bensch