title: Ba3Li2V2O7Cl4, a new vanadate with a channel structure.
abstract: The tribarium dilithium divanadate tetrachloride Ba(3)Li(2)V(2)O(7)Cl(4) is a new vanadate with a channel structure and the first known vanadate containing both Ba and Li atoms. The structure contains four non-equivalent Ba(2+) sites (two with m and two with 2/m site symmetry), two Li(+) sites, two nonmagnetic V(5+) sites, five O(2-) sites (three with m site symmetry) and four Cl(-) sites (m site symmetry). One type of Li atom lies in LiO(4) tetrahedra (m site symmetry) and shares corners with VO(4) tetrahedra to form eight-tetrahedron Li(3)V(5)O(24) rings and six-tetrahedron Li(2)V(4)O(18) rings; these rings are linked within porous layers parallel to the ab plane and contain Ba(2+) and Cl(-) ions. The other Li atoms are located on inversion centres and form isolated chains of face-sharing LiCl(6) octahedra.
authors.affiliation: Institut für Kristallographie der RWTH Aachen, Jägerstrasse 17-19, 52056 Aachen, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Reeswinkel
authors.forename: Karine M
authors.initials: KM
authors.lastname: Sparta
authors.forename: Georg
authors.initials: G
authors.lastname: Roth