title: Dicaesium hexa-mercury hepta-sulfide.
abstract: The title compound, Cs(2)Hg(6)S(7), crystallizes in a new structure type that is closely related to that of K(2)Zn(6)O(7). The structure comprises a three-dimensional mercury sulfide network that is composed of channels. These channels, which are along [001], are of two different diameters. The crystal structure contains one Cs, two Hg, and three S atoms in the asymmetric unit. The Cs, one Hg, and one S atom are at sites of symmetry m, whereas a second S atom is at a site of symmetry 2mm. The Hg atoms are bound to the S atoms in both three- and four-coordinate geometries. The caesium cations occupy the central spaces of the larger diameter channels and exhibit a coordination number of 7.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA.
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Bugaris
authors.forename: James A
authors.initials: JA
authors.lastname: Ibers