title: Three-dimensional frameworks of cubic (NH4)5Ga4SbS10, (NH4)4Ga4SbS9(OH) x H2O, and (NH4)3Ga4SbS9(OH2) x 2 H2O.
abstract: Three new isostructural open-framework sulfides, (NH(4))(5)Ga(4)SbS(10) (1), (NH(4))(4)Ga(4)SbS(9)(OH) x H(2)O (2a), and (NH(4))(3)Ga(4)SbS(9)(H(2)O) x 2 H(2)O (2b), were synthesized under basic hydrothermal conditions using ammonium hydroxide as the structure-directing agent. The structures feature a three-dimensional open framework comprised of adamantane [Ga(4)Q(10)](8-) clusters linked with Sb(3+) centers. The compounds are wide gap semiconductors, crystallize in the chiral space group P2(1)3, and represent a new structure type. They exhibit nonlinear optical properties.
authors.affiliation: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, USA.
authors.forename: Joshua L
authors.initials: JL
authors.lastname: Mertz
authors.forename: Nan
authors.initials: N
authors.lastname: Ding
authors.forename: Mercouri G
authors.initials: MG
authors.lastname: Kanatzidis