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.
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Mertz et al. (2009) studied this question.
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