Thiosilicate
In chemistry and materials science, thiosilicate refers to materials containing anions of the formula SiS]2n-. Derivatives where some sulfide is replaced by oxide are also called thiosilicates, examples being materials derived from the oxohexathiodisilicate 6-. Silicon is tetrahedral in all thiosilicates. Formally such materials are derived from silicon disulfide in analogy to the relationship between silicon dioxide and silicates. Thiosilicates are solids that are typically colorless. They are characteristically sensitive to hydrolysis.The LISICON include thiosilicates, which are fast ion conductors. Thiosilicates and related thiogermanates are also of interest for infra red optics, since they only absorb low frequency IR modes.
