Silicate 矽酸盐
A silicate is a compound containing an anionic silicon compound. The great majority of the silicates are oxides, but hexafluorosilicate ([SiF6]) and other anions are also included.
"Orthosilicate" is the anion SiO4−
4 or its compounds. Related to orthosilicate are families of anions (and their compounds) with the formula [SiO2+n]. Important members are the cyclic and single chain silicates {[SiO3]}n and the sheet-forming silicates {[SiO2.5]}n.