Antimonate
In chemistry an antimonate is a compound which contains a metallic element, oxygen, and antimony in an oxidation state of +5. These compounds adopt polymeric structures with M-O-Sb linkages. They can be considered to be derivatives of the hypothetical antimonic acid HSbO, or combinations of metal oxides and antimony pentoxide, SbO. Historically these compounds were assumed to be analogous to the phosphates and formulas such as LiSbO·3HO and NaHSbO·5HO were used and the compounds described as hydrated meta-antimonates and pyro-antimonates. LiSbO·3HO is now known to be LiSb(OH) and contain the anion and that NaHSbO·5HO is  actually NaSb(OH). Some examples of antimonates and their structures are shown below: Antimonate in chemical nomenclature. IUPAC recommendations are that compounds with anions containing antimony(V) have the antimonate(V) suffix or antimonate followed by a charge number, for example the ion would be called hexahydridoxidoantimonate(V) or alternatively hexahydroxidoantimonate(1−).