The molecule is a monovalent inorganic anion that consists of dimolybdic acid where one of the two OH groups has been deprotonated. It is a molybdenum oxoanion and a monovalent inorganic anion. It is a conjugate base of a dimolybdic acid. It is a conjugate acid of a dimolybdate(2-).
hydroxy-(oxido(dioxo)molybdenio)oxy-dioxomolybdenum