The molecule is a divalent inorganic anion obtained by removal of two of the five protons from orthoperiodic acid It is an orthoperiodate ion and a divalent inorganic anion. It is a conjugate base of an orthoperiodate(1-). It is a conjugate acid of an orthoperiodate(3-).
trihydroxy-dioxido-oxo-lambda7-iodane