RbSb(SO4)(H2PO2)F: A Short-Wave UV Antimony(III) Oxysalt with Mixed-Anions Demonstrating Enhanced Birefringence

A short-wave UV antimony( iii ) oxysalt, RbSb(SO 4 )(H 2 PO 2 )F, was synthesized with a birefringence of up to 0.192 at 546 nm by combining three distinct anions (SO 4 2− , H 2 PO 2 − , and F − ) with Sb 3+ bearing SCALP electrons.