New Antimony Fluorooxoborates with Great Birefringence and Unprecedented Structural Characterisation

The first antimony( iii ) fluorooxoborate with unprecedented [B 2 O 4 F] ∞ chains, namely SbB 2 O 4 F, has been successfully synthesized. Remarkably, SbB 2 O 4 F displays large birefringence (0.171@1064 nm) and short UV cutoff edges (about 220 nm).