PbTeB4O9: a lead tellurium borate with unprecedented fundamental building block [B4O10] and large birefringence†
Abstract
Herein, the first lead tellurium borate, PbTeB4O9, with an unprecedented fundamental building block [B4O10] was successfully synthesized. The near-parallel alignment of [B4O10] groups and [TeO3] polyhedra resulted in a high birefringence (0.099@1064 nm). The structure–property relationship was discussed by using the first-principles calculations.