Citation: Lu, Zixiu; Zhang, Fangfang; Tudi, Abudukadi; Yang, Zhihua; Pan, Shilie (2020). RbB3O4F2: a rubidium fluorooxoborate with an unprecedented [B3O5F2]3- functionalized unit and a large birefringence.. Chemical communications (Cambridge, England), 56, pp. 15333-15336.