Citation: Zhang, Wenbin; Guo, Siru; Han, Shujuan; Wang, Liying; Zhou, Xin; Yang, Zhihua; Pan, Shilie (2021). BaB4O5F4 with reversible phase transition featuring unprecedented fundamental building blocks of [B16O21F16] in the \a-phase and [B4O6F4] in the \b-phase.. Chemical communications (Cambridge, England), 57, pp. 4182-4185.