Contribution to the crystal chemistry of MIMIIPO4 monophosphates (MI = K, Rb, Cs; MII = Be)
作者:R. Masse、A. Durif
DOI:10.1016/0022-4596(88)90132-6
日期:1988.4
growth experiments and crystal structures of KBePO4, RbBePO4, and CsBePO4 are reported. KBePO4 is orthorhombic, Pc21n, with a = 8.506(4), b = 4.937(4), c = 8.344(5) Å, and Z = 4. RbBePO4 is orthorhombic, Pcmn or Pc21n, with a = 8.636(3), b = 5.012(2), c = 8.587(3) Å, and Z = 4. CsBePO4 is orthorhombic, Pnam with a = 8.713(4), b = 8.836(5), c = 5.147(4) Å, and Z = 4. The crystal structures of KBePO4 and
报道了KBePO 4,RbBePO 4和CsBePO 4的单晶生长实验和晶体结构。KBePO 4是斜方晶系,PC 2 1 Ñ,具有一个= 8.506(4),b = 4.937(4),C ^ = 8.344(5),和ž = 4 RbBePO 4是斜方晶系,Pcmn或PC 2 1 Ñ,与一个= 8.636(3),b = 5.012(2),C ^ = 8.587(3)埃,ž = 4 CsBePO 4是斜方晶系,Pnam的a = 8.713(4),b = 8.836(5),c = 5.147(4)Å和Z =4。KBePO 4和CsBePO 4的晶体结构已被解析,最终的R值为0.043(472)反射)和0.027(717个反射)。它们与β-tridymite的紧密相关。