Structural Novelties in Anionic Cluster Halide Phases. Discrete Tetrahedral A<sub>4</sub>Br<sup>+</sup> Ions in Two New Zirconium Bromide Structures (A = Na−Cs)
作者:Ru-Yi Qi、John D. Corbett
DOI:10.1021/ic970818u
日期:1997.12.1
containers at 850 degrees C afford two series of quaternary clusterphases containing A(4)Br(3+) ions. Cubic (A(4)Br)(2)Zr(6)(Z)Br(18) phases occur for various combinations of A = Na-Cs, Z = Be, B, H, Mn. The combination with A = K, Z = B was structurally characterized (inverse fluorite, Fm&thremacr;m, Z = 4, a = 16.191(2) Å). The 15-e cluster exhibits the appropriate magnetic moment, and this decreases