Abstract
A new form of lithium zinc phosphate has been prepared under high temperature and high pressure. The structure consists of lithium, zinc, and phosphorus atoms tetrahedrally coordinated to oxygen atoms. The three-dimensional framework structure can be described as belonging to the family of stuffed cristobalite structures with zinc and phosphorus atoms as framework tetrahedral atoms and lithium as extra-framework, charge-balancing cations. The cristobalite framework is derived from that of the diamond type, with the insertion of oxygen atoms between tetrahedral atoms. It is constructed from the stacking of hexagonal layers in the ABC sequence and consists of six-ring channels propagating in directions significantly offset from the stacking directions of layers. Crystal data for LiZnPO4:M=167.28, space groupCc(No. 9),a=17.2962(1) Å,b=9.7753(1),c=16.1989(2) Å,β=98.953(1)°,V=2705.47(5) Å3,Z=32,Dc=3.285 g cm−3, MoKα,μ=7.573 mm−1, 2θmax=56.52°,R(F)=2.35% for 506 parameters and 6219 reflections withI>2σ(I).
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