Abstract

A new layered lithium zinc phosphate hydrate, Li2Zn(HPO4)2·0.66H2O, isostructural with Na2Zn(HPO4)2·4H2O was prepared by the direct ambient pressure and temperature reaction between zinc 2,4-pentanedionate, phosphoric acid, and lithium hydroxide. The as-prepared sample is monoclinic (a=8.896(8) Å, b=13.092(5) Å, c=10.882(9) Å, and β=115.760(6)°). The prepared solid undergoes three thermal transformations when it is heated from 110 to 600°C. The first two transformations are due to the release of intercalated water molecules and the third one is due to the HPO2−4–P2O4−7 transition.

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