559. Ammonium Tetrachlorozincate

Nomenclature

CAS number: 14639-97-5
(T-4)-Tetrachlorozincate(2) ammonium (1:2).
Cl4H8N2Zn; mol wt 243.30.
Cl 58.29%, H 3.31%, N 11.51%, Zn 26.88%.
(NH4)2ZnCl4.

Description and references

Prepd by dissolving 70 g ZnCl2 and 30 g NH4Cl in 29 ml hot water and crystallizing: Meerburg, Z. Anorg. Allg. Chem. 37, 199 (1903); Wagenknecht, Juza in Handbook of Preparative Inorganic Chemistry Vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) p 1072.

Properties

White, thin, shiny platelets. Orthorhombic bipyramidal. Hygroscopic. d 1.879. mp ≈150° (dec). Sublimes at 341° without melting, if absolutely dry. Very sol in water with absorption of heat.