Acta Cryst. (2004). E60, m370-m372  [ doi:10.1107/S1600536804003812 ]

trans-Bis(3-amino-1,2,4-triazolium-N¹)dichlorocopper(II) tetrachlorocuprate(II) dihydrate

C. Sánchez, J. M. Salas, M. Quirós and M. P. Sánchez

Abstract: The title compound, trans-[CuCl₂(tzH)₂][CuCl₄]·2H₂O (thz is 3-amino-1,2,4-triazolium, C₂H₅N₄), was obtained by the decomposition of a 1,2,4-triazolo-[1,5-a]pyrimidine derivative in concentrated hydrochloric acid in the presence of Cu^II. The two Cu^II ions occupy crystallographic inversion centres and display square-planar (or tetragonally very elongated) geometries. The complex cation of this salt is an example of a positively charged species (protonated 3-amino-1,2,4-triazole) coordinated to a metal atom.

Online 13 March 2004

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