KHCoP2O7.2H2O: a novel acidic pyrophosphate.
Potassium cobalt hydrogenpyrophosphate dihydrate, KHCoP(2)O(7).2H(2)O, crystallizes in the orthorhombic space group Pnma. This salt is isotypic with KHMP(2)O(7).2H(2)O (M = Mn and Zn). The structure consists of alternating layers, built from HP(2)O(7)(3-) acidic pyrophosphate groups and CoO(6) octahedra, joined by potassium ions and bridging hydrogen bonds. The Co, K and water O atoms lie on mirror planes. The pyrophosphate group consists of two symmetry-related PO(4) groups, with the bridging O atom on a mirror plane.
Harcharras
Mohamed
M
Laboratory of Spectroscopy, Department of Chemistry, Faculty of Sciences, University Ibn Tofail, BP 133, 14000 Kenitra, Morocco.
Goubitz
Kees
K
Ennaciri
Abdelaziz
A
Assaaoudi
Hassane
H
Schenk
Henk
H