KZn(HP(2)O(7)) x 2H(2)O and KMn(HP(2)O(7)) x -2H(2)O: acidpyrophosphate metallates(II) with layer structures.
The crystal structures of the isomorphous title compounds, namely potassium zinc hydrogen pyrophosphate dihydrate and potassium manganese hydrogen pyrophosphate dihydrate, consist of acidic pyrophosphate-metallate(II) layers joined by K(+) ions and hydrogen-bridging bonds. The Zn(2+)/Mn(2+) ions are octahedrally surrounded by four pyrophosphate O atoms and by two water molecules. The (HP(2)O(7))(3-) anions exhibit eclipsed conformations. The metal ions and water O atoms lie on mirror planes, as does the central O atom of the (HP(2)O(7))(3-) anion.
Assaaoudi
Hassane
H
Laboratoire de Spectroscopie, Département de Chimie, Faculté des Sciences, Université Ibn Tofail, Kénitra, Morocco.
Ennaciri
Abdelaziz
A
Harcharras
Mohamed
M
El-Bali
Brahim
B
Reinauer
Felix
F
Glaum
Robert
R
Rulmont
André
A
Spirlet
Marie-Rose
MR