Citation: Assaaoudi, Hassane; Ennaciri, Abdelaziz; Harcharras, Mohamed; El Bali, Brahim; Reinauer, Felix; Glaum, Robert; Rulmont, Andr\'e; Spirlet, Marie-Rose (2002). KZn(HP~2~O~7~)·2H~2~O and KMn(HP~2~O~7~)·2H~2~O: acid pyrophosphate metallates(II) with layer structures. Acta Crystallographica Section C, 58, pp. i79-i81.
Formula: H5 K Mn O9 P2
Chemical name: potassium manganese(II) hydrogenpyrophosphate dihydrate
List type: interleaving
List: 2D
Basis: (0;1;0 0;0;1)
Dimensionality: 2
Formula: H12 Mn2 O18 P4 (H6 Mn O9 P2)
Multiplicity: 1