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Dipotassium manganese(II) bis­(di­hydrogendiphosphate) dihydrate, K2Mn(H2P2O7)2·2H2O

✍ Scribed by Alaoui Tahiri, Aziz ;Ouarsal, Rachid ;Lachkar, Mohammed ;Zavalij, Peter Y. ;El Bali, Brahim

Publisher
International Union of Crystallography
Year
2003
Tongue
English
Weight
150 KB
Volume
59
Category
Article
ISSN
1600-5368

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The crystal structure of the title compound, CoK 2 (H 2 -P 2 O 7 ) 2 Á2H 2 O, is, to our knowledge, the ®rst example of a mixed-metal dihydrogendiphosphate, containing an alkali earth metal and a divalent transition metal. The metal ions and the two water O atoms are located on a crystallographic mi

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Synthesis, crystal structure and vibrational spectra of a new di­ammonium zinc(II) di­hydrogendiphosphate dihydrate, (NH4)2Zn(H2P2O7)2·2H2O
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is isostructural with its manganese homologue. Isolated almost-regular ZnO 6 octahedra form a layered structure. The IR and Raman spectra show bands characteristic of H 2 P 2 O 7 groups.