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Cobalt potassium di­hydrogendiphosphate dihydrate, CoK2(H2P2O7)2·2H2O

✍ Scribed by Alaoui Tahiri, Aziz ;Ouarsal, Rachid ;Lachkar, Mohammed ;El Bali, Brahim ;Bolte, Michael

Publisher
International Union of Crystallography
Year
2002
Tongue
English
Weight
202 KB
Volume
58
Category
Article
ISSN
1600-5368

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✦ Synopsis

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 mirror plane.

2 )/3 (Á/') max = 0.001 Á& max = 0.37 e A Ê À3 Á& min = À0.70 e A Ê À3

📜 SIMILAR VOLUMES

Synthesis, crystal structure and vibrati
Synthesis, crystal structure and vibrational spectra of a new di­ammonium zinc(II) di­hydrogendiphosphate dihydrate, (NH4)2Zn(H2P2O7)2·2H2O
✍ Essehli, Rachid ;Lachkar, Mohammed ;Svoboda, Ingrid ;Fuess, Hartmut ;El Bali, Br 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 101 KB

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.

(NH4)2[Co(H2P2O7)2(H2O)2]
(NH4)2[Co(H2P2O7)2(H2O)2]
✍ Essehli, Rachid ;Lachkar, Mohammed ;Svoboda, Ingrid ;Fuess, Hartmut ;El Bali, Br 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 90 KB
(NH4)2[Ni(H2P2O7)2(H2O)2]
(NH4)2[Ni(H2P2O7)2(H2O)2]
✍ Essehli, Rachid ;Lachkar, Mohammed ;Svoboda, Ingrid ;Fuess, Hartmut ;El Bali, Br 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 98 KB

Diammonium nickel(II) dihydrogendiphosphate(V) dihydrate is a member of the isotypic series (NH 4 ) 2 T(H 2 P 2 O 7 ) 2 Á2H 2 O (T = Mn, Co or Zn). Isolated almost-regular NiO 6 octahedra form a layered structure. The Raman spectrum shows bands characteristic of H 2 P 2 O 7 groups.