caa a22 4500 378854763 CHVBK 20180305123332.0 cr unu---uuuuu 161128e20030501xx s 000 0 eng 10.1524/zkri.218.5.345.20738 doi (NATIONALLICENCE)gruyter-10.1524/zkri.218.5.345.20738 Crystal structure of new hexahydrate dicobalt pyrophosphate Co2P2O7·6H2O: comparison with Co2P2O72H2O, α-, β- and γ-Co2P2O7 [Elektronische Daten] [F. Capitelli, M. Harcharras, H. Assaaoudi, A. Ennaciri, A. G. G. Moliterni, V. Bertolasi] A new dicobalt pyrophosphate, Co2P2O7·6H2O, has been synthesized and characterized by single crystal X-ray diffraction. The compound belongs to the mono clinic space group P21/n, and its unit cell dimensions are: a = 7.2077(2), b = 18.3373(5), c = 7.6762(2) Å, β = 92.4356(15)°, V = 1013.64(5) Å3, Z = 4. The structural parameters were refined to an R index of 0.0570 for 1937 reflections with I>2σ(Io). The framework of this pyro phosphate is made by the packing of layers of discrete CoO6 octahedra connected by double tetrahedra P2O7 groups. The (P2O7)4- anion group shows bent eclipsed conformation. A comparative study among anhydrous (α-, β- and γ-Co2P2O7) and hydrated forms (Co2P2O7·2H2O) of dicobalt pyrophosphates known in literature is presented. © 2003 Oldenbourg Wissenschaftsverlag GmbH Crystallography nationallicence Inorganic chemistry nationallicence Organic chemistry nationallicence Capitelli F. aut Harcharras M. aut Assaaoudi H. aut Ennaciri A. aut Moliterni A. G. G. aut Bertolasi V. aut Zeitschrift für Kristallographie - Crystalline Materials De Gruyter Oldenbourg 218/5(2003-05-01), 345-350 2194-4946 218:5<345 2003 218 zkri https://doi.org/10.1524/zkri.218.5.345.20738 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1524/zkri.218.5.345.20738 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Capitelli F. aut NATIONALLICENCE 700 1- Harcharras M. aut NATIONALLICENCE 700 1- Assaaoudi H. aut NATIONALLICENCE 700 1- Ennaciri A. aut NATIONALLICENCE 700 1- Moliterni A. G. G. aut NATIONALLICENCE 700 1- Bertolasi V. aut NATIONALLICENCE 773 0- Zeitschrift für Kristallographie - Crystalline Materials De Gruyter Oldenbourg 218/5(2003-05-01), 345-350 2194-4946 218:5<345 2003 218 zkri CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter