CobaltMaghrebV1, Main, Exploration, bibRecord, 001637

Structure cristalline et investigation par spectrométrie de vibration IR des cyclotétraphosphates pentahydratés M IIK2P4O12 · 5H2O ( M II = NI, Co)

Identifieur interne : 001637 ( Main/Exploration ); précédent : 001636; suivant : 001638

Structure cristalline et investigation par spectrométrie de vibration IR des cyclotétraphosphates pentahydratés M IIK2P4O12 · 5H2O ( M II = NI, Co)

Auteurs : Amor Jouini [Tunisie] ; M. Soua [Tunisie] ; M. Dabbabi [Tunisie]

Source :

Journal of Solid State Chemistry [ 0022-4596 ] ; 1987.

RBID : ISTEX:517C77945118F240E02A22690748F57B7D414633

Descripteurs français

Pascal (Inist)
- Cobalt Potassium Phosphate Mixte, Composé minéral, Diffraction RX, Etude expérimentale, Hydrate, Métal transition Composé, Nickel Potassium Phosphate Mixte, Spectre IR, Structure cristalline.
Wicri :
- topic : Composé minéral.

English descriptors

KwdEn :
- Cobalt Potassium Phosphates Mixed, Crystalline structure, Experimental study, Hydrates, Infrared spectrum, Inorganic compound, Nickel Potassium Phosphates Mixed, Transition metal Compounds, X ray diffraction.

Abstract

Abstract: To determine the reorganization occurring during the dehydration of nickel dipotassium cyclotetraphosphate heptahydrate, NiK2P4O12 · 7H2O (A. Jouini, M. Dabbabi, and A. Durif, J. Solid State Chem. 60, 6 (1985)), leading to the pentahydrate, we studied the crystal structure of the corresponding isotypic cobalt salt CoK2P4O12 · 5H2O because of the lack of NiK2P4O12 · 5H12O single crystals. The symmetry is monoclinic, P21 c, a = 12.995(2), b = 16.294(2), c = 7.432(2) Å, β = 92.17(1)°, Z = 4, and R = 0.033 for 3122 independent reflections. H atoms have been located and refined. A detailed IR study of both NiK2P4O12 · 5H2O and CoK2P4O12 · 5H2O is reported and a tentative explanation for the dehydration and reorganization is proposed.

Url:

https://api.istex.fr/document/517C77945118F240E02A22690748F57B7D414633/fulltext/pdf

DOI: 10.1016/0022-4596(87)90019-3

Affiliations:

Le document en format XML

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<front><div type="abstract" xml:lang="en">Abstract: To determine the reorganization occurring during the dehydration of nickel dipotassium cyclotetraphosphate heptahydrate, NiK2P4O12 · 7H2O (A. Jouini, M. Dabbabi, and A. Durif, J. Solid State Chem. 60, 6 (1985)), leading to the pentahydrate, we studied the crystal structure of the corresponding isotypic cobalt salt CoK2P4O12 · 5H2O because of the lack of NiK2P4O12 · 5H12O single crystals. The symmetry is monoclinic, P21 c, a = 12.995(2), b = 16.294(2), c = 7.432(2) Å, β = 92.17(1)°, Z = 4, and R = 0.033 for 3122 independent reflections. H atoms have been located and refined. A detailed IR study of both NiK2P4O12 · 5H2O and CoK2P4O12 · 5H2O is reported and a tentative explanation for the dehydration and reorganization is proposed.</div>
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Serveur d'exploration sur le cobalt au Maghreb

Structure cristalline et investigation par spectrométrie de vibration IR des cyclotétraphosphates pentahydratés M IIK2P4O12 · 5H2O ( M II = NI, Co)

Structure cristalline et investigation par spectrométrie de vibration IR des cyclotétraphosphates pentahydratés M IIK2P4O12 · 5H2O ( M II = NI, Co)

Source :

Descripteurs français

English descriptors

Abstract

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