ISSN:
1434-1948
Schlagwort(e):
Zirconium arsenate
;
Crystal structure
;
Amine intercalation
;
Chemistry
;
General Chemistry
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
The crystalline structure of γ-Zr(AsO4)(H2AsO4) × 2 H2O (γ-ZrAs) has been refined by the Rietveld method. It has a monoclinic P21 layered structure built up from AsO4 tetrahedra and ZrO6 octahedra stacked along the 001 direction. The cell parameters are: a = 5.5752(6) Å, b = 6.8290(7) Å, c = 12.110(1) Å, and β = 103.03(1)°. The layered nature of γ-ZrAs is confirmed by the intercalation of n-alkylamines (CH3[CH2]nNH2; n = 0-5) as well as of cyclic amines (benzylamine, cyclohexylamine, piperidine, and pyridine). Among the linear amines, only with methyl-, ethyl-, and hexylamine is the maximum incorporation attained. With the cyclic amines, except in the case of pyridine, pure new phases are obtained, with the highest degree of intercalation being one mol of amine per mol of γ-ZrAs.
Zusätzliches Material:
5 Ill.
Materialart:
Digitale Medien
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