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Crystal Structure and Intercalation Properties of γ‐Zr(AsO 4 )(H 2 AsO 4 ) × 2 H 2 O
Author(s) -
Rodríguez Julio,
Suárez Marta,
Rodríguez M. Luz,
Llavona Ricardo,
Arce M. José,
Salvadó Miguel A.,
Pertierra Pilar,
GarcíaGranda Santiago
Publication year - 1999
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199901)1999:1<61::aid-ejic61>3.0.co;2-w
Subject(s) - cyclohexylamine , chemistry , intercalation (chemistry) , piperidine , monoclinic crystal system , octahedron , amine gas treating , crystallography , crystal structure , benzylamine , methylamine , cyclic amines , pyridine , inorganic chemistry , stereochemistry , medicinal chemistry , organic chemistry
The crystalline structure of γ‐Zr(AsO 4 )(H 2 AsO 4 ) × 2 H 2 O (γ‐ZrAs) has been refined by the Rietveld method. It has a monoclinic P 2 1 layered structure built up from AsO 4 tetrahedra and ZrO 6 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 (CH 3 [CH 2 ] n NH 2 ; 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.