Acta Cryst. (2003). E59, i10-i13  [ doi:10.1107/S1600536803000990 ]

NaAl(MoO₄)₂: a rare structure type among layered yavapaiite-related AM(XO₄)₂ compounds

U. Kolitsch, M. Maczka and J. Hanuza

Abstract: NaAl(MoO₄)₂, sodium aluminium dimolybdate(VI), represents a rare pseudo-orthorhombic structure type among AM(XO₄)₂ compounds with yavapaiite-related sheet structures. It is isostructural with NaFe(MoO₄)₂. Infinite (001) sheets composed of AlO₆ octahedra, corner-linked to MoO₄ tetrahedra, are separated by eight-coordinated Na atoms. Average Na-O, Al-O and Mo-O bond lengths are 2.648, 1.890, and 1.762 Å, respectively. All atoms are on general positions except for Na and Al (both of which have site symmetry ).

Copyright © International Union of Crystallography
IUCr Webmaster