ISSN:
1600-5759
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The title compound, K5[BW12O40]·16H2O, contains a [BW12O40]5− polyanion of 222 crystallographic symmetry, with a central tetrahedrally coordinated BIII atom surrounded by four groups of three edge-sharing octahedra (W3O13 subunits), which are linked in turn to each other and to the central BO4 tetrahedron by shared O atoms at the vertices. There is a crystallographically unique B—O bond of 1.554 (10) Å, while the average W—O distances are 2.344 (17) Å for four coordinate O atoms, 1.917 (12) and 1.89 (2) Å for two coordinate O atoms within and connecting the W3O13 subunits, respectively, and 1.709 (8) Å for terminal O atoms. Not all of the K+ ions and H2O groups were located.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108270101002840
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