Manohar, H and Ramaseshan, S (1964) Crystal co-ordination of the barium ion. In: Proceedings of the Indian Academy of Sciences - Section A, 60 (5). pp. 317-351.
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Abstract
A systematic study has been made of the crystal co-ordination of the barium ion in various compounds whose structures have been solved. Apart from the more common co-ordination polyhedra which are enumerated in text-books, a number of new polyhedra have been identified, particularly in cases where the co-ordination numbers are unusual, such as ten or eleven. According to the radius-ratio rule of Pauling, a co-ordination number of nine or ten is normally expected for the barium ion. The present investigations, however, reveal that it shows a variety of co-ordinations with ligancies from six up to twelve. Some of the factors that might possibly enter in explaining this wide range of co-ordination numbers are discussed. It appears as though the part played by the Ba2+ ion in deciding the structure is secondary, limiting itself only to occupying vacant spaces provided by other atoms in the crystal.
Item Type: | Journal Article |
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Publication: | Proceedings of the Indian Academy of Sciences - Section A |
Publisher: | Indian Academy of Sciences |
Additional Information: | Copyright of this article belongs to Indian Academy of Sciences. |
Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
Date Deposited: | 03 Jun 2010 05:49 |
Last Modified: | 19 Sep 2010 06:07 |
URI: | http://eprints.iisc.ac.in/id/eprint/27988 |
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