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Design of New Structural Types from Oxocentered Tetrahedra : Continuous Polycationic Series from 1D Chains to 2D Planes in New Bismuth Compounds
Published online by Cambridge University Press: 26 February 2011
Abstract
In the Bi2O3-MO-P2O5 diagrams, most of the inorganic frameworks display Bi-M-O polycationic ribbons isolated by XO4 groups and interstitial cationic channels. They are formed of edge sharing O(Bi,M)4 tetrahedra. The width of the ribbons coexisting in the structures and their arrangement is changed from one compound to the next one. Due to mixed Bi3+/M2+ particular positions, a great chemical flexibility and a great degree of disorder may exist. It has been possible to extend ribbons to infinite [Bi2O2]2+ like sheets, sandwiched between XO4 based layers. In addition to this fascinating continuous polymerization from 1D chains to 2D sheets, O(Bi,M)4 and XO4 groups form ideal structural units for the designing of new materials through empirical structural rules that has been established.
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- Copyright © Materials Research Society 2007