Bond analyses of borates from the Inorganic Crystal Structure Database

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Abstract

Various fundamental building blocks (FBBs) are observed in the crystallographic structures of oxoborates available in the Inorganic Crystal Structure Database, Version 1.3.3 (2004); the occurrence of borate groups with low complexity is dominant. Bond-valence parameters do of B-O bonds in 758 oxoborates with various FBBs have been calculated using the bond-valence sum model. Some discrepancies in the do values obviously occur if the detailed configurations of FBBs in borate crystals are considered; d0 is sensitive to the chemical bonding structure of B atoms in the crystallographic framework. Moreover, d0 values are affected by the existence of interstitial atoms and the substitution of other anionic groups. In addition, the d0 parameters for B-N, B-S, B-P and B-F bonds are also calculated statistically. Some suitable d0 data for various borate FBBs are recommended according to their particular configurations, especially for those with low complexity. On the basis of the proposed linear relationship between calculated nonlinear optical (NLO) coefficients of borates and the current d0 values for various FBBs, it is found that the d 0 values may be regarded as a useful parameter for pre-investigating the NLO properties of borates, leading to an efficient structural evaluation and design of novel borates. © 2006 International Union of Crystallography Printed in Great Britain - all rights reserved.

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Yu, D., & Xue, D. (2006). Bond analyses of borates from the Inorganic Crystal Structure Database. Acta Crystallographica Section B: Structural Science, 62(5), 702–709. https://doi.org/10.1107/S0108768106018520

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