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Crystallographic and infrared spectroscopic study of bond distances in Ln[Fe(CN)6]·4H2O (Ln=lanthanide) |
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| Authors: | Xianju Zhou Wing-Tak Wong Peter A Tanner |
| Institution: | a Institute of Modern Physics, Chongqing University of Post and Telecommunications, Chongqing 400065, PR China b Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR, PR China c Department of Chemistry, The University of Hong Kong, Pokfulam Road, Pokfulam, Hong Kong SAR, PR China d 308 Passage de la Creusaz, 74500 Neuvecelle, France |
| Abstract: | Along with crystallographic data of LnFe(CN)6]·4H2O (Ln=lanthanide), the infrared spectra are reassigned to examine bond length trends across the series of Ln. The changes in mean Ln-O, Ln-N, C N and Fe-C distances are discussed and the bond natures of Ln-N and Ln-O are studied by bond length linear or quadratic fitting and comparisons with relevant ionic radii. The two different CN bond distances have been simulated by the covalo-electrostatic model. |
| Keywords: | Bond distance Lanthanide contraction Infrared spectra Crystal structure Covalo-electrostatic model |
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