X-ray K-absorption spectrum of cobalt in some cobalt complexes |
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Authors: | NV Bhat A Syamal SV Salvi PH Umadikar |
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Institution: | Dept. of Chemical Technology, University of Bombay, Matunga, Bombay 19, India;Institute of Science, M. Cama Road, Bombay 32, India |
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Abstract: | The X-ray K-absorption edge of cobalt in some cobalt (II) and cobalt (III) complexes has been investigated using a 400 mm bent crystal spectrometer. The structure associated with the absorption edge has been used to deduce information regarding the bond lengths, the mode of bonding and the coordination of cobalt in complexes. On the basis of the results obtained, it has been concluded that Co ions are surrounded by distorted octahedra in CoII(Saltn)(H2O)2, CoIII(acac)(Saltn) whereas Co ions in CoII(Salbn) have a tetrahedral structure and Co ions in CoII(SalHn) have pseudotetrahedral structure. All the compounds exhibit slight ionic character. |
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