Solid state N and C NMR study of dioxomolybdenum (VI) complexes of Schiff bases derived from trans-1,2-cyclohexanediamine |
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Authors: | W Schilf B Kamie
ski Z Rozwadowski K Ambroziak B Bieg T Dziembowska |
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Institution: | W. Schilf, B. Kamie
ski, Z. Rozwadowski, K. Ambroziak, B. Bieg,T. Dziembowska, |
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Abstract: | The 13C, 15N CP MAS NMR and FT-IR spectra of dioxomolybdenum (VI) complexes of trans-N,N′-bis-(R-salicylidene)-1,2-cyclohexanediamine (R=H, R=3,5-diCl, R=3,5-diBr, R=4,6-diOCH3), trans-N,N′-bis-(2-OH-naphthylidene)-1,2-cyclohexanediamine and trans-N-(salicylidene)-N′-(2-OH-naphthylidene)-1,2-cyclohexanediamine have been measured. Comparative analysis of the NMR and IR spectra of the complexes with those of the corresponding ligands has shown that the complexation of the di-Schiff bases leads to changes in the conformation of the ligands and the charge redistribution. The asymmetric structure and non-planar structure of the complexes have been suggested. |
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Keywords: | Schiff bases Mo (VI) complexes 13C 15N CP MAS NMR |
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