Polarized absorption spectra and polarized Raman spectra of single crystals of trans(Cl2)-[CoCl2(NH3)n(H2O)4−n]Cl complexes (n = 2, 3, 4) |
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| Authors: | Yoshihiro Mitsutsuka Hisao Hidaka Masamichi Tsuboi Nick Serpone |
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| Affiliation: | aDepartment of Chemistry, Meisei University, 2-1-1 Hodokubo, Hino, Tokyo 1918506, Japan;bSchool of Science and Engineering, Iwaki-Meisei University, 5-5-1 Chuodai-Iino, Iwaki, Fukushima 9708551, Japan;cDipartimento di Chimica Organica, Universita di Pavia, via Taramelli 10, Pavia 27100, Italy |
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| Abstract: | The title cobalt(III) complexes have been investigated by polarized absorption and Raman spectroscopies of the single crystals. The symmetry properties of the d-electron orbitals and of the vibrational modes attributable to the Raman bands of trans(Cl2)-[CoCl2(NH3)n(H2O)4−n]Cl complexes (n = 2, 3, or 4) were examined to elucidated the peculiar observation that ligand substitution causes no splitting of the 15 200-cm−1 absorption band and the 250-cm−1 Raman band. Effects of replacing the NH3 ligand with H2O on the electronic structure, atom–atom force constants and vibrational modes of these complex ions are briefly described. |
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