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KMID : 1059519950390070501
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Journal of the Korean Chemical Society
1995 Volume.39 No. 7 p.501 ~ p.507
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Electronic Structure and Chemical Reactivity of Transition Metal Complexes (Part 16). A Spectroscopic Study on the Electronic Structure of cis-[Cr(cyclam)Cl2]Cl
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Choi Jong-Ha
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Abstract
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The electronic structure of cis-[Cr(cyclam)Cl2]Cl has been investigated by the emission and excitation spectroscopy at 77K and infrared and visible spectroscopy at room temperature. The ten electronic transitions due to spin-allowed and spin-forbidden are assigned. The zero-phonon line in the excitation spectrum splits into two components by 139cm-1, and it can be reproduced by modern ligand field theory. According to the results of ligand field analysis, we can confirm that nitrogen atoms of the cyclam ligand have a strong σ-donor character, but chloride ligand has weak σ- and π-donor properties toward chromium(Ⅲ) ion.
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