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VCD Studies on Chiral Characters of Metal Complex Oligomers
Department of Chemistry, Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
Department of Chemistry, Toho University, Funabashi 274-8510, Japan
These authors contributed equally to this work.
* Author to whom correspondence should be addressed.
Received: 11 December 2012; in revised form: 27 December 2012 / Accepted: 31 December 2012 / Published: 7 January 2013
Abstract: The present article reviews the results on the application of vibrational circular dichroism (VCD) spectroscopy to the study of stereochemical properties of chiral metal complexes in solution. The chiral characters reflecting on the vibrational properties of metal complexes are revealed by measurements of a series of β-diketonato complexes with the help of theoretical calculation. Attention is paid to the effects of electronic properties of a central metal ion on vibrational energy levels or low-lying electronic states. The investigation is further extended to the oligomers of β-diketonato complex units. The induction of chiral structures is confirmed by the VCD spectra when chiral inert moieties are connected with labile metal ions. These results have demonstrated how VCD spectroscopy is efficient in revealing the static and dynamic properties of mononuclear and multinuclear chiral metal complexes, which are difficult to clarify by means of other spectroscopes.
Keywords: chiral; multi-nuclear metal complex; vibrational circular dichroism; chiral induction; β-diketonato; tecton; supramolecule; circular dichroism; DFT calculation; catalysis; low-lying electronic states
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Sato, H.; Yamagishi, A. VCD Studies on Chiral Characters of Metal Complex Oligomers. Int. J. Mol. Sci. 2013, 14, 964-978.
Sato H, Yamagishi A. VCD Studies on Chiral Characters of Metal Complex Oligomers. International Journal of Molecular Sciences. 2013; 14(1):964-978.
Sato, Hisako; Yamagishi, Akihiko. 2013. "VCD Studies on Chiral Characters of Metal Complex Oligomers." Int. J. Mol. Sci. 14, no. 1: 964-978.