Structure sensitive bands in the vibrational spectra of metal complexes of tetraphenylporphine |
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| Affiliation: | 1. Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53233, U.S.A.;2. Department of Chemistry, University of Kentucky, Lexington, Kentucky 40506, U.S.A.;1. Department of Solid State Physics, Lesya Ukrainka Eastern European National University, 13 Voli Ave., Lutsk, 43025, Ukraine;2. Department of Inorganic and Physical Chemistry, Lesya Ukrainka Eastern European National University, 13 Voli Ave., Lutsk, 43025, Ukraine;3. Institute of Electronic and Control System, Faculty of Electrical Engineering, Czestochowa University of Technology, Armii Krajowej 17, Czestochowa, Poland;4. Institute of Physics, J. Dlugosz University, Armii Krajowej 13/15, Czestochowa, Poland;1. Department of Chemistry, Science and Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran, Iran;2. Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran;3. Université François Rabelais, Département de Chimie, 32 Avenue Monge, 37200 Tours, France;4. CCC-IPSB, École Polytechnique Fédérale de Lausanne, Le Cubotron, Dorigny, CH-1015 Lausanne, Switzerland;1. Department of Inorganic Chemistry, University of Madras, Guindy Campus, Chennai 600025, India;2. Membrane Laboratory, Department of Chemical Engineering, Anna University, Chennai 600025, India |
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| Abstract: | The i.r. and RR spectra of twenty Fe(TPP)LL′ type complexes have been measured to locate structure-sensitive bands. In i.r. spectra, band I (1350-1330 cm−1) and band III (469-432 cm−1) are spin-state sensitive whereas band II (806-790 cm−1) is oxidation-state sensitive and slightly spin-state sensitive in the Fe(II) state. To examine the nature of these bands, the i.r. spectra of Co(TPP), (Fe(TPP))2O and their d8 and d20 analogs have been measured, and empirical assignments proposed. In RR spectra, band C (1545-1498 cm−1, ap) and band D (1565-1540 cm−1, p) are spin-state sensitive whereas band E (391-376 cm−1, p) is sensitive to both spin and oxidation states. These results on RR spectra are in good agreement with those of previous workers. |
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