Vibrational relaxation of carbon monoxide in model heme compounds. 6-coordinate metalloporphyrins (M = Fe, Ru, OS)

Jeffrey R. Hill; Dana D. Dlott; M. D. Fayer; Kristen A. Peterson; Chris W. Rella; Michael M. Rosenblatt; Kenneth S Suslick; Christopher J. Ziegler

doi:10.1016/0009-2614(95)00927-V

Vibrational relaxation of carbon monoxide in model heme compounds. 6-coordinate metalloporphyrins (M = Fe, Ru, OS)

Jeffrey R. Hill, Dana D. Dlott, M. D. Fayer, Kristen A. Peterson, Chris W. Rella, Michael M. Rosenblatt, Kenneth S Suslick, Christopher J. Ziegler

Research output: Contribution to journal › Article

Abstract

Vibrational relaxation of carbon monoxide bound to a series of metalloporphyrin complexes (M-(coproporphyrinate-I tetraisopropyl ester)(CO)(pyridine); M = Fe, Ru, Os) was measured using picosecond infrared pump-probe experiments. The vibrational relaxation rates ((1-2.5) × 10¹⁰ s^-1) increased with increasing mass of the metal ion. This effect is opposite that predicted by through-σ-bond models and is interpreted as arising from a through-π-bond coupling between the CO vibrational fundamental and porphyrin vibrations.

Original language	English (US)
Pages (from-to)	218-223
Number of pages	6
Journal	Chemical Physics Letters
Volume	244
Issue number	3-4
DOIs	https://doi.org/10.1016/0009-2614(95)00927-V
State	Published - Oct 6 1995

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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Hill, J. R., Dlott, D. D., Fayer, M. D., Peterson, K. A., Rella, C. W., Rosenblatt, M. M., Suslick, K. S., & Ziegler, C. J. (1995). Vibrational relaxation of carbon monoxide in model heme compounds. 6-coordinate metalloporphyrins (M = Fe, Ru, OS). Chemical Physics Letters, 244(3-4), 218-223. https://doi.org/10.1016/0009-2614(95)00927-V

Vibrational relaxation of carbon monoxide in model heme compounds. 6-coordinate metalloporphyrins (M = Fe, Ru, OS). / Hill, Jeffrey R.; Dlott, Dana D.; Fayer, M. D.; Peterson, Kristen A.; Rella, Chris W.; Rosenblatt, Michael M.; Suslick, Kenneth S; Ziegler, Christopher J.

In: Chemical Physics Letters, Vol. 244, No. 3-4, 06.10.1995, p. 218-223.

Research output: Contribution to journal › Article

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abstract = "Vibrational relaxation of carbon monoxide bound to a series of metalloporphyrin complexes (M-(coproporphyrinate-I tetraisopropyl ester)(CO)(pyridine); M = Fe, Ru, Os) was measured using picosecond infrared pump-probe experiments. The vibrational relaxation rates ((1-2.5) × 1010 s-1) increased with increasing mass of the metal ion. This effect is opposite that predicted by through-σ-bond models and is interpreted as arising from a through-π-bond coupling between the CO vibrational fundamental and porphyrin vibrations.",

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