Crossref journal-article
Wiley
Journal of Raman Spectroscopy (311)
Abstract

AbstractNon‐planar conformational distortions have recently been implicated in the biological activity of porphyrins and related tetrapyrroles in proteins, and several studies have used highly substituted porphyrins to model these nonplanar conformational distortions. Several aspects of non‐planarity in the highly substituted metalloporphyrins are discussed, focusing on resonance Raman spectroscopy as a technique for investigating these structural issues. First, different non‐planar distortions cause characteristic changes in the Raman spectrum. Specifically, the decreases in frequency of several Raman lines when compared with planar porphyrin analogs are shown to be similar for several classes of non‐planar highly substituted porphyrins. Second, the effect of the central metal ion [ M = Ni(II), Co(II), Cu(II), Zn(II), Co(III), Fe(III)] on the conformation of the sterically constrained non‐planar porphyrin octaethyltetraphenylporphyrin is considered. Responding to the conformational adjustments resulting from different metal size, the frequency of the structure‐sensitive Raman line v2 correlates with several structural parameters obtained from either mechanics calculations or crystallographic studies. The parameters include CβCβ bond length, core size and CαNCα angle. Finally, an effect of electron‐withdrawing substituents on the Raman frequencies is evident for the different classes of highly substituted porphyrins.

Bibliography

Shelnutt, J. A., Majumder, S. A., Sparks, L. D., Hobbs, J. D., Medforth, C. J., Senge, M. O., Smith, K. M., Miura, M., Luo, L., & Quirke, J. M. E. (1992). Resonance Raman spectroscopy of non‐planar nickel porphyrins. Journal of Raman Spectroscopy, 23(10), 523–529. Portico.

Authors 10
  1. J. A. Shelnutt (first)
  2. S. A. Majumder (additional)
  3. L. D. Sparks (additional)
  4. J. D. Hobbs (additional)
  5. C. J. Medforth (additional)
  6. M. O. Senge (additional)
  7. K. M. Smith (additional)
  8. M. Miura (additional)
  9. L. Luo (additional)
  10. J. M. E. Quirke (additional)
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Dates
Type When
Created 20 years, 2 months ago (May 28, 2005, 3:52 p.m.)
Deposited 1 year, 10 months ago (Oct. 23, 2023, 5:11 p.m.)
Indexed 2 months, 3 weeks ago (June 5, 2025, 7:47 a.m.)
Issued 32 years, 10 months ago (Oct. 1, 1992)
Published 32 years, 10 months ago (Oct. 1, 1992)
Published Online 20 years, 4 months ago (April 12, 2005)
Published Print 32 years, 10 months ago (Oct. 1, 1992)
Funders 0

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@article{Shelnutt_1992, title={Resonance Raman spectroscopy of non‐planar nickel porphyrins}, volume={23}, ISSN={1097-4555}, url={http://dx.doi.org/10.1002/jrs.1250231004}, DOI={10.1002/jrs.1250231004}, number={10}, journal={Journal of Raman Spectroscopy}, publisher={Wiley}, author={Shelnutt, J. A. and Majumder, S. A. and Sparks, L. D. and Hobbs, J. D. and Medforth, C. J. and Senge, M. O. and Smith, K. M. and Miura, M. and Luo, L. and Quirke, J. M. E.}, year={1992}, month=oct, pages={523–529} }