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American Chemical Society, Inorganic Chemistry, 6(36), p. 1149-1163, 1997

DOI: 10.1021/ic961156w

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Comparative Analysis of the Conformations of Symmetrically and Asymmetrically Deca- and Undecasubstituted Porphyrins Bearing Meso-Alkyl or -Aryl Groups

Journal article published in 1997 by Mathias O. Senge ORCID, Craig J. Medforth, Timothy P. Forsyth, David A. Lee, Marilyn M. Olmstead, Walter Jentzen, Ravindra K. Pandey, John A. Shelnutt, Kevin M. Smith ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Sterically crowded decasubstituted free-base porphyrins with two meso-aryl substituents show negligible out-of-plane distortion but a large amount of in-plane distortion, with the corresponding nickel(II) complexes having either planar or modestly nonplanar conformations. In contrast, nickel(II) complexes of 5,15-diethyl-substituted porphyrins show very ruffled conformations, even though the corresponding free-base porphyrins are also essentially planar. Spectroscopic studies confirm that these conformational differences are retained in solution.