Premium
Solution structure of porphyrin aggregates determined by 1 H NMR ring current shifts. I. Heterodimers of oppositely charged porphyrins
Author(s) -
Hofstra U.,
Koehorst R. B. M.,
Schaafsma T. J.
Publication year - 1987
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260251210
Subject(s) - porphyrin , chemistry , tetra , ring (chemistry) , aryl , monomer , crystallography , proton nmr , metal , stereochemistry , medicinal chemistry , photochemistry , organic chemistry , polymer , alkyl
Abstract The solution structures of dimers consisting of negatively charged Zn[tetra(4‐carboxyphenyl)porphyrin], ZnTPPC, with positively charged Zn[tetra(4‐ N ‐methylpyridyl)porphyrin], ZnTMPyP, and with H 2 [tetra(4‐ N ‐methylpyridyl)porphyrin], H 2 TMPyP, were determined by 1 H NMR ring current shifts. The conformation is not affected by the presence of the metal in the centre of the TMPyP monomer. The dimers have a cofacial conformation with a plane‐to‐plane separation of 3.1 Å and an in‐plane translation of 4.2 Å along the aryl—aryl axis.