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Models for the Photosynthetic Reaction Center—Synthesis and Structure of Porphyrin Dimers with cis ‐ and trans ‐Ethene and Skewed Hydroxymethylene Bridges
Author(s) -
Senge Mathias O.,
Gerzevske Kevin R.,
Vicente M. Graça H.,
Forsyth Timothy P.,
Smith Kevin M.
Publication year - 1993
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199307501
Subject(s) - porphyrin , dimer , photosynthetic reaction centre , chemistry , bridging (networking) , photochemistry , stereochemistry , crystallography , organic chemistry , computer network , electron transfer , computer science
TiCl 3 ‐induced coupling of meso ‐forrnylporphyrins provides cofacial porphyrin dimers such as 1 (M Cu, Ni) with bridging cis‐CHCH units. These compounds show strong interactions between the porphyrin rings; in the case of M Ni, the dimer can be easily transformed into the corresponding trans isomer. Similar reactions with β‐formyl‐porphyrins lead to a third type of dimer, a skewed hydroxymethylene‐bridged bisporphyrin. These dimeric compounds are models for the photosynthetic reaction center and should facilitate studies on the influence of the dimer geometry on the photophysical properties.