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Synthesis, Structure, and Complexation Properties of Partially and Completely Reduced meso ‐Octamethylporphyrinogens (Calix[4]pyrroles)
Author(s) -
Blangy Valeria,
Heiss Christoph,
Khlebnikov Vsevolod,
Letondor Christophe,
StoeckliEvans Helen,
Neier Reinhard
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200804937
Subject(s) - counterion , chemistry , nickel , hydrogen bond , palladium , ligand (biochemistry) , copper , transition metal , metal , crystallography , stereochemistry , ion , molecule , polymer chemistry , organic chemistry , catalysis , receptor , biochemistry
New tricks for an old dog : Calixpyrroles bind anions efficiently and can be transformed into transition‐metal complexes only under forcing conditions. Reducing the macrocycle creates a ligand that easily forms classical Werner complexes with copper, nickel, and palladium ions. The metal complexes present an array of four directed hydrogen bonds, which specifically bind the counterions (see picture; blue N, white H, green Cl, red Cu, Ni, or Pd).