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Adventures in the Coordination Chemistry of Di‐2‐pyridyl Ketone and Related Ligands: From High‐Spin Molecules and Single‐Molecule Magnets to Coordination Polymers, and from Structural Aesthetics to an Exciting New Reactivity Chemistry of Coordinated Ligands
Author(s) -
Stamatatos Theocharis C.,
Efthymiou Constantinos G.,
Stoumpos Constantinos C.,
Perlepes Spyros P.
Publication year - 2009
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900223
Subject(s) - chemistry , coordination complex , ligand (biochemistry) , molecule , deprotonation , ketone , organometallic chemistry , coordination sphere , metal , stereochemistry , crystallography , organic chemistry , crystal structure , ion , biochemistry , receptor
The coordination chemistry of di‐2‐pyridyl ketone and related ligands is reviewed. An outline of the variety of such ligands is presented. References are given to methods for the synthesis of ligands that are not available on the market. The activation of the carbonyl group(s) of some of the ligands towards further reactions seems to be an emergent area of synthetic inorganic chemistry. The coordination chemistry of each ligand with metals is briefly described. Emphasis is placed on structural features and physical properties (mainly magnetic) of the resulting metal clusters and coordination polymers. The structural diversity of the complexes stems from the ability of the deprotonated diol‐ or hemiketal‐type ligands to adopt a variety of bridging coordination modes depending on the number of carbonyl groups, the nature of the extra donor groups in the molecule and on the reaction conditions. Employment of a second organic or inorganic ligand in this chemistry gives an extraordinary structural flexibility in the resulting mixed‐ligand systems. The initial use of 1,1′‐carbonyldiimidazole and 1,1′‐oxalyldiimidazole in copper(II) chemistry, which leads to unprecedented coordination polymers containing alcoholysis and/or hydrolysis “fragments” of the ligands, is also illustrated. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)