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Supramolecular Copper Phenanthroline Racks: Structures, Mechanistic Insight and Dynamic Nature
Author(s) -
Kalsani Venkateshwarlu,
Bodenstedt Heinrich,
Fenske Dieter,
Schmittel Michael
Publication year - 2005
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.200400899
Subject(s) - chemistry , supramolecular chemistry , coordination complex , phenanthroline , copper , vapor pressure osmometry , ligand (biochemistry) , combinatorial chemistry , crystallography , metal , molecule , organic chemistry , vapor pressure , biochemistry , receptor
Herein, we describe the preparation of several dynamic multicomponent supramolecular racks based on copper phenanthroline complexes using the HETPHEN concept ( het eroleptic bis phen anthroline complexes). This approach employs bulky aryl substituents at the bisimine coordination sites to control the coordination equilibrium. The racks were characterised by spectroscopic methods, both in solution ( 1 H NMR, ESI‐MS, UV/Vis, vapour pressure osmometry) and in the solid state (X‐ray). Ligand exchange studies established the reversible nature of the aggregates, the details of which are vital for the development of higher level multicomponent structures. In this regard, the present rack assemblies contrast to the large multitude of known rack motifs that are almost exclusively built using kinetically inert coordination building blocks. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)