Heirtzler, F. and Dias, S. and Neuburger, M. (2004) Dimeric metallo-organic supramolecular quinoxaline stacking synthons. European Journal of Inorganic Chemistry (4). pp. 685-688. ISSN 1434-1948.
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Condensation of ortho-phenylene diamines with an unsymmetrical 2,6'-bipyridyl-2"-pyridyl alpha-diketone (2) affords helical ligands 3a and 3b that self-assemble in the presence of copper(i) to produce the helical, dimeric metallo-organic complexes [3a(2)Cu(2)][PF6](2) and [3b(2)Cu(2)][PF6](2). These complexes have a flat, double-decker-like structure that results from atopomeric twisting in the ligand scaffolding, as confirmed by X-ray crystal structural analysis on [3a(2)Cu(2)][PF6](2). This study also indicates a close parallel between the distances involved in inter- and intramolecular stacking phenomena. Detailed NMR spectroscopic analysis of both complexes indicates that their dications possess very closely related solution-state structures. Achieving this self-assembly program is an important step towards realizing dimerically self-assembled metallo-organic materials that have a discotic alignment.
|Additional information:||30 WILEY-V C H VERLAG GMBH 779QR|
|Uncontrolled keywords:||supramolecular chemistry; helical structures; heterocycles; stacking interactions; self-assembly; sandwich complexes|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences|
|Depositing User:||Maggie Francis|
|Date Deposited:||24 Sep 2008 15:52|
|Last Modified:||14 Jan 2010 14:44|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/11350 (The current URI for this page, for reference purposes)|
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