Title

Comparative Studies on Copper(I) Complexes: Synthesis, X-ray Crystallography and Electrochemical Properties of [CuI(dafone)nX] Complexes (dafone=4,5-diaza-fluoren-9-one, X=Br, I, SCN)

Abstract

The synthesis, X-ray structures and electrochemical properties of stable five-coordinate, trigonal-bipyramidal CuI complexes of dafone (4,5-diaza-fluoren-9-one) [Cu(dafone)2X] with X=Br (1) or I (2) as ancillary ligands are discussed. The thiocyanate-bridged polymeric CuI complex of dafone, [Cu(dafone)(SCN)]n (3), forms two-dimensional sheets in the crystal, held together by weak interactions involving the dafone ketone group, while the phenanthroline complex, [Cu(phen)(SCN)]n (4), a zigzag arrangement of the phen ligands leads to interchain π-stacking within the lattice. The electrochemical studies reveal that dafone stabilizes the CuI oxidation state more efficiently than phen due to its better π-acceptor ability as indicated by more positive redox potentials for the CuI/CuII couple. © 2002 Published by Elsevier Science B.V.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2002 Elsevier, All rights reserved.


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