Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/3862
Title: Synthesis, spectroscopic and X-Ray structural characterization of ternary complexes of Copper (II) and 2,5-dimethoxycinnamic acid with phenanthrolines
Authors: BATTAGLIA L., P
BONAMARTINI CORRADI, A
ZORODDU M., A
Manca, G
Basosi, Riccardo 
Solinas, C.
Issue Date: 1991
Project: None 
Journal: JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS
Abstract: 
The complexes [Cu(dmc)2L][Hdmc = 2,5-dimethoxycinnamic acid; L = 1,10-phenanthroline (phen), 4,7-dimethyl-1,10-phenanthroline (4,7-dmphen) or 2,9-dimethyl-1,10-phenanthroline (2,9-dmphen)] were synthesised and characterized by magnetic measurements, EPR and reflectance electronic spectroscopy. The crystal structure of [Cu(dmc)2(2,9-dmphen)] has been determined by X-ray diffraction: it consists of discrete units [Cu(dmc)2(2,9-dmphen)] in which a very asymmetric CuN2O2O′2 chromophore is present with the two nitrogen atoms from 2,9-dmphen nearly symmetrically chelated [Cu–N 1.988(4) and 2.045(3)Å], two carboxylic oxygens of a bidentate dmc molecule [Cu–O 1.979(3) and 2.242(3)Å], and the oxygen atom of a monodentate carboxylic acid group of a second dmc molecule. Copper deviates from the 2,9-dmphen plane by 0.1811(7)Å and the carboxylic acid groups lie on planes roughly orthogonal [92.1(3)°]; the second carboxylic oxygen of the monodentate dmc molecule is involved in a long contact with the metal [Cu O 2.959(4)Å].
Description: 
19199
URI: http://hdl.handle.net/20.500.12779/3862
ISSN: 0300-9246
DOI: 10.1039/DT9910002109
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