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Comparative Study of Reactivity of Copper(II) Salts with N,N′‐Dipyridyl Ligands. Structural Diversity and Magnetic Properties
Author(s) -
Delgado S.,
Medina M. E.,
Pastor C.J.,
JiménezAparicio R.,
Priego J. L.
Publication year - 2007
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200700229
Subject(s) - chemistry , ligand (biochemistry) , reactivity (psychology) , copper , metal , thiophene , stereochemistry , crystal structure , coordination polymer , molecule , crystallography , medicinal chemistry , organic chemistry , receptor , medicine , biochemistry , alternative medicine , pathology
The coordination chemistry of 1,2‐bis(2‐pyridyl)butadiyne (dpb) 2,5‐bis(2‐pyridylethynyl)thiophene (dpet) (rigid ligands) and 4,4′‐dipyridyldisulfide (4‐dpds) (flexible ligand) with Cu(tfac) 2 (tfac= trifluoroacetylacetonate) and Cu(BF 4 )·xH 2 O have been investigated in order to test the influence of different anions on the overall structure. Three of the resulting metal‐organic assemblies have been determined. These crystal structures have shown that the geometry and coordinating properties of the corresponding anions together with the positional orientation of the nitrogen atoms in the ligands are essential in determining the final structures of the assemblies. So, reactions with Cu(tfac) 2 lead to dimeric compounds [Cu 2 (tfac) 4 (L)] for L = dpb 1 and dpet 2 and one‐dimensional polymer [Cu(tfac) 2 (4‐dpds)] n ( 3 ) for 4‐dpds ligand. On the other hand analogous reactions with Cu(BF 4 )·xH 2 O afforded the copper(II) complexes [Cu(dpb)(BF 4 ) 2 ·(CH 3 OH) 1.5 ] n ( 4 ) and [Cu(4‐dpds) 2 /(BF 4 ) 2 (MeOH)(CH 2 Cl 2 )] n ( 6 ) for dpb and 4‐dpds ligands as well as the copper(I) compound [Cu(dpet) 2 ] n (BF 4 )·CH 2 Cl 2 ( 5 ) for dpet ligand. In addition to this, magnetic properties have been studied.