E. Coropceanu, L. Croitor, M. Botoshansky
Sep 21, 2011
Citations
0
Influential Citations
17
Citations
Journal
Polyhedron
Abstract
The reaction of copper(II) acetate or fluoride with classic dioximes in the presence of 1,2-bis(4-pyridyl)ethane resulted in four novel compounds with the compositions [Cu2(dmgH)4bpe] (1), [Cu2(NioxH)4bpe] (2), [Cu2(dpgH)4bpe] (3), and [Cu2(dpgH)4bpe][Cu(dpgH)2bpe]2·2DMF (4) (where dmgH2 = dimethylglyoxime, NioxH2 = 1,2-cyclohexanedionedioxime, dpgH2 = diphenylglyoxime, bpe = 1,2-bis(4-pyridyl)ethane, and DMF = N,N′-dimethylformamide), whose crystal structures were determined by single crystal X-ray diffraction. In the binuclear molecules 1–3, as well as in both binuclear and mononuclear molecules in 4 each Cu(II) atom has an identical N5-environment formulated by four oximic nitrogen atoms of two monodeprotonated ligands in a slightly distorted square planar mode, and the nitrogen atom of the bpe molecule being in the apical position. The new compounds were characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Luminescence investigations for 1, 2 and 4 were carried out to clarify whether the guest inclusion in the crystal lattice is accompanied by changes in the emission spectra.