期刊
INORGANICA CHIMICA ACTA
卷 390, 期 -, 页码 53-60出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2012.03.044
关键词
Heteronuclear Cu(II)/Na(I); Compartmental Schiff base; H-bonded architecture; Cyclic voltammetry
资金
- CSIR, India [09/096(0607)/2010-EMR-I, 09/096(0659)/2010-EMR-I]
- University Grants Commission, CAS-UGC, New Delhi
Three heteronuclear Cu(II)/Na(I) compounds, [Cu(vanpn)Na(NO3)(H2O)] (1), [Cu(vanpn)Na(N-3)(CH3OH)] (2) and [Cu(vanpn)Na(NCS)(H2O)] (3) where H(2)vanpn = N,N'-(1,3-propylene)-bis(3-methoxysalicylideneimine), a well known compartmental Schiff base ligand, have been prepared and characterized by elemental analysis, IR and UV-Vis spectroscopy and single crystal X-ray diffraction studies. Compound 1 crystallises in monoclinic space group P2(1)/n, compound 2 in triclinic P (1) over bar and compound 3 in orthorhombic space group Pbca. In all the compounds, Cu atoms assume distorted square planar geometries whereas Na atoms exhibit distorted octahedral geometry. In compound 1, the nitrate ion is coordinated as a chelating ligand and essentially both the O atoms of the nitrate occupy one axial site. Variation of the counter anions leads to considerable change in the H-bonded supramolecular structures of the compounds. Compound 1 forms a dimer, compound 2 constitutes a chain and compound 3 forms a helix. Electrochemical electron transfer study reveals Cu(II) Cu(I) reduction in acetonitrile solution. (C) 2012 Elsevier B.V. All rights reserved.
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