期刊
INORGANICA CHIMICA ACTA
卷 362, 期 1, 页码 117-124出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2008.03.128
关键词
Salen-type ligand; Transition metal complex; Synthesis; Crystal structure; Properties
资金
- Foundation of the Education Department of Gansu Province [0604-01]
- Lanzhou Jiaotong University [QL03-01A]
Three new supramolecular complexes, [Cu(L-1)H2O](n) (1), [Zn(L-2)(H2O)(2)](n) (2), and [Cd(L-2)(H2O)(2)](n) (3), have been synthesized and characterized by FT-IR spectra, fluorescence spectra, and thermal analyses. And the structures of complexes 1-3 have been elucidated by X-ray analyses. Complex 1 is square pyramidal geometry with an unusually long bond (2.262 angstrom) from penta-coodinated Cu-II center to the oxygen atom of the apical coordinated water molecule. Molecules are linked by hydrogen bonding between the coordinated water and the phenolic oxygen atoms of adjacent molecules, thus formed a self-assembling continual zigzag chain supramolecular structure. The crystal structure of complex 2 (or 3) has indicated that the complex consists of one Zn-II (or Cd-II) atom, one L-2 unit and two coordinated water molecules, the coordination number of the Zn-II (or Cd-II) atom is six, and formed an infinite metal-water chain supramolecular structure by intermolecular hydrogen bonds and pi-pi stacking of neighboring benzene rings. Meanwhile, the thermal and photophysical properties of the resulted complexes have also been discussed. (c) 2008 Elsevier B.V. All rights reserved.
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