1. Three [CuL2] Type Complexes with Halogen-Substituted Schiff Base Ligands Containing a Pyridine Group.
- Author
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Dong, Wen-Kui, Tong, Jun-Feng, Sun, Yin-Xia, Gong, Shang-Sheng, and Li, Li
- Subjects
COPPER compounds ,COMPLEX compounds ,HALOGEN compounds ,SUBSTITUTION reactions ,SCHIFF bases ,LIGANDS (Chemistry) ,PYRIDINE ,MOLECULAR structure - Abstract
Three mononuclear Schiff base copper(II) complexes, [Cu(L1)2] (1), [Cu(L2)2] (2) and [Cu(L3)2] (3) (HL1= 2,4-dichloro-6-[(2-chloro-3-pyridyl)iminomethyl]phenol, HL2 = 2,4-dibromo-6-[(2-chloro-3-pyridyl)-iminomethyl]phenol, HL3 = 2-bromo-4-chloro-6-[(2-chloro-3-pyridyl)iminomethyl]phenol), have been synthesized and characterized by elemental analyses, IR, UV-Vis spectra, and X-ray single crystal diffraction. X-ray structures reveal each crystal unit contains two molecules and the coordination environment around the copper(II) atom is tetracoordinated by two Schiff base ligands, showing a tetrahedron geometry with some distortion. Pairs of intermolecular C-H···X (X = Cl or Br), C-H···N and C-H···O hydrogen bonds form many hydrogen bonding rings and play a crucial role in stabilizing the crystal structures. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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