Three chiral complexes: [M((R, R)-et-pybox)Cl2] (M=Zn, 1, and Mn, 2) and [Ni((R, R)-et-pybox)(H2O)2Cl]Cl (3) ((R, R)-et-pybox is C2-symmetric 2,6-bis[4′-(R)-ethoxyoxazolin-2′-yl]pyridine) have been synthesized and characterized by elemental analysis, IR, UV, TG and single-crystal X-ray diffraction. Single-crystal X-ray diffraction analyses show that 1 is isostructural to 2, the obtained complexes are of isolated mononuclear and the metal atoms of 1 and 2 have distorted trigonal bipyramidal coordination environment. A feature of interest is noted in the unit cell of 3, there exist two types of molecules, which similarly have a distorted octahedral geometry but only slightly differ in the orientation of the coordinated atoms to the central Ni atom. These two types of molecules interact with each other by O–H···Cl hydrogen bonds, giving rise to one-dimensional ribbon structure.
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We are grateful to the Natural Science Foundation of China (No. 20371039), the National Basic Research Program (the 973 Program, No. 2003CB214600), the Key Laboratory Research and Establishment Program of Shaanxi Education Section (No. 03JS006), and the Natural Science Foundation of Shaanxi Education Section (No. 04JK143) for financial support.
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Li, J., Zhao, J. Syntheses, crystal structures and spectral properties of three chiral complexes [M((R, R)-et-pybox)Cl2] (M=Zn and Mn) and [Ni((R, R)-et-pybox)(H2O)2Cl]Cl. Struct Chem 17, 617–622 (2006). https://doi.org/10.1007/s11224-006-9108-z
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DOI: https://doi.org/10.1007/s11224-006-9108-z