Synthesis and X-Ray Diffraction Studies of Chiral Nickel(II),Zinc(II),Manganese(II),and Cobalt(II)Complexes with C2-symmetric 2,6-bis[4'-(R)-ethoxyoxazolin-2'-yl]pyridine

摘要

Chiral nickel(II),zinc(II),manganese(II),and cobalt(II)complexes with C2-symmetric 2.6-bis[4'-(R)-ethoxyoxazolin-2'-yl]pyridine were prepared,the single crystal of nickel(II)complex,[Ni((fl,.K)-Et-Py-box)(H2O)2Cl]Cl ((R,R)-Et-Pybox is 2,6-bis[4'-(R)-ethoxyoxazolin-2'-yl]pyridine),was obtained and indicated by X-ray diffraction analysis.The nickel(II)complex crystallizes in the orfhorhombic system,space group P2_12_12_1 with a =7.7346(4)A,b =19.7133(13)A,c =25.8014(14)A,V=3934.1(4)A3,Z =8,and R =0.0526 against 7010 reflections with I >2 sigma (I).A feature of interest was noted in the unit cell of the compound,where two types of molecules exist,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.