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A homochiral complex,Ni 2 (salen) 2 (1,salen=(R,R)-(-)-N,N-bis(3-tert-butyl-5-(4ethynylpyridyl)salicyl-idene)-1,2-diaminocyclohexane),has been synthesized and characterized by IR,microanalysis,CD spectra,TGA,powder and single-crystal X-ray crystallography