| Chirality is an important property of chiral molecules. The chiral schiff base ligands and the corresponding complexes of schiff bases are rather important of their various structures and extensive applying in the field of catalysis,bioactivity and material etc. The design and synthesis of molecular materials with optical activity and magnetic properties, the so-called chiral magnets or chiral magnetic materials, has been one of the major challenges in this field, since they might be used as new devices, such as information storage, switching materials. Therefore,we designed and synthesized some new chiral schiff based lignads and their complexes of transiton metal in this paper.The main work is described as follows:1. Three chiral ligands(MMPP, PEMP,L-HisPA) have been designed and synthesized.2. Two chiral Zn2+ complexes, [Zn2(R-MMPP)3]·ClO4 (1),[Zn2(S-MMPP)3]·ClO4 (2), and two chiral Cd2+ complexes, [Cdm(R-MMPP)n]·xClO4(3),[Cdm(S-MMPP)n]·xClO4(4) have been designed and synthesized. The products were analyzed by IR, their properties of complexes have been studied by CD, TGA, SHG and XRF. Crystal structures of Zn2+ and Cd2+ complexes have been determined by X-ray single-crystal susceptibility measurements. Fluorescence spectra measurements show that there is a strong fluorescence emission at 492.5 nm using 392nm excitation light for complex(1), and at 501.5 nm using 339 nm excitation light for complexes (4).Because complexes (1)and (2)are a pair of enantiomers, they show the same Fluorescence spectra, (3)and (4)are a pair of enantiomers, they also show the same Fluorescence spectra.3. Four Cu2+ complexes, [Cu2(R-MMPP)2(N3)2](5), [Cu2(S-MMPP)2(N3)2](6), [Cu2(R-PEMP)2(N3)2](7),[Cu2(S-PEMP)2(N3)2](8), have been designed and synthesized. The products were analyzed by IR.Crystal structures of Cu2+ complexes have been determined by X-ray single-crystal susceptibility measurements. Magnetic susceptibility measurements for complexes (5),(6),(7)and (8)were obtained on the Quantum Design MPMS-XL7 SQUID magnetometer at temperatures ranging from 1.8 to 300 K. Because complexes (5)and (6),(7)and (8)are the same kind of complexes , they show the same magnetic behavior. The figures indicate the presence of antiferromagnetic coupling between the neighboring azide-bridged CuII ions in complexes (5),(6),(7)and (8).4.Two chiral Mn2+ complexes, Mn(R-MMPP)2·ClO4(9),Mn(S-MMPP)2·ClO4(10),and two chiral Co2+ complexes, Co(S-MMPP)2·ClO4(11),Co(L-HisPA)2]·2(ClO4)·4(CH3OH)(12), have been designed and synthesized. The products were analyzed by IR. Crystal structures of Mn2+ and Co2+ complexes have been determined by X-ray single-crystal structure measurements.
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