| Recently, there is an increasely interest on the research of molecular-based material with the development of transitional metal complex as a new type of soft material. Molecular-based magnetic material also known as molecular magnetic material is based on the theory of the action of quantum exchange and may be used as the advanced technical material, especially as information storage material, because of the wider chemical selectivity of molecular-based magnetic material to the traditional magnetic material and designation on the molecular level and the advantage of smaller volume,less energy consume,relative smaller density and variety of structure. Besides, It is becoming the hot topic if chirality known as a character of molecular is introduced to molecular magnetic material to synthesis chiral molecular magnetic material.For the above purpose, selecting proper chiral ligands,metal iron,proper bridge ligand and adjusting the stereo-structure is adopted to get the desired magnetic compounds. The thesis is divided into four chapters as follows:In the first chapter, the review summarizes the research development on the research of the transitional metal complex and molecular magnetic molecular magnetic materials which includes the research background,significance,theory and the common research method.In the second chapter,A new trident chiral ligand, (R) or (S) -1- (pyridin-2-yl) - N- (pyridin-2-ylmethyl) ethanamine ((R) or (S)-MBPA) was synthesized. Its structure and chirality was determined through NMR,MS,ee value and CD spectra. A mononuclear complex of Cobalt(III) was obtained by reaction of Co(ClO4)2?6H2O and the ligand and NaN3.The complex was charactererized by X-ray crystallography. The crystal belongs to monoclinic, space group P2(1)/n, with the crystal cell parameters: a = 8.540(4) ?,b = 12.497(5) ?, c = 1.6297(7) ?,α= 90°,β= 94.521(7)o,γ= 90°.In the third chapter, using a tailored cyanometalate precursor, (Bu4N)[(Tp)Fe(CN)3] (Tp = hydrotris(pyrazolyl)borate; Bu4N+ = tetrabutylammonium cation) as building block and (S) or (R)-MBPA) as chiral ligand two tetranuclear complexes: [(Tp)2FeIII2(CN)6NiII2((S) or (R)-MBPA)2·2C2H5OH·2H2O·2ClO4],[(Tp)2FeIII2(CN)6MnII2(S or R-MBPA)2·ClO4] was synthesized and characterized structurally. Complex [(Tp)2FeIII2(CN)6NiII2((S)–MBPA )2·2 C2H5OH·2 H2O·2ClO4]belongs to monoclinic, space group: Pc, with the crystal cell parameters: a =14.0448(10)?,b =13.1855(10)?, c = 19.7683(15)?,α= 90°,β= 92.1570(10)o,γ= 90°.Complex [(Tp)2FeIII2(CN)6MnII2((S)-MBPA)2·ClO4] belongs to triclinic,space group: P-1,with the crystal cell parameters: a =11.1374(7) ?,b =11.5196(7) ?, c = 14.2007(9) ?,α= 94.003(4)°,β= 90.516(4)o,γ= 108.039(3)°. [(Tp)2FeIII2(CN)6NiII2((S)–MBPA )2·2 C2H5OH·2 H2O·2ClO4] shows ferromagnetic complex property of metamagnetic behavior characterized magnetically.In the forth chapter, using a trinuclear cyanometalate precursor, (Bu4N)[(Tp)Fe(CN)3] as building block and (S,R)-PEA) as chiral ligand a pair of trinuclear chiral complexes: [(Tp)2 FeIII2 (CN)6 NiII((S) -PEA) 2·3H2O],[(Tp)2FeIII2(CN)6NiII( (R)-PEA)2·3H2O] was synthesized and and characterized structurally. Complex [(Tp)2FeIII2(CN)6NiII((S)-PEA)2·3H2O] belongs to orthorhombic,chiral space group:C2221,with the crystal cell parameters: a =27.833(12) ?,b =14.279(7) ?, c = 13.276(6) ?,α= 90°,β= 89.95o,γ= 90°。Complex [(Tp)2 FeIII2 (CN)6 NiII( (R) -PEA)2·4 H2O] belongs to orthorhombic,chiral space group:C2221,with the crystal cell parameters: a =14.343(4) ?,b =27.746(9) (7) ?, c = 13.360(4) ?,α= 90°,β= 90o,γ= 89.95°. [(Tp)2FeIII2(CN)6NiII((S)-PEA)2·3H2O],[(Tp)2 FeIII2 (CN)6 NiII( (R) -PEA)2·4 H2O] are enantisomers by CD spectra determination and [(Tp)2FeIII2(CN)6NiII((S)-PEA)2·3H2O] shows ferromagnetic complex property of metamagnetic behavior characterized magnetically.
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