希夫碱钼(Ⅵ)配合物的合成表征与生物活性研究

SYNTHESIS AND CHARACTERIZATION AND BIOACTIVITY OF MOLYBDENUM(Ⅵ) COMPLEXES WITH SCHIFF BASE

用一步法制备了 N-氧化吡啶 -2 -甲醛缩氨基酸系列希夫碱及其钼 ( )配合物 ,并用元素分析、IR、差热 -热重分析等进行了表征 ,结果表明 ,钼 ( )通过与希夫碱的 O(N-氧化吡啶 )、N(希夫碱 )、O(羧基 )原子配位形成稳定的配合物 .生物活性试验表明 :希夫碱对植物发芽有抑制作用 ,配合物则有促进作用 ,亦证明钼( )

Three molybdenum(Ⅵ) complexes with Schiff base derived from 2-picolinaldehyde N-oxide and a series of amino acid were synthesized by one step method and characterized by elemental analysis,IR spectra and thermal analysis.The results showed that molybdenum(Ⅵ) coordinated to the Schiff bases via O(N-oxide pyridine),N(Schiff base) and O(COO-) donors and formed stable complexes.Biological activity tests of the Schiff base and complexes evidenced that Schiff base could inhibit the sprout of green bean,while molybdenum(Ⅵ) complexes could promote it.These facts confirmed that Mo(Ⅵ) was active center.