【摘 要】
：
A series of dibutyltin complexes,(Bu2Sn)2L,[(Bu2Sn)2L]3 and H2LSnBu2,were synthesized by microwave-assisted methanolic solvothermal method,where H-4L is[2-(OH)-R-ArCH=NNH]2CX,and X =O,R =4-NEt2 (T1),5-Br (T2);X =S,R =H (T3);R =5-Br (T4).Their structures w
【机 构】
：
Key Laboratory of Functional Metal-organic Compounds of Hunan Province,Key Laboratory of Functional
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A series of dibutyltin complexes,(Bu2Sn)2L,[(Bu2Sn)2L]3 and H2LSnBu2,were synthesized by microwave-assisted methanolic solvothermal method,where H-4L is[2-(OH)-R-ArCH=NNH]2CX,and X =O,R =4-NEt2 (T1),5-Br (T2);X =S,R =H (T3);R =5-Br (T4).Their structures were characterized by elemental analysis,IR and (1H,13C)-NMR spectra.The molecular structure of T2 was confirmed by X-ray diffraction.The crystal of T2 belongs to monoclinic system,space group Ia.Five-coordinated distorted triangular bipyramids and six-coordinated distorted octahedral configurations were formed by the coordination of oxygen and nitrogen atoms of ligand with two dibutyltins,thus forming a trimeric hexanuclear butyltin complex by the cross coordination of three units (Bu2Sn)2L with enol imines.The T2 and T4 exhibit fluorescence emission in DMF solvents and DMF-water mixture.The fluorescence intensity of T2-DMF-H2O system decreases almost linearly with the increase of water volume fraction (WVF).The aggregation fluorescence enhancement effect of T4-DMF-H2O solution system increases with the increase of WVF at the range of 0～20％ WVF.When WVF is more than 20％,the fluorescence intensity decreases with the increase of WVF.In addition,T1～T4 have broad growth activities on target plants,such as Portulaca oleracea L.,Amaranthus spinosus L.,Cassia tora L.,Brassica campestris L.ssp.chinensis var.utilis Tsen et Lee,and Amaranthus tricolor L.,and can be used as a candidate herbicide for further research.
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