Two tricyclohexyltin aryloxyacetates (C1, C2) have been synthesized by the reaction of tricyclohexyltin hydroxide with 1,3-phenylenedioxydiacetic acid (L1) or 3-(N,N'-dicarboxymethyl)aminophenoxyacetic acid (L2), respectively. The structures were characterized by elemental analyses, IR, H-1, C-13 NMR, and X-ray diffraction. The structure of complex C1 has been previously reported, C2 is a novel complex. The results of thermal stability analysis confirmed that the two complexes contain solvent molecules, so they can only exist stably below 70(o)C. The results of herbicidal activity showed that C1 and C2 had moderate growth regulation effects on Alfalfa.
Chinese Journal of Structural Chemistry,2021年40(12):1639-1646 ISSN：0254-5861
Key Laboratory of Functional Metal-organic Compounds of Hunan Province,Key Laboratory of Functional Organometallic Materials of College of Hunan Province,Department of Chemistry and Material Science,Hengyang Normal University,Hengyang,Hunan 421008,China;[FENG Yong-Lan; ZHANG Fu-Xing; KUANG Dai-Zhi; JIANG Wu-Jiu] 湖南省高等专科学校
A series of dibutyltin complexes,(Bu_2Sn)_2L, [(Bu_2Sn)_2L]_3 and H_2LSnBu_2, were synthesized by microwave-assisted methanolic solvothermal method, where H_4L is [2-(OH)-R-ArCH=NNH]_2CX, and X = O, R = 4-NEt_2(T1),5-Br(T2);X = S, R = H(T3);R = 5-Br(T4).Their structures were characterized by elemental analysis, IR and(~1H, ~(13)C)-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(Bu_2Sn)_2L with enol imines.The T2 and T4 exhibit fluorescence emission in DMF solvents and DMF-water mixture.The fluorescence intensity of T2-DMF-H_2O system decreases almost linearly with the increase of water volume fraction(WVF).The aggregation fluorescence enhancement effect of T4-DMF-H_2O 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.