摘要：
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.
期刊：
Chinese Journal of Structural Chemistry,2021年40(12):1639-1646 ISSN：0254-5861
作者机构：
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;[冯泳兰; 张复兴; 邝代治; 蒋伍玖] 湖南省高等专科学校
摘要：
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.
摘要：
Two novel bis(2-hydroxy-5-R-benzylidene) carbohydrazide dibutyltin complexes (R: Cl (T1), Me (T2)) with hexanuclear and triangular frame structures were obtained by microwave-assisted solvothermal reaction of dibutyltin oxide precursor with the ligands in methanol environments, However, their structures are characterized by elemental analysis, IR, (H-1, C-13) NMR spectra, and the molecular structures of T1 and T2 were confirmed by X-ray diffraction. The crystal of T1 belongs to triclinic system, space group P (1) over bar, and T2 is of monoclinic system, space group C2/c. Five-coordinated distorted triangular bipyramids and six-coordinated distorted octahedral configurations were formed by the coordination of oxygen and nitrogen atoms of ligands with two dibutyltins, respectively, and trimer hexanuclear dibutyltin complexes were constructed by the cross-coordination of enol imines. The two complexes exhibit fluorescence emission in DMF solvents and DMF-water mixtures. When the volume fraction of water content is between 0 and 10% (V/V), the aggregation fluorescence enhancement effect is good, and fluorescence quenching occurs when the water content is more than 10% (V/V). The T1 can inhibit the growth of target plants, such as Portulaca oleracea, Cassia tora L., Brassica campestris L.ssp.chinensis var.utilis Tsen et Lee and Amaranthus tricolor L. The T2 can selectively inhibit the growth of Portulaca oleracea L., Amaranthus spinosus L. and Amaranthus tricolor L. It can be used as a candidate herbicide for Portulaca oleracea L., Amaranthus spinosus L. and Amaranthus tricolor L.
摘要：
Diorganotin 2-(2-(4-methoxybenzoyl)hydrazono)-3-phenylpropanoic carboxylate complexes I {[p-CH3O-C6H4O(O)C=N-N=C(PhCH2)COO](n-Bu)(2)Sn(CH3OH)}(2) and II [p-CH3O-C6H4O(O)C=N-N=C(PhCH2)COO](PhCH2)(2)Sn(CH3OH)}(2) have been synthesized. The complexes have been characterized by IR, H-1, C-13 and Sn-119 NMR spectra, FIRMS, elemental analysis, thermal stability analysis and the crystal structures have been determined by X-ray diffraction. The crystal of complex I belongs to triclinic system, space group P (1) over bar with a = 10.437(2), b = 11.576(3), c = 13.085(3) angstrom, alpha = 66.272(2)degrees, beta = 86.920(3)degrees, gamma = 73.367(3)degrees, Z = 2, V = 1383.3(5) angstrom(3), D-c = 1.381 Mg.m(-3), mu(MoK alpha) = 0.959 mm(-1), F(000) = 592, R = 0.0233 and wR = 0.0644. The crystal of complex II is of triclinic system, space group P (1) over bar with a = 10.446(1), b = 11.720(1), c = 13.063(2) angstrom, alpha = 84.190(1)degrees, beta = 71.610(1)degrees, gamma = 72.624(1)degrees, Z = 1, V= 1448.3(3) angstrom(3), D-c = 1.475 Mg.m(-3), mu(MoK alpha) = 0.925 mm(-1), F(000) = 656, R = 0.0169 and wR = 0.0432. In vitro antitumor activities of both complexes were evaluated by MTT against three human cancer cell lines (NCI-H460, HepG2 and MCF7), and two complexes exhibited good antitumor activity. The interaction between complex I and calf thymus DNA were studied by UV-vis and fluorescence spectroscopy, the interaction of complex I with calf thymus DNA were intercalation.
