Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (7): 795-801.DOI: 10.11944/j.issn.1000-0518.2018.07.170326

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Syntheses, Struture and Herbicidal Activity of Bis(substituted salicylaldehyde) Carbohydrazide n-Butyltin Complexes

Chunlin YANGab,Yonglan FENGa,Fuxing ZHANGa,Jiangxi YUa,Wujiu JIANGa,Daizhi KUANGa*()   

  1. aKey Laboratory of Functional Organometallic Materials of College of Hunan Province,Department of Chemistry and Material Science,Hengyang Normal University,Hengyang,Hunan 421008,China
    bCollege of Chemistry,Xiangtan University,Xiangtan,Hunan 411100,China
  • Received:2017-09-11 Accepted:2017-11-28 Published:2018-07-06 Online:2018-07-06
  • Contact: Daizhi KUANG
  • Supported by:
    Supported by the Innovation Platform Open Fund of Hu'nan Provincial Education Department(No.16K011, No.14K014), the Natural Science Foundation of Hu'nan Province(No.13JJ3112)

Abstract:

Four n-butyltin complexes, ( n-BuSn) 2CI3(OH2)[(2-OH,R)PhCH=NNH]2CX [R:4-NEt2, X:O(A1); R:4-NEt2, X:S(A2); R:3,5-(t-Bu)2, X:O(A3); R:3,5-(t-Bu)2, X:S(A4)], were obtained by microwave-assisted solvothermal reaction of n-butyltintrichloride(n-BuSnCl3) with bis(4-diethylamino or 3,5-di-t-butyl salicylaldehyde)carbohydrazide and thiocarbohydrazide in methanol environments, which were characterized by elemental analysis, IR, 1H NMR, and 13C NMR spectra. The crystal structure of complex A2 shows a binuclear hexacoordinated distorted octahedral configuration. The ligands and their butyltin complexes inhibit the growth of plants, such as Portulaca oleracea, Amaranthus spinosus, Brassica campestris ssp. chinensis var. Utilis, Amaranthus tricolor and Cassia tora. Complexes A1, A2 have a broad range of growth inhibition activity, while complexes A3 and A4 have selective inhibitory activity. They can be used as candidate herbicides for weed growth inhibition.

Key words: bis(substituted salicylaldehyde) carbohydrazide butyltin complex, crystal struture, herbicidal activity