【摘要】 以二丁基氧化锡分别与苯氧乙酸（L1）、邻氯苯氧乙酸（L2）反应，合成了2个四核二丁基锡芳氧乙酸酯配合物[（o-R—C₆H₄—OCH₂COOSn（n-Bu）₂）₂O]₂（R=H （C1）、Cl （C2））。经元素分析、IR、¹H和¹³C NMR以及X射线单晶衍射表征其结构。在配合物C1、C2的独立分子中，分别存在1个以Sn2O2平面四元环为中心的Sn₄O₄梯形结构，梯的两侧分别由羧基的2个O原子与梯边的Sn—O—Sn链桥联成六元环，形成一个含Sn₄O₈的锡氧簇结构。配合物在220℃（C1）、250℃（C2）的空气气氛下具有较好的热稳定性。除草活性结果表明，配合物C1对决明具有较好的生长调节作用，配合物C2在50 mg·L^-1浓度下可高效、选择性地抑制刺苋的茎和根的生长。更多还原

【Abstract】 Two tetranuclear di（n-butyl）tin aryloyacetates [（o-R—C₆H₄—OCH₂COOSn（n-Bu）₂）₂O]₂（R=H（C1）, Cl（C2））have been synthesized by the reaction of phenoxyacetic acid or o-chlorophenoxyacetic acid with dibutyltin oxide,respectively. The structures were characterized by elemental analysis, IR,¹H,¹³C NMR, and X-ray crystal diffraction. There is a ladder structure formed by a four-membered central endocyclic Sn₂O₂ unit in the independent molecules of complexes C1 and C2, two carboxyl oxygen atoms and an Sn—O—Sn unit constituted the six-membered ring on both sides of the ladder, which constitutes the Sn₄O₈ configuration. Thermogravimetric analysis shows that the complexes possess good thermal stability in the air atmosphere. Herbicidal activity results show that complexC1has good regulative effects on the growth of Cassia tora Linn., and complex C2 has better inhibitory activity against the root and stalk of Amaranthus spinosus at the concentration of 50 mol·L-1. CCDC: 1446836,C1; 1446835,C2更多还原