两个具有Sn4O8簇结构的二丁基锡芳氧乙酸酯配合物的合成、晶体结构及除草活性  

Synthesis,crystal structure,and herbicidal activity of two tetranuclear di(n-butyl)tin aryloyacetates complexes with Sn_(4)O_(8) cluster

作　　者：谭宇星 冯泳兰 张复兴 庾江喜 蒋伍玖 邝代治 TAN Yu‑Xing;FENG Yong‑Lan;ZHANG Fu‑Xing;YU Jiang‑Xi;JIANG Wu‑Jiu;KUANG Dai‑Zhi(Key Laboratory of Functional Metal-Organic Compounds of Hunan Province,Key Laboratory of Organometallic New Materials,College of Hunan Province,Hunan Provincial Engineering Research Center for Monitoring and Treatment of Heavy Metals Pollution in the Upper Reaches of Xiangjiang River,School of Chemistry and Materials Science,Hengyang Normal University,Hengyang,Hunan 421008,China)

机构地区：[1]衡阳师范学院化学与材料科学学院,金属有机新材料湖南省普通高等学校重点实验室,功能金属有机化合物湖南省重点实验室,湘江上游重金属污染监测与治理湖南省工程研究中心,衡阳421008

出　　处：《无机化学学报》2023年第4期649-658,共10页Chinese Journal of Inorganic Chemistry

基　　金：湖南省自然科学基金(No.2022JJ30096);功能金属有机化合物湖南省重点实验室开放基金(No.2022HSKFJJ028)资助。

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—OCH_(2)COOSn(n-Bu)_(2))_(2)O]_(2)(R=H (C1)、Cl (C2))。经元素分析、IR、^(1)H和^(13)C 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Sn2O_(2)平面四元环为中心的Sn4O_(4)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。Two tetranuclear di(n‑butyl)tin aryloyacetates[(o‑R—C6H4—OCH_(2)COOSn(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,^(1)H,^(13)C NMR,and X‑ray crystal diffraction.There is a ladder structure formed by a four‑membered central endocyclic Sn2O_(2) unit in the independent molecules of complexes C_(1) and C_(2),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 complex C1 has 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).

关 键 词：二丁基锡芳氧乙酸酯 合成 晶体结构 热稳定性 除草活性 

分 类 号：O614.43[理学—无机化学]