Speciation of Organotin (IV) Compounds and Evaluation of Light-Induced Decomposition Reaction

有机锡 (IV) 化合物的形态及光诱导分解反应的评价

基本信息

批准号：
07454199
负责人：
FUNAHASHI Shigenobu
金额：
$ 4.99万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

项目摘要

Results of speciation, equilibrium, and structural characterization of organotin (IV) compounds in aqueous solution are as follows :1. Hydrolysis and complexation of organotin (IV) compounds in aqueous solution(1) Equilibrium constants for hydrolysis of dimethyltin (IV), trimethyltin (IV), and triethyltin (IV) ions were determined by potentiometry. Hydroxo-bridged polymers exist. The relation between their structures and polymerization reactions has been clarified.(2) Equilibrium constans for complexation of dimethyltin (IV) and trimethyltin (IV) with aminopolycarboxylates (EDTA,NTA,EDDA,MIDA,PDA) were determined. Electron donicity of the ligands is important for the structure which affects the chelate formation.2. Determination of structure of organotin (IV) conpounds(1) Crystal structures of complexes of dimethyltin (IV) with five aminopolycarboxylates were determined by X-ray analysis. It has been demonstrated that the tin atom is versatile for 3-, 4-, 5-, 6-, and 7-coordinate and that the configuration of the tin is affected by donation of the ligands.(2) By the EXAFS method, were determined the structures around the central tin atoms for several organotin (IV) compounds in an scidic aqueous solution.3. Decomposition of organotin (IV) compounds by laserDecomposed products of methyltin (IV) and tetraphenyltin (IV) by laser were analyzed by ^1H-NMR and the dynamic behavior of triphenyltin (IV) radical produced was observed as a function of water concentration.

水溶液中有机素（IV）化合物的物种，平衡和结构表征的结果如下：1。通过电量测定率测定有机溶液（1）水溶液中有机素（IV）化合物（IV）化合物（1）平衡常数（二甲基丁字蛋白（IV），三甲基丁字蛋白（IV）和三乙基（IV）离子的平衡常数。存在羟基桥的聚合物。其结构与聚合反应之间的关系已阐明。（2）确定二甲基丁字蛋白（IV）（IV）和三甲基丁物蛋白（IV）与氨基二羧酸酯（EDTA，NTA，NTA，EDDA，MIDA，MIDA，PDA）的平衡。配体的电子捐赠对于影响螯合物形成的结构很重要。2。通过X射线分析确定有机素（IV）结构（IV）结构（1）用五个氨基二羧酸酯的二甲基蛋白（IV）的晶体结构。已经证明，锡原子在3-，4-，4-，5-，6-和7坐标中具有多功能性，并且锡的配置受配体捐赠的影响。（2）通过EXAFS方法确定了几种有机蛋白（IV）中部锡原子周围的结构（IV）中央锡原子周围的结构（IV）scidic scidic solicic secidic ocip aquip aquien.3。通过 ^1H-NMR分析了通过激光甲基丁氏素（IV）和四苯甲基丁氏素（IV）的激光量产物对有机素（IV）化合物的分解，并通过 ^1H-NMR分析了Triphenyltin（IV）自由基（IV）自由基的动态行为，从而观察到产生的动态行为。