ジメトエートにおけるN-H…S分子内水素結合

大井 尚文, 中沢 修, 稲葉 栄司

doi:10.2116/bunsekikagaku.17.364

ジメトエートにおけるN-H…S分子内水素結合

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大井尚文

住友化学 (株) 中央研究所
中沢修
稲葉栄司

住友化学 (株) 大阪製造所

書誌事項

タイトル別名

N-H…S intramolecular hydrogen bonding in Dimethoate
ジメトエートニオケル N-H S ブンシナイスイソケツゴウ

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説明

It was observed that Dimethoate {O, O-dimethyl-S- (N-methylcarbamoylmethyl) -pithiophosphate}, one of the organo-phosphoric insecticides, shows two absorptions at 3460 and 3430 cm^-1, being assigned to NH stretching vibration of free molecule in dilute carbon tetrachloride solution. Changes of absorption intensity in various concentrations and of the absorption bands measured in a solvent mixture of both carbon tetrachloride and mesitylene were examined. In this connection, N-methylphenylmercaptoacetamide and N-methyl-β-phenylpropionamide, as related compounds, were also synthesized and their NH stretching vibrations in carbon tetrachloride were examined. The absorption3460 cm^-1 is considered to be due completely to the free NH group, and that at 3430 cm^-1 has been clarified to be caused by the stretching vibration fo the NH-group, intramolecular hydrogen bonding being formed such like N-H…S.