Abstract
Reaction of seven amic acids with triphenyltin hydroxide, tricyclohexyltin hydroxide or bis(tributyltin) oxide has given eighteen new triorganostannyl esters. The 119mSn Mössbauer spectra, at 80 K, show them all to be polymers containing pentacoordinate tin atoms and the infrared data at room temperature indicate that the amido carbonyl groups bridge intermoleculary between planar R 3Sn moieties. The polymeric structure of the triphenylstannyl ester of citraconic acid monopyrrolidide has been confirmed by an X-ray study.
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