Organotin esters of 3-ureidopropionic acid. Crystal structure of triphenyltin(IV) 3-ureidopropionate, (C6H5)3SnOCO(CH2)2NHCONH2

Article abstract of DOI:10.1016/0022-328X(91)86037-Q

Syntheses and spectroscopic (119mSn Moessbauer and infrared) data are reported for tiorganotin derivatives of 3-ureidopropionic acid of the general formula.R3SnOCOCH2CH2NHCONH2 (R = Ph, ⁿBu, cyclohexyl, and p-tolyl) and Ph2RSnOCOCH2CH2NHCONH2 (R = ⁿBu, p-ClC6H4 and cyclopentyl).The crystal structure of triphenyltin 3-ureidopropionate has been determined.The compound adopts a trans-C3SnO2 trigonal bipyramidal geometry with the axial positions occupied by the ester oxygen and the ureido-oxygen of an adjacent molecule.The polymer units are held together by intermolecular hydrogen bonding between the group NH of the ureido fragment and the oxygen of the carboxylate carbonyl.