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Triphenyllead derivatives Ph 3 PbL (HL = glycine, alanine, phenylalanine) and (Ph 3 Pb) 2 L′ (H 2 L′ = aspartic acid) have been prepared from Ph 3 PbOH and the appropriate amino acid. PH 3 Pb-leucinate has been synthesized from Ph 3 PbCl and Tl(I)-leucinate. From IR data structural proposals are inferred: Ph 3 Pb-glycinate is polymeric through monodentate carboxylate and coordinating NH 2 ; Ph 3 Pb-alaninate, -phenylalaninate, and -leucinate contain bidentate carboxylate and non-coordinating NH 2  groups and are probably monomeric. For (Ph 3 Pb) 2 -aspartate and (Me 3 Sn) 2 -aspartate a structure with coordinating NH 2  and mono-and bidentate carboxylate groups is proposed.

zeitschrift für naturforschung b

Darstellung und Charakterisierung von Triphenylbleiderivaten einiger Aminosäuren/Preparation and Characterization of Triphenyllead Derivatives of Some Amino Acids