Add time:09/10/2019 Source:sciencedirect.com
The triorganotin(IV) derivatives of N-benzoyl-dl-alanine (HA), R3SnA, and N-benzoyl-dl-alanylglycine (HDP), R3SnDP (R methyl, n-propyl, n-butyl, phenyl and cyclohexyl, respectively,) have been prepared from the triorganotin(IV) chlorides R3SnCl and the appropriate N-benzoylamino acid. The compounds are five-coordinate and polymeric in the solid state. The tin atoms in triorganotin(IV) groups R3Sn are coordinated by the unidentate carboxylic group and by the oxygen atom of the amidocarbonyl group of adjacent molecule. The compounds are essentially monomeric in non-coordinating solvents (CHCl3, benzene, nitrobenzene and camphor, respectively), in coordinating solvents (dimethyl sulphoxide, hexamethylphosphortriamide) coordination by one molecule of solvent occurs to form trans-trigonal bypyramid five-coordinate complexes.
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