{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T03:18:49Z","timestamp":1773026329245,"version":"3.50.1"},"reference-count":13,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2005,12,15]],"date-time":"2005-12-15T00:00:00Z","timestamp":1134604800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Reson in Chemistry"],"published-print":{"date-parts":[[2006,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Diastereoisomeric complexes of methylphenylarsinic acid and (<jats:sc>L<\/jats:sc>)\u2010glutathione could be partially separated by HPLC, but the separated compounds rapidly racemized, presumably by pyramidal inversion at the arsenic atom. Hydrolysis of the diastereoisomeric complexes yielded methylphenylarsinous acid as a pair of enantiomers revealed by a <jats:sup>1<\/jats:sup>H NMR study with an asymmetric lanthanide shift reagent. Methylphenylarsinous acid was also synthesized as an enantiomeric pair, shown by an asymmetric shift reagent experiment, by the hydrolysis of iodomethylphenylarsine. <jats:sup>1<\/jats:sup>H and <jats:sup>13<\/jats:sup>C NMR spectroscopy were used to demonstrate that complexing of phenylarsonic acid with (<jats:italic>R<\/jats:italic>,<jats:italic>S<\/jats:italic>)\u20103\u2010mercapto\u20101,2\u2010propanediol and with (<jats:italic>R<\/jats:italic>,<jats:italic>S<\/jats:italic>)\u20101\u2010mercapto\u20102\u2010propanol yielded, in each case, a pair of enantiomers, PhAs[(<jats:italic>R<\/jats:italic>)\u2010ligand)]<jats:sub>2<\/jats:sub>, PhAs[(<jats:italic>S<\/jats:italic>)\u2010ligand)]<jats:sub>2<\/jats:sub>, in which the homomorphic ligands were diastereotopic, and a pair of diastereoisomers, PhAs[(<jats:italic>R<\/jats:italic>)\u2010ligand][(<jats:italic>S<\/jats:italic>)\u2010ligand], which differed from each other in the configuration about the pseudoasymmetric arsenic atom. 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