Primary reactions in crystalline salts of tartaric acids studied by ESR spectroscopy

✍ Scribed by P.-O. Samskog; A. Lund; G. Nilsson; M.C.R. Symons

• Publisher: Elsevier Science
• Year: 1979
• Tongue: English
• Weight: 322 KB
• Volume: 66
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(79)80395-4

✦ Synopsis

Irradiated Rochellc salt and di-K-tartrate were examined by ESR spectroscopy in order to identify the primary products present at 71 I(. For the deuterated RocheL!~ nit we have suggested a deny scheme for a primary species thought to be the oxidation product (~3-O~CCHODCHODCO,(NtfZ On the basis of the 13C, 'Ii and 23BIa hyperfine couplings, the extra proton coupling seen in protonated Rochelle salt and data from di-K-tartrate we have reinterpreted our edier asr&urent of the 77 Ii spectrum. The new results indicate that the primary product seen at 77 R is the reduction product (K")-O~CCHODCHO~02D-(Na*) v.hich decomposes by water elimination to -02CCHO&HCO~.

There is no detectable coupIing to I? in di-tC-tartnte-