Magnetic non-equivalence of the α-methylene protons in alkyl chlorosulphites and the effects of temperature and of pyridinium chloride

Magnetic non-equivalence of the α-methylene protons in a series of alkyl chlorosulphites results from the asymmetry of the SOCl grouping. Partial collapse to a simple resonance pattern occurs on heating pure neopentyl chlorosulphite to 100° and is attributed to the onset of bimolecular exchange of c...

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Published in:Spectrochimica acta. Part A: Molecular spectroscopy 1971-01, Vol.27 (6), p.926-928
Main Authors: Hudson, H.R., Rees, R.G., De Spinoza, G.Riga
Format: Article
Language:English
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Summary:Magnetic non-equivalence of the α-methylene protons in a series of alkyl chlorosulphites results from the asymmetry of the SOCl grouping. Partial collapse to a simple resonance pattern occurs on heating pure neopentyl chlorosulphite to 100° and is attributed to the onset of bimolecular exchange of chlorine. Trace amounts of chloride ion cause rapid chlorine exchange and consequent loss of non-equivalence.
ISSN:0584-8539
DOI:10.1016/0584-8539(71)80172-1