Formation of the blue trisulphur radical anion, S₃^–, in solutions of alkali polysulphides in dimethylformamide, and from elemental sulphur and piperidyl-lithium in hexamethylphosphoramide

1 January 1974

journal article
Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.

No. 6,p. 631-633
https://doi.org/10.1039/dt9740000631

Abstract

I.r. and visible spectra identify the blue species in solutions of alkali polysulphides in dimethylformamide (DMF) as S₃ ^–. Elemental sulphur (S₈) is reduced to S₃ ^– by secondary amines in hexamethylphosphoramide (HMPA). The reaction of piperidyl-lithium with S₈ in HMPA has been investigated to determine the stoicheiometry and the nature of the final products.

Keywords

BLUE
SUP
HMPA
TRISULPHUR
VISIBLE
RADICAL
SECONDARY
I.R
STOICHEIOMETRY
ANION

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Formation of the blue trisulphur radical anion, S3–, in solutions of alkali polysulphides in dimethylformamide, and from elemental sulphur and piperidyl-lithium in hexamethylphosphoramide

Abstract

Keywords

Formation of the blue trisulphur radical anion, S₃^–, in solutions of alkali polysulphides in dimethylformamide, and from elemental sulphur and piperidyl-lithium in hexamethylphosphoramide