Ilayaraja, N. and Manivel, A. and Velayutham, D. and Noel, M. (2008) Effect of alkyl chain length on the electrochemical perfluorination of n-alkane (C6–C10) carboxylic acid chlorides. Journal of Applied Electrochemistry, 38 (2). pp. 175-186.

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Abstract

Electrochemical perfluorination (ECPF) of nhexanoyl, n-heptanoyl, n-octanoyl, n-nonanoyl and ndecanoyl chlorides was carried out under identical experimental conditions in liquid HF. The product distribution among perfluorinated carboxylic acids, perfluoro ethers, perfluoroalkanes, isomerised and fragmented products containing less number of carbon atoms was identified using 19F NMR. The selectivity of C6–C10 perfluoro carboxylic acid varied between 29 and 36%. The alkali insoluble perfluoro cyclic ether and perfluoro alkane fractions increased with increasing chain length. The increase of perfluoroalkane fractions is mainly due to decarboxylation. Cyclic ether fractions also decreased slightly with increase in chain length. Among the cyclic ethers a substituted oxolanes were the predominant products. Six membered cyclic ethers were always found to contain b substitution. The possible pathways for these products are also indicated.

Item Type:	Article
Uncontrolled Keywords:	Electrochemical perfluorination; n-Alkane carboxylic acid chlorides; Perfluoro cyclic ethers; Perfluoro alkanes; Perfluoro acids
Subjects:	Electroorganic
Divisions:	UNSPECIFIED
Depositing User:	ttbdu cecri
Date Deposited:	18 Jan 2012 03:39
Last Modified:	18 Jan 2012 16:01
URI:	http://cecri.csircentral.net/id/eprint/239

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