{"id":1559,"date":"1995-11-07T15:09:49","date_gmt":"1995-11-07T14:09:49","guid":{"rendered":"http:\/\/www.fluoritech.it\/?p=1559"},"modified":"2025-03-27T17:33:55","modified_gmt":"2025-03-27T16:33:55","slug":"epr-and-endor-of-perfluoroalkyl-radical-intermediates-in-the-reaction-between-perfluorohypofluorites-and-perfluoroalkenes","status":"publish","type":"post","link":"https:\/\/www.fluoritech.com\/?p=1559","title":{"rendered":"EPR AND ENDOR OF PERFLUOROALKYL RADICAL INTERMEDIATES IN THE REACTION BETWEEN PERFLUOROHYPOFLUORITES AND PERFLUOROALKENES"},"content":{"rendered":"<p><!--:en--><a href=\"http:\/\/pubs.rsc.org\/en\/Content\/ArticleLanding\/1995\/FT\/ft9959103813#!divAbstract\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2053 aligncenter\" title=\"faraday\" src=\"http:\/\/www.fluoritech.it\/wp-content\/uploads\/1995\/11\/faraday.jpg\" alt=\"\" width=\"87\" height=\"114\" \/><\/a> Author(s): CONTI, F; CORVAJA, C; CREMONESE, F; NAVARRINI, W; TORTELLI, V<\/p>\n<p>Source: JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS<\/p>\n<p>Volume: 91 Issue: 21 Pages: 3813-3820<\/p>\n<p>DOI: 10.1039\/ft9959103813 Published: NOV 7 1995<\/p>\n<p>ABSTRACT:<\/p>\n<p style=\"text-align: justify;\">EPR and ENDOR spectra of the reaction products of sterically hindered perfluoroalkenes with perfluoromethyl hypofluorite and with the perfluoroether hypofluorite X(CF2O)(n)(CF2CF2O)(m)CF2OF, where X is either OCF3 or a second hypofluorite group OCF2-OF, have been recorded. Tertiary and secondary free radicals are produced by the addition to the alkene double bond of a fluorine atom or of the partner radical formed by the homolysis of the hypofluorite O-F bond. Analysis of the spectra reveals that hyperfine splitting by F-19 nuclei in the gamma and delta positions, and even further from the radical centre, contribute spectra. The alpha- and beta-F-19 hyperfine splitting are discussed in relation to the radical structure and conformation. The beta-F-19 splittings are accounted for by the well known equation a(F)(beta) = B cos(2)(theta); different values of the constant B have to be used according to the number of beta-fluorine substituents bonded to the same alpha-carbon.<\/p>\n<p>http:\/\/pubs.rsc.org\/en\/Content\/ArticleLanding\/1995\/FT\/ft9959103813#!divAbstract<\/p>\n<p><!--:--><!--:it--><a href=\"http:\/\/pubs.rsc.org\/en\/Content\/ArticleLanding\/1995\/FT\/ft9959103813#!divAbstract\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" title=\"faraday\" src=\"http:\/\/www.fluoritech.it\/wp-content\/uploads\/1995\/11\/faraday.jpg\" alt=\"\" width=\"87\" height=\"114\" \/><\/a><\/p>\n<p>Author(s): CONTI, F; CORVAJA, C; CREMONESE, F; NAVARRINI, W; TORTELLI, V<\/p>\n<p>Source: JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS<\/p>\n<p>Volume: 91 Issue: 21 Pages: 3813-3820 DOI: 10.1039\/ft9959103813 Published: NOV 7 1995<\/p>\n<p>ABSTRACT:<\/p>\n<p style=\"text-align: justify;\">EPR and ENDOR spectra of the reaction products of sterically hindered perfluoroalkenes with perfluoromethyl hypofluorite and with the perfluoroether hypofluorite X(CF2O)(n)(CF2CF2O)(m)CF2OF, where X is either OCF3 or a second hypofluorite group OCF2-OF, have been recorded. Tertiary and secondary free radicals are produced by the addition to the alkene double bond of a fluorine atom or of the partner radical formed by the homolysis of the hypofluorite O-F bond. Analysis of the spectra reveals that hyperfine splitting by F-19 nuclei in the gamma and delta positions, and even further from the radical centre, contribute spectra. The alpha- and beta-F-19 hyperfine splitting are discussed in relation to the radical structure and conformation. The beta-F-19 splittings are accounted for by the well known equation a(F)(beta) = B cos(2)(theta); different values of the constant B have to be used according to the number of beta-fluorine substituents bonded to the same alpha-carbon.<\/p>\n<p>http:\/\/pubs.rsc.org\/en\/Content\/ArticleLanding\/1995\/FT\/ft9959103813#!divAbstract<\/p>\n<p><!--:--><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Author(s): CONTI, F; CORVAJA, C; CREMONESE, F; NAVARRINI, W; TORTELLI, V Source: JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS Volume: 91 Issue: 21 Pages: 3813-3820 DOI: 10.1039\/ft9959103813 Published: NOV 7 1995 ABSTRACT: EPR and ENDOR spectra of the reaction products of sterically hindered perfluoroalkenes with perfluoromethyl hypofluorite and with the perfluoroether hypofluorite X(CF2O)(n)(CF2CF2O)(m)CF2OF, where X is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"saved_in_kubio":false,"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1559","post","type-post","status-publish","format-standard","hentry","category-papers-1995"],"_links":{"self":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/1559","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1559"}],"version-history":[{"count":9,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/1559\/revisions"}],"predecessor-version":[{"id":3911,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/1559\/revisions\/3911"}],"wp:attachment":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}