{"id":1454,"date":"1994-03-03T10:29:48","date_gmt":"1994-03-03T09:29:48","guid":{"rendered":"http:\/\/www.fluoritech.it\/?p=1454"},"modified":"2025-03-27T17:31:49","modified_gmt":"2025-03-27T16:31:49","slug":"electrochemical-behavior-and-epr-of-radical-anions-of-perfluoroalkyl-substituted-olefins","status":"publish","type":"post","link":"https:\/\/www.fluoritech.com\/?p=1454","title":{"rendered":"Electrochemical Behavior and EPR of Radical Anions of Perfluoroalkyl-Substituted Olefins"},"content":{"rendered":"

\"\"<\/a> Carlo Corvaja, Giuseppe Farnia, Gianni Formenton, Walter Navarrini, Giancarlo Sandona, Vito Tortelli<\/p>\n

Source: JOURNAL OF PHYSICAL CHEMISTRY <\/span><\/p>\n

Volume: 98 Issue: 9 Pages: 2307-2313 <\/span><\/p>\n

DOI: 10.1021\/j100060a017<\/span><\/p>\n

<\/pre>\n
ABSTRACT:<\/div>\n
Some perfluoroalkylolefins are shown to undergo electrochemical one-electron reduction to the corresponding radical anions at potential values which strongly depend on the structure of the substituents. In these cases the voltammetric reduction peak is chemically reversible, and a further one-electron transfer, affording the corresponding dianions, is detected at more negative potentials. For these substrates, at appropriate temperatures, the free radical anions are stable enough to be accumulated by macroscale electrolysis and investigated by EPR. The spectra are characterized by fairly large hyperfine couplings of F-19 in alpha, beta, and gamma positions relative to the pi carbon centers and by line width effects due to restricted rotations of the perfluoroalkyl groups around the C-C single bonds. The case of tetrakis(trifluoromethyl)ethylene has been analyzed in detail, and it is concluded that the rotation motion of the four trifluoromethyl groups should be in part correlated.<\/div>\n
<\/div>\n
http:\/\/pubs.acs.org\/doi\/abs\/10.1021\/j100060a017<\/div>\n
\"\"<\/a> Carlo Corvaja, Giuseppe Farnia, Gianni Formenton, Walter Navarrini, Giancarlo Sandona, Vito Tortelli Source: JOURNAL OF PHYSICAL CHEMISTRY Volume: 98 Issue: 9 Pages: 2307-2313 DOI: 10.1021\/j100060a017 ABSTRACT:<\/p>\n
Some perfluoroalkylolefins are shown to undergo electrochemical one-electron reduction to the corresponding radical anions at potential values which strongly depend on the structure of the substituents. In these cases the voltammetric reduction peak is chemically reversible, and a further one-electron transfer, affording the corresponding dianions, is detected at more negative potentials. For these substrates, at appropriate temperatures, the free radical anions are stable enough to be accumulated by macroscale electrolysis and investigated by EPR. The spectra are characterized by fairly large hyperfine couplings of F-19 in alpha, beta, and gamma positions relative to the pi carbon centers and by line width effects due to restricted rotations of the perfluoroalkyl groups around the C-C single bonds. The case of tetrakis(trifluoromethyl)ethylene has been analyzed in detail, and it is concluded that the rotation motion of the four trifluoromethyl groups should be in part correlated.<\/p>\n
http:\/\/pubs.acs.org\/doi\/abs\/10.1021\/j100060a017<\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
Carlo Corvaja, Giuseppe Farnia, Gianni Formenton, Walter Navarrini, Giancarlo Sandona, Vito Tortelli Source: JOURNAL OF PHYSICAL CHEMISTRY Volume: 98 Issue: 9 Pages: 2307-2313 DOI: 10.1021\/j100060a017 ABSTRACT: Some perfluoroalkylolefins are shown to undergo electrochemical one-electron reduction to the corresponding radical anions at potential values which strongly depend on the structure of the substituents. In these cases […]<\/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":[14],"tags":[],"class_list":["post-1454","post","type-post","status-publish","format-standard","hentry","category-papers-1994"],"_links":{"self":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/1454","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=1454"}],"version-history":[{"count":19,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/1454\/revisions"}],"predecessor-version":[{"id":3895,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=\/wp\/v2\/posts\/1454\/revisions\/3895"}],"wp:attachment":[{"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1454"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1454"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fluoritech.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1454"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}