{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T19:55:24Z","timestamp":1760298924623,"version":"3.41.0"},"reference-count":36,"publisher":"Canadian Science Publishing","issue":"10","license":[{"start":{"date-parts":[[2014,10,1]],"date-time":"2014-10-01T00:00:00Z","timestamp":1412121600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.nrcresearchpress.com\/page\/about\/CorporateTextAndDataMining"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Can. J. Chem."],"published-print":{"date-parts":[[2014,10]]},"abstract":"<jats:p> Optical absorption spectra of three dinitroaromatic radical anions, 2,7-dinitro-9,9-dimethylfluorene (1<jats:sup>\u2022\u2212<\/jats:sup>), 4,4\u2032-dinitrobiphenyl (2<jats:sup>\u2022\u2212<\/jats:sup>), and 4,4\u2032-dinitrotolane (3<jats:sup>\u2022\u2212<\/jats:sup>) in solvents THF, HMPA, and MeCN show both an unresolved broad band characteristic of charge-localized mixed valence species (Robin-Day classification Class II), and a vibronically structured band of the delocalized species (Class III). With decreasing solvent reorganization energy, a greater portion of the compounds become charge-delocalized. In particular, 1<jats:sup>\u2022\u2212<\/jats:sup> with the greatest coupling, is almost entirely composed of the delocalized species in all solvents. An intense Raman mode is used to identify the charge-bearing unit as the nitrobenzene moiety. Resonance Raman profiles are utilized to gain detailed information of vibrational modes. The out-of-phase ring lengthening stretch mode is observed to be enhanced at higher excitation energies, corresponding to the absorption band of the Class II species, while the in-phase ring lengthening stretch mode, a totally symmetric vibration, is most strongly enhanced in the absorption region of the Class III species. Resonance Raman profiles support the solvent-dependent coexistence of Class II and Class III molecules of the same chemical composition. <\/jats:p>","DOI":"10.1139\/cjc-2014-0058","type":"journal-article","created":{"date-parts":[[2014,5,1]],"date-time":"2014-05-01T21:35:37Z","timestamp":1398980137000},"page":"940-947","source":"Crossref","is-referenced-by-count":2,"title":["Resonance Raman spectroscopic study of solvent-dependent coexistence of localized and delocalized dinitroaromatic radical anions"],"prefix":"10.1139","volume":"92","author":[{"given":"Ryan M.","family":"Hoekstra","sequence":"first","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA."}]},{"given":"Yen-Ting","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA."}]},{"given":"Matthew D.","family":"Kiesz","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA."}]},{"given":"Jo\u00e3o P.","family":"Telo","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Instituto Superior T\u00e9cnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal."}]},{"given":"Rachel M.","family":"Stephenson","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA."}]},{"given":"Stephen F.","family":"Nelsen","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Molecular Structure Laboratory, University of Wisconsin, 1101 University Avenue, Madison, WI 53706-1396, USA."}]},{"given":"Jeffrey I.","family":"Zink","sequence":"additional","affiliation":[{"name":"Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569, USA."}]}],"member":"155","reference":[{"key":"refg1\/ref1a","doi-asserted-by":"publisher","DOI":"10.1021\/ja036046k."},{"key":"refg1\/ref1b","doi-asserted-by":"publisher","DOI":"10.1021\/jp044750x."},{"key":"refg1\/ref1c","doi-asserted-by":"publisher","DOI":"10.1021\/jp055880o"},{"key":"refg2\/ref2","doi-asserted-by":"publisher","DOI":"10.1021\/jp807940h"},{"key":"refg3\/ref3a","doi-asserted-by":"publisher","DOI":"10.1002\/9780470166093.ch7."},{"key":"refg3\/ref3b","doi-asserted-by":"publisher","DOI":"10.1016\/0010-8545(85)80047-3"},{"key":"refg4\/ref4a","doi-asserted-by":"publisher","DOI":"10.1002\/9780470166314.ch9."},{"key":"refg4\/ref4b","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4173(85)90014-X"},{"key":"refg5\/ref5","doi-asserted-by":"publisher","DOI":"10.1080\/02603599208052195"},{"key":"refg6\/ref6","doi-asserted-by":"publisher","DOI":"10.1021\/ct300545x"},{"key":"refg7\/ref7","doi-asserted-by":"publisher","DOI":"10.1021\/ja067088m"},{"key":"refg8\/ref8","doi-asserted-by":"publisher","DOI":"10.1021\/ja051178u"},{"key":"refg9\/ref9a","doi-asserted-by":"publisher","DOI":"10.1021\/jp807602k."},{"key":"refg9\/ref9b","doi-asserted-by":"publisher","DOI":"10.1021\/ja0441920."},{"key":"refg9\/ref9c","doi-asserted-by":"publisher","DOI":"10.1021\/jp9017508"},{"key":"refg10\/ref10a","doi-asserted-by":"publisher","DOI":"10.1002\/poc.2905."},{"key":"refg10\/ref10b","doi-asserted-by":"publisher","DOI":"10.1021\/ja207827m."},{"key":"refg10\/ref10c","doi-asserted-by":"publisher","DOI":"10.1021\/ja400673c"},{"key":"refg11\/ref11","doi-asserted-by":"publisher","DOI":"10.1016\/S0065-2792(08)60179-X"},{"key":"refg12\/ref12","doi-asserted-by":"publisher","DOI":"10.1002\/9780470166093.ch6"},{"key":"refg13\/ref13","doi-asserted-by":"publisher","DOI":"10.1021\/ja1017859"},{"key":"refg14\/ref14","unstructured":"Ball, T. 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