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Fluorene, acid strength

Dibenzothiophene acts as a 7r-electron donor and readily forms complexes with known electron acceptors. In such cases the electronic spectrum of a solution of the two compounds shows a new absorption band, usually in the visible region. The order of donor strengths of several o,o -bridged biphenyls has been estimated from their respective charge-transfer spectra and found to be carbazole > fluorene > dibenzothiophene >dibenzofuran. Dibenzothiophene forms complexes with tetracy-anoethylene, various polynitro derivatives of fluorenone, > naphthalene-1,4,5,8-tetracarboxylic acid dianhydride, and tetra-methylmic acid. ... [Pg.202]


See other pages where Fluorene, acid strength is mentioned: [Pg.669]    [Pg.669]    [Pg.669]    [Pg.9]    [Pg.99]    [Pg.288]    [Pg.159]    [Pg.13]    [Pg.165]    [Pg.323]    [Pg.323]    [Pg.259]    [Pg.658]    [Pg.26]    [Pg.185]    [Pg.297]    [Pg.192]    [Pg.323]   
See also in sourсe #XX -- [ Pg.1322 ]




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