+++Огромное спасибо mlkost!!!2 статьи c ACS publications

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1. Acidity of Hydrocarbons. XXIII. Base-Catalyzed Proton Exchange of 1H-Undecafluorobicyclo[2.2.1]heptane and the Role of Carbon-Fluorine No-Bond Resonance
A. Streitwieser, David. Holtz
J. Am. Chem. Soc., 1967, Volume 89, Issue 3, pp 692–693

DOI:

http://dx.doi.org/10.1021/ja00979a041

2.Acidity of Hydrocarbons. XXIV. Proton Exchange of 9-Substituted Fluorenes with Methanolic Sodium Methoxide. Stabilization of 9-Trifluoromethylfluorenyl Anion by Inductive Effects
A. Streitwieser, Alan P. Marchand, A. H. Pudjaatmaka
J. Am. Chem. Soc., 1967, Volume 89, Issue 3, pp 693–694

DOI:

http://dx.doi.org/10.1021/ja00979a042

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