title: Remarkable stability of tetrabenzo[a,c,g,i]fluorenyl ammonium salts in water: syntheses, reactions, and crystal structures.
abstract: Deprotonation of 8bH-tetrabenzo[a,c,g,i]fluorene (8bH-Tbf), an extremely large benzannulated cyclopentadienyl derivative, by [NR3R'][OH] (R = (n)Bu, Et; R' = (n)Bu, Et, Bn) leads to a series of Tbf ammonium salts of the type [NR3R'][Tbf]. These cyclopentadienide analogs were smoothly isolated from a hydrous medium and structurally characterized by single X-ray diffraction. Subsequent reactions demonstrate the high potential of derivatization by converting the presented [Tbf] anions into functionalized Tbf compounds.
authors.affiliation: Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany. ruediger.beckhaus@uni-oldenburg.de.
authors.forename: Okko N
authors.initials: ON
authors.lastname: Frey
authors.affiliation: Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany. ruediger.beckhaus@uni-oldenburg.de.
authors.forename: Timo
authors.initials: T
authors.lastname: Stalling
authors.affiliation: Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany. ruediger.beckhaus@uni-oldenburg.de.
authors.forename: Florian
authors.initials: F
authors.lastname: Schlüter
authors.affiliation: Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany. ruediger.beckhaus@uni-oldenburg.de.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Saak
authors.affiliation: Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany. ruediger.beckhaus@uni-oldenburg.de.
authors.forename: Marc
authors.initials: M
authors.lastname: Schmidtmann
authors.affiliation: Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany. ruediger.beckhaus@uni-oldenburg.de.
authors.forename: Detlev
authors.initials: D
authors.lastname: Haase
authors.affiliation: Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany. ruediger.beckhaus@uni-oldenburg.de.
authors.forename: Rüdiger
authors.initials: R
authors.lastname: Beckhaus