title: A Highly Triflated Rare-Earth Ion in [Eu(O3SCF3)8](5-).
abstract: The reaction of Eu2O3 with fuming nitric acid, trifluormethanesulfonic acid, and its anhydride in torch-sealed glass ampoules at 120 °C gave the europium compound (NO)5[Eu(O3SCF3)8] (orthorhombic, Fddd, Z = 16, a = 1932.69(4), b = 2878.44(7), c = 2955.12(7) pm, V = 16439.7(7) Å(3)). The compound exhibits the [Eu(O3SCF3)8](5-) anion showing for the first time a lanthanide ion that is exclusively coordinated by eight triflate anions. The anion has been further investigated by DFT calculations, which also allowed clear assignment of the vibrational spectra. Moreover, magnetochemical and luminescence measurements gave additional insight into the properties of this complex. The luminescence spectra revealed that the Eu(3+) ions are in a pseudo D4d symmetric environment.
authors.affiliation: Carl von Ossietzky Universität Oldenburg, Institut für Chemie, Carl-von-Ossietzky Strasse 9-11, 26129 Oldenburg (Germany), Fax: (+49) 441-798-3352.
authors.forename: Jörn
authors.initials: J
authors.lastname: Bruns
authors.affiliation: Universität Siegen, Institut für Anorganische Chemie, Adolf-Reichwein-Strasse 2, 57068 Siegen (Germany).
authors.forename: Sascha
authors.initials: S
authors.lastname: Krüger
authors.affiliation: Universität Siegen, Institut für Anorganische Chemie, Adolf-Reichwein-Strasse 2, 57068 Siegen (Germany).
authors.forename: Matthias
authors.initials: M
authors.lastname: Adlung
authors.affiliation: Universität Siegen, Institut für Anorganische Chemie, Adolf-Reichwein-Strasse 2, 57068 Siegen (Germany).
authors.forename: Claudia
authors.initials: C
authors.lastname: Wickleder
authors.affiliation: Westfälische Wilhelms Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstrasse 30, 48149 Münster (Germany).
authors.forename: Oliver
authors.initials: O
authors.lastname: Niehaus
authors.affiliation: Westfälische Wilhelms Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstrasse 30, 48149 Münster (Germany).
authors.forename: Rainer
authors.initials: R
authors.lastname: Pöttgen
authors.affiliation: Carl von Ossietzky Universität Oldenburg, Institut für Chemie, Carl-von-Ossietzky Strasse 9-11, 26129 Oldenburg (Germany), Fax: (+49) 441-798-3352.
authors.forename: Thorsten
authors.initials: T
authors.lastname: Klüner
authors.affiliation: Carl von Ossietzky Universität Oldenburg, Institut für Chemie, Carl-von-Ossietzky Strasse 9-11, 26129 Oldenburg (Germany), Fax: (+49) 441-798-3352.
authors.forename: Jessica
authors.initials: J
authors.lastname: Kräuter
authors.affiliation: Carl von Ossietzky Universität Oldenburg, Institut für Chemie, Carl-von-Ossietzky Strasse 9-11, 26129 Oldenburg (Germany), Fax: (+49) 441-798-3352. mathias.wickleder@uni-oldenburg.de.
authors.forename: Mathias S
authors.initials: MS
authors.lastname: Wickleder
keywords: europium; luminescence; rare earths; thermal decomposition; vibrational spectroscopy