Publication: Synthesis, crystal structure and magnetic properties of Li0.44Eu3[B3N6]
Program
KU Authors
Co-Authors
Prots, Yurii
Foerster, Tobias
Sichelschmidt, Jörg
Auffermann, Gudrun
Schnelle, Walter
Schappacher, Falko
Poettgen, Rainer
Publication Date
Language
Type
Embargo Status
Journal Title
Journal ISSN
Volume Title
Alternative Title
Abstract
Li0.44Eu3[B3N6] was synthesized from the metathesis reaction of Li-3[BN2] and EuCI3 at 850 degrees C. Li0.44EU3-[B3N6] crystallizes in the trigonal space group R (3) over barc (No. 167) with a=12.0225(2) angstrom, c=6.8556(2) angstrom and Z=6. In the crystal structure, isolated, planar cyclic [B3N6](9-) units are charge-balanced by the mixed-valence Eu3+/Eu2+ and Li+ cations. Li+ occupies partially (44%) the Wyckoff site 6b and is sandwiched between the [B3N6](9-) anions. Mossbauer spectroscopy results show the resonance lines of Eu2+ and Eu3+, respectively, indicating the heterogeneous mixed valency of the Eu atoms. X-Band ESR investigations between 5 and 300 K reveal an intense signal over the whole temperature range originating from Eu2+. Magnetic susceptibility measurements indicate a Curie-Weiss behavior with an experimental effective magnetic moment of (mu eff)=8.28 (mu B) per formula unit.
Source
Publisher
Elsevier
Subject
Chemistry, Inorganic and nuclear chemistry, Physical chemistry
Citation
Has Part
Source
Journal of Solid State Chemistry
Book Series Title
Edition
DOI
10.1016/j.jssc.2013.11.001