title: High- and low-temperature La2RuO5 by powder neutron diffraction.
abstract: The structure of dilanthanum ruthenium pentoxide was solved by powder neutron diffraction at room temperature and 1.5 K. High-temperature La2RuO5 crystallizes in the monoclinic space group P2(1)/c. Upon cooling, the sample undergoes a phase transition to the triclinic low-temperature form (space group P-1). This transition leads to pronounced changes in the Ru-O-Ru bond distances, resulting in a dimerization of the ruthenium ions.
authors.affiliation: Lehrstuhl für Festkörperchemie, Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany. stefan.ebbinghaus@physik.uni-augsburg.de
authors.forename: Stefan G
authors.initials: SG
authors.lastname: Ebbinghaus