title: Canted Antiferromagnetism in Two-Dimensional Silver(II) Bis[pentafluoridooxidotungstate(VI)].
abstract: By slow reaction between colorless AgIW2O2F9and elemental F2in liquid anhydrous HF, violet platelike single crystals of Ag(WOF5)2were grown. The crystal structure of Ag(WOF5)2consists of layers built from Ag2+cations bridged by [WOF5]-anions and not, as previously assumed, from infinite [AgII-F]+∞chains and [W2O2F9]-anions. A majority (97%) of the disordered AgIIcations are found with square-planar coordination of F/O ligands within the same layer, and they form additional long contacts with O/F atoms originating from the neighboring layers. The remaining 3% the of Ag(II) ions are coordinated only by F atoms in a square-planar fashion. The magnetic moments of Ag2+from the same layer are almost perfectly antiferromagnetically aligned. Weak ferromagnetic interlayer interactions cause a small tilt (∼1.5°) of the magnetic moments, resulting in canted antiferromagnetism. Because of the lowering of the symmetry of [WOF5]-in the solid state, the vibrational spectra show more bands than expected for regular C4vsymmetry. The electronic spectrum of Ag(WOF5)2is reported and analyzed.
authors.affiliation: Department of Inorganic Chemistry and Technology, Jožef Stefan Institute , Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: Zoran
authors.identifier: http://orcid.org/0000-0003-3085-7323
authors.initials: Z
authors.lastname: Mazej
authors.affiliation: CENT, University of Warsaw , Żwirki i Wigury 93, 02-089 Warsaw, Poland.|Faculty of Chemistry, University of Warsaw , Pasteur 1, 02-093 Warsaw, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Gilewski
authors.affiliation: Department of Inorganic Chemistry and Technology, Jožef Stefan Institute , Jamova 39, SI-1000 Ljubljana, Slovenia.
authors.forename: Evgeny A
authors.initials: EA
authors.lastname: Goreshnik
authors.affiliation: Faculty of Civil and Geodetic Engineering, and Institute of Mathematics, Physics and Mechanics, University of Ljubljana , Jadranska 19, SI-1000 Ljubljana, Slovenia.
authors.forename: Zvonko
authors.initials: Z
authors.lastname: Jagličić
authors.affiliation: CENT, University of Warsaw , Żwirki i Wigury 93, 02-089 Warsaw, Poland.
authors.forename: Mariana
authors.initials: M
authors.lastname: Derzsi
authors.affiliation: CENT, University of Warsaw , Żwirki i Wigury 93, 02-089 Warsaw, Poland.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Grochala