title: Manganese Vanadate Chemistry in Hydrothermal BaF2Brines: Ba3Mn2(V2O7)2F2and Ba7Mn8O2(VO4)2F23.
abstract: Manganese vanadate fluorides were synthesized using high-temperature hydrothermal techniques with BaF2as a mineralizer. Ba3Mn2(V2O7)2F2crystallizes in space group C2/c and consists of dimers built from edge-sharing MnO4F2trigonal prisms with linking V2O7groups. Ba7Mn8O2(VO4)2F23crystallizes in space group Cmmm, with a manganese oxyfluoride network built from edge- and corner-sharing Mn2+/3+(O,F)6octahedra. These octahedra form alternating Mn2+and Mn2+/3+layers separated by VO4tetrahedra. This latter compound exhibits a canted antiferromagnetic order below TN= 25 K.
authors.affiliation: Department of Chemistry and Center for Optical Materials Science and Engineering Technologies, Clemson University , Clemson, South Carolina 29634-0973, United States.
authors.forename: Liurukara D
authors.initials: LD
authors.lastname: Sanjeewa
authors.affiliation: Department of Chemistry and Center for Optical Materials Science and Engineering Technologies, Clemson University , Clemson, South Carolina 29634-0973, United States.
authors.forename: Colin D
authors.identifier: http://orcid.org/0000-0002-7773-8797
authors.initials: CD
authors.lastname: McMillen
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
authors.forename: Michael A
authors.initials: MA
authors.lastname: McGuire
authors.affiliation: Department of Chemistry and Center for Optical Materials Science and Engineering Technologies, Clemson University , Clemson, South Carolina 29634-0973, United States.
authors.forename: Joseph W
authors.initials: JW
authors.lastname: Kolis