title: A hexagonal 2a,c superstructure of Ba7F12Cl2.
abstract: Hydrothermal synthesis yielded crystals of heptabarium dodecafluoride dichloride, Ba7F12Cl2, displaying a new 2a,c hexagonal superstructure with P-6 symmetry. The superstructure results from the disorder of Ba2+ cations over two adjacent tricapped trigonal prismatic sites located in channels parallel to the c axis.
authors.affiliation: Institute for Chemical Technologies and Analytics, Division of Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164/SC, A-1060 Vienna, Austria.
authors.forename: Anita
authors.initials: A
authors.lastname: Bernsteiner
authors.forename: Frank
authors.initials: F
authors.lastname: Kubel