title: Ba4Ru3O10.2(OH)1.8: a new member of the layered hexagonal perovskite family crystallised from water.
abstract: A new barium ruthenium oxyhydroxide Ba4Ru3O10.2(OH)1.8 crystallises under hydrothermal conditions at 200 °C: powder neutron diffraction data show it adopts an 8H hexagonal perovskite structure with a new stacking sequence, while high resolution electron microscopy reveals regions of ordered layers of vacant Ru sites, and magnetometry shows antiferromagnetism with TN = 200(5) K.
authors.affiliation: Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK. r.i.walton@warwick.ac.uk.
authors.forename: Craig I
authors.initials: CI
authors.lastname: Hiley
authors.forename: Martin R
authors.initials: MR
authors.lastname: Lees
authors.forename: David L
authors.initials: DL
authors.lastname: Hammond
authors.forename: Reza J
authors.initials: RJ
authors.lastname: Kashtiban
authors.forename: Jeremy
authors.initials: J
authors.lastname: Sloan
authors.forename: Ronald I
authors.initials: RI
authors.lastname: Smith
authors.forename: Richard I
authors.initials: RI
authors.lastname: Walton