title: Two alternative products from the intercalation of alkali metals into cation-defective Ruddlesden-Popper oxysulfides.
abstract: Sodium may be topotactically inserted into the perovskite layers (under thermodynamic control) or the rock-salt layers (under kinetic control) of the cation-deficient n = 2 Ruddlesden-Popper oxysulfides Ln2Ti2O5S2 with concomitant reduction of TiIV.
authors.affiliation: Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, UK OX1 3QR.
authors.forename: S G
authors.initials: SG
authors.lastname: Denis
authors.forename: S J
authors.initials: SJ
authors.lastname: Clarke