title: Ba8Co2Mn6ClO22, a quasi-1D hexagonal perovskite polytype containing new 8H-blocks.
abstract: In this communication we report the synthesis and full structural characterization of the new phase Ba(8)Co(2)Mn(6)ClO(22) formed of novel 8H-hexagonal perovskite blocks, a good example of the use of a multi-technique approach (combination of single crystal X-ray diffraction, micro-probe analysis and DFT calculations). Strikingly, the stabilization of original linear hexamers in the blocks is achieved by Mn/Co ordering in the octahedral and tetrahedral sites.
authors.affiliation: Univ. Lille Nord de France, Unité de Catalyse et de Chimie du Solide, UCCS, CNRS UMR8181, F-59652 Villeneuve d'Ascq cedex, France.
authors.forename: Mihaela
authors.initials: M
authors.lastname: Iorgulescu
authors.forename: Houria
authors.initials: H
authors.lastname: Kabbour
authors.forename: Nathalie
authors.initials: N
authors.lastname: Tancret
authors.forename: Olivier
authors.initials: O
authors.lastname: Mentré
authors.forename: Pascal
authors.initials: P
authors.lastname: Roussel