Titre du document / Document title

The structure of onoratoite, Sb₈O₁₁X₂ (X = Cl, Br) revisited

Auteur(s) / Author(s)

MAYEROVA Zuzana ⁽¹⁾ ; JOHNSSON Mats ⁽¹⁾ ; LIDIN Sven ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Inorganic Chemistry, Stockholm University, 106 91 Stockholm, SUEDE

Résumé / Abstract

The crystal structure of Sb₈O₁₁Cl₂ (onoratoite) is redetermined in the triclinic space group P-1. The crystal structure was previously described by a partially disordered model in the'monoclinic space group C2/m containing some partially occupied oxygen atoms. The new structural model features exclusively atomic positions that are fully occupied. The crystal structure was solved from single crystal data and the unit cell parameters are a = 10.317(2) Å, b = 11.269(2) Å, c = 13.939(3) Å, a = 79.29(2)°, β = 76.29(2)°, y = 73.00(2)°, Z = 2, R = 0.0637. It contains antimony oxide in the form of infinite tubes interleaved with halide ions, a main feature very similar to the previous model. However, in the new model the tubes contain both [SbO₄E] (E = 5s² lone pair of electrons) trigonal bipyramids and [SbO₃E] tetrahedral, whereas the old model was composed entirely of trigonal bipyramidal [SbO₄E] units. The isostructural compound Sb₈O₁₁Br₂ was synthesized as well.

Revue / Journal Title

Solid state sciences   ISSN 1293-2558 

Source / Source

2006, vol. 8, n^o7, pp. 849-854 [6 page(s) (article)] (31 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Paris, FRANCE  (1999) (Revue)

Mots-clés anglais / English Keywords

Inorganic compounds ; Ladder structure ; Monocrystals ; Ternary compounds ; Antimony Oxybromides ; Antimony Oxychlorides ; Triclinic lattices ; Structural models ; Crystal structure ; Experimental study ;

Mots-clés français / French Keywords

Composé minéral ; Structure échelle ; Br O Sb ; Sb8O11Br2 ; Cl O Sb ; Sb8O11Cl2 ; Monocristal ; Composé ternaire ; Antimoine Oxybromure ; Antimoine Oxychlorure ; Réseau triclinique ; Modèle structure ; Structure cristalline ; Etude expérimentale ;

Mots-clés d'auteur / Author Keywords

Onoratoite ; Antimony ; Oxohalide ; Stereochemically active lone pair ;

Localisation / Location

INIST-CNRS, Cote INIST : 11118, 35400014241773.0150