Title of article :
Li2GeMo3O8: a novel reduced molybdenum oxide containing Mo3O13 cluster units
Author/Authors :
Gall, Philippe Institut des Sciences - Chimiques de Rennes - UMR 6226 CNRS – INSA Rennes – Université de Rennes 1, France , Gougeon, Patrick Institut des Sciences - Chimiques de Rennes - UMR 6226 CNRS – INSA Rennes – Université de Rennes 1, France
Abstract :
The crystal structure of the title compound, dilithium germanium trimolybdenum octaoxide, consists of distorted hexagonal-close-packed oxygen layers with stacking sequence ABAC along [001] that are held together by alternating lithium–germanium and molybdenum layers. The two Li+ and Ge4+ ions all have site symmetry 3m. and occupy, respectively, tetrahedral and octahedral sites in the ratio 2:1. The Mo atom has a formal oxidation state of +3.3 and occupies an octahedral site (site symmetry .m.) and forms strongly bonded triangular cluster units [Mo—Mo distance = 2.4728 (8) Å] involving three MoO6 octahedra that are each shared along two edges, constituting an Mo3O13 unit.
Keywords :
crystal structure , reduced molybdenum oxide , germanium , lithium , triangular Mo3 cluster
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
