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A linear bridging angle in the pyrovanadate group within the crystal structure of Hg 2 V 2 Te 2 O 11
Author(s) -
Weil Matthias
Publication year - 2015
Publication title -
acta crystallographica section c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 17
ISSN - 2053-2296
DOI - 10.1107/s2053229615013406
Subject(s) - lone pair , crystallography , tetrahedron , bridging (networking) , crystal structure , atom (system on chip) , chemistry , group (periodic table) , stereochemistry , molecule , computer science , computer network , organic chemistry , embedded system
The title compound, dimercury(II) divanadium(V) ditellurium(IV) undecaoxide, Hg 2 V 2 Te 2 O 11 , is a new representative within the family of divalent oxovanadato(V)tellurates(IV). The anionic framework is made up of disphenoidal [TeO 4 ] polyhedra that are linked by corner‐sharing to two neighbouring pyrovanadate units, resulting in chains of six‐membered rings propagating parallel to [10]. The bridging O atom of the pyrovanadate unit is located on an inversion centre, leading to a staggered conformation and a linear V—O—V angle between the two [VO 4 ] tetrahedra. The anionic chains are connected by interjacent six‐coordinate Hg 2+ cations into a three‐dimensional framework. The 5 s 2 lone electron pair of the Te IV atom is stereochemically active and protrudes into the free space of the chain links.