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Crystal structure of guanidinium hexafluoridovanadate(III), (CN 3 H 6 ) 3 [VF 6 ]: an unusual hybrid compound related to perovskite
Author(s) -
Black Cameron,
Lightfoot Philip
Publication year - 2017
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/s2053229617001711
Subject(s) - octahedron , crystal structure , crystallography , perovskite (structure) , context (archaeology) , protonation , vanadium , chemistry , supramolecular chemistry , hydrogen bond , crystal engineering , materials science , molecule , inorganic chemistry , ion , organic chemistry , paleontology , biology
Vanadium fluorides with novel crystal–chemical features and interesting physical properties can be prepared by solvothermal synthetic routes. The title compound, guanidinium hexafluoridovanadate(III), has a cubic structure (space group Pa ), exhibiting isolated regular VF 6 octahedral units, which are hydrogen bonded to protonated guanidinium moieties. Although the VF 6 octahedral units are not linked directly together, there are structural similarities between this crystal structure and those of the wider family of perovskite materials, in particular, hybrid perovskites based on extended ligands such as cyanide. In this context, the octahedral tilt system of the present compound is of interest and demonstrates that unusual tilt systems can be mediated via `molecular' linkers which allow only supramolecular rather than covalent interactions.