Journal article
Two closely related polymorphs of ammonium trifluorooxovanadate
Journal of solid state chemistry, v 276, pp 261-265
Aug 2019
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Two polymorphs of ammonium trifluorooxovanadate (NH4VOF3) were synthesized as single crystals by the reaction of ammonium metavanadate with vanadium in hydrofluoric acid. The two phases crystalize in the same space group (Pbam), have similar unit cell volumes (α-NH4VOF3:371 Å3, β-NH4VOF3:375 Å3 at 100 K), and similar total energies (difference of ∼2.2 meV per formula unit at 0 K). Both structures contain the [VOF3]nn− ladder motif that has been reported in phases such as KVOF3 and RbVOF3. The polymorphs are differentiated by the angle between two neighboring ladder motifs. Although the two polymorphs are structurally similar, selective synthesis is possible as longer reaction times favor β-NH4VOF3.
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•The crystal structures of two polymorphs of NH4VOF3 are reported.•Both polymorphs can be synthesized using hydrothermal methods.•Reaction time can be tuned to selectively synthesize each polymorph.
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Details
- Title
- Two closely related polymorphs of ammonium trifluorooxovanadate
- Creators
- Allison Wustrow - Northwestern UniversityJustin C. Hancock - Northwestern UniversityMichael Holland - Northwestern UniversityNenian Charles - Drexel UniversityJames M. Rondinelli - Northwestern UniversityKenneth R. Poeppelmeier - Northwestern UniversityJoseph H Hancock - Retail and Merchandising
- Publication Details
- Journal of solid state chemistry, v 276, pp 261-265
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Retail and Merchandising; Materials Science and Engineering
- Web of Science ID
- WOS:000473372400036
- Scopus ID
- 2-s2.0-85065625159
- Other Identifier
- 991019168680304721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Inorganic & Nuclear
- Chemistry, Physical