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Perrhenic acid
Names
IUPAC name
Tetraoxorhenic(VII) acid
Other names
Hydrated rhenium(VII) oxide
Identifiers
CAS Number
3D model (JSmol )
ChemSpider
ECHA InfoCard 100.033.968
EC Number
PubChem CID
RTECS number
CompTox Dashboard (EPA )
InChI=1S/2H2O.7O.2Re/h2*1H2;;;;;;;;; Y
Key: JOTGKJVGIIKFIQ-UHFFFAOYSA-N Y
InChI=1/2H2O.7O.2Re/h2*1H2;;;;;;;;;/rH4O9Re2/c1-10(2,3)9-11(4,5,6,7)8/h4-5H2
Key: JOTGKJVGIIKFIQ-SEUCOXMMAB
[OH2+][Re-2](=O)(=O)(=O)([OH2+])O[Re ](=O)(=O)=O
Properties
Chemical formula
H 4 Re 2 O 9 HReO4 (gas)
Molar mass
251.2055 g/mol
Appearance
Pale yellow solid
Boiling point
sublimes
Solubility in water
Soluble
Acidity (p K a -1.25[1]
Conjugate base
Perrhenate
Structure
Coordination geometry
octahedral-tetrahedral (solid)
Hazards
Occupational safety and health
Main hazards
Corrosive
GHS labelling
Pictograms
Signal word
Danger
Hazard statements
H302 , H314 , H332
Precautionary statements
P260 , P261 , P264 , P270 , P271 , P280 , P301+P312 , P301+P330+P331 , P303+P361+P353 , P304+P312 , P304+P340 , P305+P351+P338 , P310 , P312 , P321 , P330 , P363 , P405 , P501
NFPA 704
Flash point
Non-flammable
Related compounds
Related compounds
Manganese(VII) oxide
Technetium(VII) oxide
Rhenium(VII) oxide
Permanganic acid
Pertechnetic acid
Perchloric acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Perrhenic acid is the chemical compound with the formula Re 2 O 7 H 2 O )2 Re 2 O 7 HReO4 , and a species of this formula forms when rhenium(VII) oxide sublimes in the presence of water or steam.[2] Re 2 O 7 HReO4 H 2 O are formed, which contain tetrahedral ReO− 4 .[3] rhenium(VII) oxide are used interchangeably. Rhenium can be dissolved in nitric or concentrated sulfuric acid to produce perrhenic acid.
Properties [ edit ]
The structure of solid perrhenic acid is [O 3 3 H 2 O )2 .[4] oxide coordinated to water ; most often metal–oxo–aquo species are unstable with respect to their corresponding hydroxides :
M(O )(H 2 O ) → M(OH )2
The two rhenium atoms have different bonding geometries, with one being tetrahedral and the other octahedral , and with the water ligands coordinated to the latter.
Gaseous perrhenic acid is tetrahedral, as suggested by its formula HReO4 .
Reactions [ edit ]
Perrhenic acid or the related anhydrous oxide Re 2 O 7 dirhenium heptasulfide upon treatment with hydrogen sulfide :
Re 2 O 7 2 2 S 7 2 O
The heptasulfide catalyzes various reductions .[5]
Perrhenic acid in the presence of hydrochloric acid undergoes reduction in the presence of thioethers and tertiary phosphines to give rhenium(V ) complexes with the formula ReOCl3 L 2 .[6]
Perrhenic acid combined with platinum on a support gives rise to a useful hydrogenation and hydrocracking catalyst for the petroleum industry .[7] silica impregnated with a solution of perrhenic acid is reduced with hydrogen at 500 °C.[citation needed This catalyst is used in the dehydrogenation of alcohols and also promotes the decomposition of ammonia .
Catalysis [ edit ]
Perrhenic acid is a precursor to a variety of homogeneous catalysts , some of which are promising in niche applications that can justify the high cost of rhenium. In combination with tertiary arsines , perrhenic acid gives a catalyst for the epoxidation of alkenes with hydrogen peroxide .[8] oximes to nitriles .[9]
Other uses [ edit ]
Perrhenic acid is also used in the manufacture of x-ray targets.[10] [11]
See also [ edit ]
References [ edit ]
^ Greenwood, Norman N. ; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann . ISBN 978-0-08-037941-8
^ Beyer, H.; Glemser, O.; Krebs, B. "Dirhenium Dihydratoheptoxide Re 2 O 7 OH 2 2 Angewandte Chemie , International Edition English 1968, Volume 7, Pages 295 - 296. doi :10.1002/anie.196802951 .
^ Schwarz, D. E.; Frenkel, A. I.; Nuzzo, R. G.; Rauchfuss, T. B.; Vairavamurthy, A. (2004). "Electrosynthesis of ReS4 . XAS Analysis of ReS2 , Re 2 S 7 ReS4 ". Chemistry of Materials . 16 doi :10.1021/cm034467v .
^ Parshall, G. W.; Shive, L. W.; Cotton, F. A. (1997). Phosphine Complexes of Rhenium . Inorganic Syntheses . Vol. 17. pp. 110–112. doi :10.1002/9780470132487.ch31 . ISBN 9780470132487
^ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5 .
^ van Vliet, M. C. A.; Arends, I. W. C. E.; Sheldon, R. A. (1999). "Rhenium Catalysed Epoxidations with Hydrogen Peroxide: Tertiary Arsines as Effective Cocatalysts". J. Chem. Soc., Perkin Trans. 1 (3 ): 377–80. doi :10.1039/a907975k .
^ Ishihara, K.; Furuya, Y.; Yamamoto, H. (2002). "Rhenium(VII) Oxo Complexes as Extremely Active Catalysts in the Dehydration of Primary Amides and Aldoximes to Nitriles". Angewandte Chemie International Edition 41 16 ): 2983–2986. doi :10.1002/1521-3773(20020816)41:16<2983::AID-ANIE2983>3.0.CO;2-X . PMID 12203432 .
^ http://www.gehealthcare.com/usen/service/time_material_support/docs/Radplus2100.pdf [permanent dead link
^ X-ray#Sources
t
e
Rhenium(0)
Rhenium(I )
Rhenium(II )
Rhenium(III)
Rhenium(IV )
Rhenium(V )
Rhenium(VI )
Rhenium(VII)
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Perrhenic_acid&oldid=1230090297 " C a t e g o r i e s : ● P e r r h e n a t e s ● M i n e r a l a c i d s ● T r a n s i t i o n m e t a l o x o a c i d s H i d d e n c a t e g o r i e s : ● A l l a r t i c l e s w i t h b a r e U R L s f o r c i t a t i o n s ● A r t i c l e s w i t h b a r e U R L s f o r c i t a t i o n s f r o m M a r c h 2 0 2 2 ● A r t i c l e s w i t h P D F f o r m a t b a r e U R L s f o r c i t a t i o n s ● C S 1 G e r m a n - l a n g u a g e s o u r c e s ( de ) ● A l l a r t i c l e s w i t h d e a d e x t e r n a l l i n k s ● A r t i c l e s w i t h d e a d e x t e r n a l l i n k s f r o m M a r c h 2 0 1 8 ● A r t i c l e s w i t h p e r m a n e n t l y d e a d e x t e r n a l l i n k s ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● A r t i c l e s w i t h o u t E B I s o u r c e ● A r t i c l e s w i t h o u t K E G G s o u r c e ● A r t i c l e s w i t h o u t U N I I s o u r c e ● A r t i c l e s w i t h c h a n g e d C A S N o i d e n t i f i e r ● E C H A I n f o C a r d I D f r o m W i k i d a t a ● C h e m b o x h a v i n g G H S d a t a ● A r t i c l e s c o n t a i n i n g u n v e r i f i e d c h e m i c a l i n f o b o x e s ● C h e m b o x i m a g e s i z e s e t ● A l l a r t i c l e s w i t h u n s o u r c e d s t a t e m e n t s ● A r t i c l e s w i t h u n s o u r c e d s t a t e m e n t s f r o m A p r i l 2 0 1 1
● T h i s p a g e w a s l a s t e d i t e d o n 2 0 J u n e 2 0 2 4 , a t 1 5 : 3 7 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
