Learn about financial support for future and current high school chemistry teachers. Let ACS help you navigate your career journey with tools, personal coaching and networking. It can also be prepared by allowing fluorine to react … 1376-7. It can also be made by reacting antimony trifluoride with fluorine. The Sb-F bonds are 2.02 Å within the eight-membered Sb4F4 ring; the remaining fluoride ligands radiating from the four Sb centers are shorter at 1.82 Å. Antimony pentafluoride has also been used in the first discovered chemical reaction that produces fluorine gas from fluoride compounds: The driving force for this reaction is the high affinity of SbF5 for F−, which is the same property that recommends the use of SbF5 to generate superacids. This effect is illustrated by the oxidation of oxygen:[9]. "Dioxygenyl Salts", National Institute for Occupational Safety and Health, "Chemical Database - Antimony Pentafluoride", National Pollutant Inventory - Antimony and compounds fact sheet, National Pollutant Inventory - Fluoride compounds fact sheet, https://en.wikipedia.org/w/index.php?title=Antimony_pentafluoride&oldid=981999928, Articles with changed ChemSpider identifier, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, Releases hydrofluoric acid upon contact with water or biological tissues, This page was last edited on 5 October 2020, at 16:41. If your favorite molecule is not in our archive, please send an email to motw@acs.org. Although it is only weakly basic, [SbF6]− does react with additional SbF5 to give a centrosymmetric adduct: SbF5 reacts violently with many compounds, often releasing dangerous hydrogen fluoride. This molecule was part of our Fluorosulfuric acid and Antimony pentafluoride set, American Association of Chemistry Teachers, Reactions: Chemistry Science Videos & Infographics, Antimony pentafluoride and Fluorosulfuric acid. SbF5 is a strong Lewis acid, exceptionally so toward sources of F− to give the very stable anion [SbF6]−, called hexafluoroantimonate. [6], In the gas phase, SbF5 adopts a trigonal bipyramidal structure of D3h point group symmetry (see picture). * Antimony Pentafluoride can cause headaches, nausea, This strong Lewis acid is nasty: It reacts violently with water, attacks the skin and eyes, and corrodes metals. This week’s molecules combine to make “magic”. Antimony pentafluoride is the inorganic compound with the formula SbF5. Can antimony pentafluoride be made by adding hydrogen fluoride to antimony trifluoride? [6] Structure and chemical reactions. Structure and chemical reactions. Funding to support the advancement of the chemical sciences through research projects. Antimony pentafluoride is prepared by treating antimony pentachloride with excess anhydrous hydrogen fluoride. Figure 2: Antimony pentafluoride. At Case Western, the researchers discovered that a mixture of HSO3F and SbF5easily dissolves paraffins. It is made by reacting antimony pentoxide or antimony pentachloride with hydrofluoric acid. Thank you! Advance your career with professional development courses. It is corrosive to the skin and eyes. For your security, this online session is about to end due to inactivity. Now offered virtually. Learn how ACS can help you stay ahead in the world of chemistry. He received the Nobel Prize in Chemistry in 1994 for his pioneering work. This week’s molecules combine to make “magic”. Collaborate with scientists in your field of chemistry and stay current in your area of specialization. Explore the interesting world of science with articles, videos and more. Vol. Handbook of Preparative Inorganic Chemistry, 2nd Ed. [10][11], InChI=1/5FH.Sb/h5*1H;/q;;;;;+5/p-5/rF5Sb/c1-6(2,3,4)5, Except where otherwise noted, data are given for materials in their. The material adopts a more complicated … It is used to make very strong acids. Chemistry at Home Viewed 87 times 1 $\begingroup$ I was looking at how the strongest acid was made and I found something I … Technical Divisions ACS is committed to helping combat the global COVID-19 pandemic with initiatives and free resources. It is ≈1000 times stronger than pure sulfuric acid, which puts it in the class of superacids. Olah went on to do extensive research on carbocations at Case Western and then the University of Southern California (Los Angeles). ACS-Hach Programs 1. p. 200. * Antimony Pentafluoride is a CORROSIVE CHEMICAL and contact can severely irritate and burn the skin and eyes with possible eye damage. The liquid contains polymers wherein each Sb is octahedral, the structure being described with the formula [SbF4(μ-F)2]n ((μ-F) denotes the fact that fluoride centres bridge two Sb centres). The antimony pentafluoride is separated from the volatile byproducts by fractional distillation. See our Browser Support/Compatibility page for supported browsers list. In the gas phase, SbF 5 adopts a trigonal bipyramidal structure of D 3h point group symmetry (see picture). It can also be prepared from antimony trifluoride and fluorine. * Exposure to Antimony Pentafluoride can irritate the nose, mouth, throat and lungs causing coughing, wheezing and/or shortness of breath. Find a chemistry community of interest and connect on a local and global level. Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. [4], Antimony pentafluoride is prepared by the reaction of antimony pentachloride with anhydrous hydrogen fluoride:[5], It can also be prepared from antimony trifluoride and fluorine. In the gas phase, SbF 5 adopts a trigonal bipyramidal structure of D 3h point group symmetry (see picture). [8], In the same way that SbF5 enhances the Brønsted acidity of HF, it augments the oxidizing power of F2. Ask Question Asked 1 year, 5 months ago. Network with colleagues and access the latest research in your field. It is ≈1000 times stronger than pure sulfuric acid, which puts it in the class of superacids. Sabina C. Grund, Kunibert Hanusch, Hans J. Breunig, Hans Uwe Wolf "Antimony and Antimony Compounds" in Ullmann's Encyclopedia of Industrial Chemistry 2006, Wiley-VCH, Weinheim. ACS Professional Education It is notable for its Lewis acidity and its ability to react with almost all known compounds. Uses. To extract hydride groups (hydrogen anions) from organic compounds, they needed a strong, but poorly nucleophilic, acid. It can also be prepared from antimony trifluoride and fluorine. The crystalline material is a tetramer, meaning that it has the formula [SbF4(μ-F)]4. NMR spectra of the solutions showed that the acidic combination cleaved the long-chain alkanes, and the fragments isomerized to form stable tert-butyl cations (Me3C+). The material adopts a more … Edwards, A. J.; Taylor, P. "Crystal structure of Antimony Pentafluoride" Journal of the Chemical Society, Chemical Communications 1971, pp. The second molecule, antimony pentafluoride (SbF5), was first reported in 1904. Learn More. Learn more about this molecule from CAS, the most authoritative and comprehensive source for chemical information. Shamir, J.; Binenboym, J. Its chief use is the fluorination of organic compounds. Reactions: Chemistry Science Videos & Infographics [SbF6]− is a weakly coordinating anion akin to PF6−. The material adopts a more complicated structure in the liquid and solid states. Explore chemistry education resources by topic that support distance learning. The molecule can be notable for its current or historical importance or for any quirky reason. It is extremely corrosive. Uncover the Chemistry in Everyday Life, Recognizing and celebrating excellence in chemistry and celebrate your achievements. Promoting excellence in science education and outreach. This result was so spectacular that the chemists dubbed the mixture “magic acid”. If you do not respond, everything you entered on this page will be lost and you will have to login again. The first, fluorosulfuric acid (HSO 3 F; also called fluorosulfonic acid) is an extremely strong Brønsted acid that has been known since the late 19th century. Olah, G. A.; Prakash, G. K. S.; Wang, Q.; Li, X.-y. Antimony pentafluoride is prepared by the reaction of antimony pentachloride with anhydrous hydrogen fluoride: [5] SbCl 5 + 5 HF → SbF 5 + 5 HCl. Find awards and scholarships advancing diversity in the chemical sciences. So where’s the magic? Antimony pentafluoride is prepared by the reaction of antimony pentachloride with anhydrous hydrogen fluoride: SbCl 5 + 5 HF → SbF 5 + 5 HCl. Launch and grow your career with career services and resources. Active 1 year, 5 months ago. It can protonate and dissolve almost all organic compounds and has several industrial uses, including catalysis and hydrofluorination. This colourless, viscous liquid is a valuable Lewis acid and a component of the superacid fluoroantimonic acid, the strongest known acid, formed when mixing liquid HF with liquid SbF5 in a 2:1 ratio. Safety. Antimony pentafluoride reacts with most chemical compounds.