Science, Tech, Math › Science Aryl Group Definition in Chemistry Print Andrew Brookes / Getty Images Science Chemistry Chemical Laws Basics Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. Learn about our Editorial Process Updated on August 11, 2019 An aryl group is a functional group derived from a simple aromatic ring compound where one hydrogen atom is removed from the ring. Usually, the aromatic ring is a hydrocarbon. The hydrocarbon name takes the -yl suffix, such as indolyl, thienyl, phenyl, etc. An aryl group is often simply called an "aryl". In chemical structures, the presence of an aryl is indicated using the shorthand notation "Ar". This is also the same as the symbol for the element argon but doesn't cause confusion because it's used in the context of organic chemistry and because argon is a noble gas, and thus inert. Alkenyl Group in Chemistry By Anne Marie Helmenstine, Ph.D. Read More The process of attaching an aryl group to a substituent is called arylation. Examples: The phenyl functional group (C6H5) is an aryl functional group derived from benzene. The napththyl group (C10H7) is the aryl group derived from naphthalene. Cite this Article Format mla apa chicago Your Citation Helmenstine, Anne Marie, Ph.D. "Aryl Group Definition in Chemistry." ThoughtCo, Feb. 16, 2021, thoughtco.com/definition-of-aryl-group-604794. Helmenstine, Anne Marie, Ph.D. (2021, February 16). Aryl Group Definition in Chemistry. Retrieved from https://www.thoughtco.com/definition-of-aryl-group-604794 Helmenstine, Anne Marie, Ph.D. "Aryl Group Definition in Chemistry." ThoughtCo. https://www.thoughtco.com/definition-of-aryl-group-604794 (accessed March 28, 2024). copy citation