four-membered ring

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• four-membered ring — keturnaris žiedas statusas T sritis chemija apibrėžtis Iš keturių atomų sudarytas žiedas. atitikmenys: angl. four membered ring rus. четырехчленное кольцо …   Chemijos terminų aiškinamasis žodynas

• four-membered — adjective of a chemical compound having a ring with four members • Syn: ↑4 membered • Similar to: ↑membered …   Useful english dictionary

• Ring strain — is an organic chemistry term that describes the destabilization of a cyclic molecule such as a cycloalkane due to the non favorable high energy spatial orientations of its atoms. Non cyclic molecules do not exhibit ring strain because their… …   Wikipedia

• Carbon ring — Carbon rings are rings of carbon atoms. Rings of five and six carbons are by far the most common, as they allow bond angles close to the ideal angle of 109.5 degrees. Rings of three and four are possible, but with bond angles of 60 and 90 degrees …   Wikipedia

• 4-membered — adjective of a chemical compound having a ring with four members • Syn: ↑four membered • Similar to: ↑membered …   Useful english dictionary

• organosulfur compound — ▪ chemical compound Introduction also spelled  organosulphur compound , also called  organic sulfur compound   a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… …   Universalium

• epoxy — Chemical term describing an oxygen atom bound to two linked carbon atoms Generally, any cyclic ether, but commonly applied to a 3 membered ring; specifically, a three membered ring is an oxirane, a four membered …   Medical dictionary

• Alpha-Pinene — Chembox new Name = alpha Pinene ImageFile1 = Alpha Pinene Isomers.svg ImageFileL1 = (1S) (−) alpha pinene from xtal 3D balls.png ImageSizeL1 = 100px ImageFileR1 = (−) alpha pinene 3D balls.png ImageSizeR1 = 100px IUPACName = (1 S ,5 S ) 2,6,6… …   Wikipedia

• 1,3,2,4-Dithiadiphosphetane 2,4-disulfides — Ball and stick model of Fc2P2S4, diferrocenyl 1,3,2,4 dithiadiphosphetane 2,4 disulfide 1,3,2,4 Dithiadiphosphetane 2,4 disulfides are a class of four membered ring compounds which contain a P2S2 ring, many of these compounds are able to act as… …   Wikipedia

• Ab initio quantum chemistry methods — are computational chemistry methods based on quantum chemistry.[1] The term ab initio was first used in quantum chemistry by Robert Parr and coworkers, including David Craig in a semiempirical study on the excited states of benzene.[2][3] The… …   Wikipedia

• Tetrasulfur tetranitride — Tetrasulfur tetranitride …   Wikipedia