scotty 22 - C hemist ry Compounds: Cycloalkanes and Their...

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Chemistry Compounds: Cycloalkanes and Their Stereochemistry A cycloalkane , or alicyclic compound (aliphatic cyclic), is a saturated cyclic hydrocarbon with the general formula C n H 2n (line angle formula). o In contrast to open-chain alkanes, where nearly free rotation occurs around C-C bonds, rotation is greatly reduced in cycloalkanes. o Physical Properties: Non-polar (C-H bond) Relatively inert Melting point and boiling point increase with increasing number of carbon atoms. o Chemical Properties: Combustion Halogenation Disubstituted cycloalkanes can therefore exist as cis-trans isomers . o The cis isomer as both substituents on the same face of the ring. o The trans isomer has substituents on opposite faces . Naming Cycloalkanes 1. Find the parent chain If the total number of carbon atoms in the noncyclic portion is greater than the number of carbons in the ring, the noncyclic portion becomes the parent (4-cyclobutyl-3,5-dimethylheptane). If the number of carbons in the noncyclic portion is the same as the cyclic
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This note was uploaded on 04/01/2011 for the course CHEMISTRY 2400 taught by Professor Staff during the Fall '10 term at Georgia State University, Atlanta.

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scotty 22 - C hemist ry Compounds: Cycloalkanes and Their...

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