Chapter 3 Structure and Stereochemistry of Alkanes Organic Chemistry, 6th Edition L. G. Wade, Jr. Chapter 3 * Classification Review Chapter 3 Chapter 3 * Alkane Formulas All C-C single bonds Saturated with hydrogens Ratio: CnH2n+2 Alkane homologs: CH3(CH2)nCH3 Same ratio for branched alkanes => Chapter 3 Chapter 3 * Common Names Isobutane, ?isomer of butane? Isopentane, isohexane, etc., methyl branch on next-to-last carbon in chain. Neopentane, most highly branched Five possible isomers of hexane, 18 isomers of octane and 75 for decane! => Chapter 3 Chapter 3 * Alkane Examples => Chapter 3 Chapter 3 * IUPAC Names Find the longest continuous carbon chain.