ORGANIC CHEMISTRY Chapter 4 o Straight-chain alkanes norma alkanes o Unbranched-chain alkanes o Constitutional isomers CH3-CH,-CH-CH,CH, n-Pentane CH3-CH-CH2-CH3 Isopentane CH CH3 CH3-C-CH Neopentane CH Department of Chemistry, Xiamen UniversityORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 4 Straight-chain alkanes — “normal” alkanes Unbranched-chain alkanes Constitutional isomers CH3 CH2 CH2 CH2 CH3 n-Pentane CH3 CH CH2 CH3 CH3 Isopentane CH3 C CH3 CH3 CH3 Neopentane