自秋东精秋对 Branched Alkanes Lower b.p.with increased branching Higher m.p.with increased branching ■Examples: CH3 CH3-C-CH2-CH3 CH3~CH-CH2-CH2-CHs CH3 CH3 CHCH CH3 CH3 bp60°C CH3 CH3 bp58°C bp50°C mp-154°C mp-135°C mp-98°CBranched Alkanes ◼Lower b.p. with increased branching ◼Higher m.p. with increased branching ◼Examples: H CH3 CH CH3 CH2 CH2 CH3 bp 60°C mp -154°C CH3 CH CH3 CH CH3 CH3 bp 58°C mp -135°C bp 50°C mp -98°C CH3 C C 3 CH3 CH2 CH3