n→σ*跃迁（含杂原子) 入max E 入max E nm nm H2O 167 1480 CHOCH3 184 2520 CHOH 183 150 CHgNH2 215 600 CHgCI 173 200 (CH3)2NH 220 100 CHgBr 204 200 (CHg)3N 227 900 CHgl 258 365n→σ* 跃迁（含杂原子） CH3 I 258 365 CH3Br 204 200 (CH3 )3N 227 900 CH3Cl 173 200 (CH3 )2NH 220 100 CH3OH 183 150 CH3NH2 215 600 H2O 167 1480 CH3OCH3 184 2520 ε λmax nm ε λmax nm