Hexane and Hexene wavelength (um 35 44.5 55.5 6 910 1213141516 80 60 40 FFE4z-FF4ZO C-H bending CH(CH,).CH, C一H stretch (a)n-hexane 4000 3500 3000 2500 200018001600 140012001000 800 600 wavenumber(cm） wavelength(μm) 3.5 4.5 5.5 6 8 910 11 12 13141516 00 CH(CH)CH=CH 60 3080 (b)1-hexene =C一H stretch alkane C-H stretch 1642 C=C stretch C-H bending 计 4000 3500 3000 2500 200018001600140012001000 800 600 wavenumber(cm-) Hexane and Hexene