CH3 CH2 CH2CH3 CH3OCH, CH3 CH3 CH2CHO 沸点/℃ -0.5 8 49 CHa CoCH CH, CH,CH,OH 沸点/℃ 56 CH2 CH3 HO CH,OH OH CH 沸点/℃136.1 179.0 205.2 201.8
<2>IR C=0 1850~1700cm1(vs) 醛基C-H~2700cm-1 羰基与双键共轭特征吸收低频方向位移 (CH3)CHCH-C-CH3-O(CH3)C-CH-C-CHa c-H o/cm17171715 1690 1700 <3>NMR RCHO: 9-10 RCHCOCH, 2.0-2.5
12131415 2?20 1m25 5003002502001600140012001贿 4000 正辛醛的IR谱
<3>NMR sHY (1H) 8=10.4 10-87653 醛氢:δ=9~10
A/um 400342400200180-1600-140-1o0-m006 800 600 2800 图13-3苯乙酮的红外光谱 1.苯环C—H伸缩振动2.CH3仲缩振动3.C-O伸麴振动 4.苯环C—C伸缩振动5.一取代苯 CH3COCH, CH, 图13-4丁酬的核磁共振谱