6-甲基-2,4-庚二酮(3002-23-1)核磁图(¹³CNMR)

Mass

MS-NW-3312          
6-methyl-2,4-heptanedione
C8H14O2             (Mass of molecular ion:    142)

   Source Temperature: 280 °C
   Sample Temperature: 180 °C
   Reservoir, 75 eV

      15.0       3.2
      27.0       7.9
      29.0       7.6
      31.0       2.0
      39.0       7.7
      40.0       1.4
      41.0      16.2
      42.0       3.5
      43.0      65.0
      44.0       1.5
      53.0       1.2
      55.0       1.9
      56.0       1.9
      57.0      24.5
      58.0      10.1
      67.0       1.6
      69.0       4.2
      71.0       2.8
      72.0       2.2
      84.0       1.3
      85.0     100.0
      86.0       4.7
     100.0      24.3
     101.0       1.5
     109.0       1.2
     127.0      14.2
     128.0       1.2
     142.0      10.8
     143.0       1.1

Assign. Shift(ppm) B 5.490 C 3.565 D 2.390 E 2.230 F 2.057 J 0.948 K 0.926 impurity signals between 2.15 and 2.1 ppm removed.

     Hz     ppm     Int.

   2194.21   5.491    470
   1424.93   3.566     93
    958.98   2.400     57
    952.03   2.383     66
    891.48   2.231    186
    841.55   2.106     28
    840.33   2.103     59
    834.23   2.088     76
    831.91   2.082     32
    828.13   2.073     91
    826.17   2.068     75
    822.27   2.058   1000
    814.94   2.040     34
    813.60   2.036     42
    803.83   2.012     29
    381.96   0.956    900
    375.49   0.940    830
    373.54   0.935    337
    366.82   0.918    245