4,4'-(Hexafluoroisopropylidene)diphthalic anhydride

Mass

MS-IW-3617          
4,4'-(hexafluoroisopropylidene)bis(phthalic anhydride)
C19H6F6O6           (Mass of molecular ion:    444)

   Source Temperature: 170 °C
   Sample Temperature: 140 °C
   Direct, 75 eV

      12.0       3.6
      18.0       2.4
      63.0       1.0
      74.0       2.5
      75.0       5.8
      81.0       1.3
      86.0       1.3
      87.0       1.2
      90.5       2.5
     103.0       1.2
     105.0       1.6
     105.5       2.8
     106.0       2.0
     111.0       1.2
     115.0       4.8
     115.5       3.1
     125.0       1.1
     129.5       1.9
     131.0       1.1
     161.0       1.9
     162.0       1.3
     178.0       9.9
     178.5       1.9
     180.0       1.5
     181.0       5.8
     210.0       1.2
     211.0       3.7
     212.0       2.5
     219.0       1.9
     230.0       6.9
     231.0       9.6
     232.0       1.4
     247.0       1.1
     250.0       1.2
     259.0       1.3
     275.0       1.2
     300.0       2.9
     303.0       1.5
     327.0       3.0
     328.0      13.7
     329.0       2.4
     344.0       1.1
     371.0       1.5
     381.0       1.1
     400.0     100.0
     401.0      19.8
     402.0       2.7
     425.0       1.7
     444.0      18.7
     445.0       4.0

Assign. Shift(ppm) A 7.831 B 7.698 C 7.643

     Hz     ppm     Int.

   3134.28   7.843    804
   3125.98   7.822   1000
   3076.66   7.699    623
   3058.23   7.653    341
   3050.17   7.633    288