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2,5-二溴-1,4-二甲基苯

产品名称 2,5-二溴-1,4-二甲基苯

CAS号1074-24-4

分子式C8H8Br2

分子量263.96

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  • Mass

    MS-NW-8730          
    2,5-dibromo-p-xylene
    C8H8Br2             (Mass of molecular ion:    262)
    

       Source Temperature: 120 °C
       Sample Temperature:  80 °C
       Direct, 75 eV
    

          17.0       1.3
          18.0       7.4
          27.0       1.6
          38.0       1.5
          39.0       3.3
          50.0       6.1
          51.0      23.6
          51.5       2.4
          52.0       5.6
          53.0       1.7
          61.0       1.0
          62.0       2.5
          63.0       5.2
          74.0       2.4
          75.0       3.1
          76.0       2.9
          77.0      14.6
          78.0       6.3
          80.0       1.3
          82.0       1.2
          87.0       1.1
          89.0       1.1
          90.0       1.1
          91.0       2.8
          91.5       1.1
          92.0       1.8
         101.0       1.0
         102.0       6.5
         103.0      19.0
         104.0      23.8
         105.0       2.8
         130.0       1.4
         131.0       3.4
         132.0       2.8
         149.0       2.5
         164.0       1.7
         182.0       3.3
         183.0      49.7
         184.0       8.1
         185.0      48.5
         186.0       5.0
         261.0       1.7
         262.0      51.1
         263.0       8.1
         264.0     100.0
         265.0      10.5
         266.0      49.0
         267.0       4.3
    

400 MHz in CDCl3


  • 1H NMR 399.65 MHz
    C8 H8 Br2 0.035 g : 0.5 ml CDCl3
    2,5-dibromo-p-xylene
    ChemicalStructure
        Assign.     Shift(ppm)
    A 7.377 B 2.319

         Hz     ppm     Int.
    

       2948.24   7.378    270
        926.76   2.319   1000
    

in CDCl3



KBr disc



nujol mull



4880 A,200 M,powder