BIS(4-METHOXYPHENYL)PHOSPHINIC ACID

Mass

MS-IW-0010          
bis(p-methoxyphenyl)phosphinic acid
C14H15O4P           (Mass of molecular ion:    278)

   Source Temperature: 220 °C
   Sample Temperature: 180 °C
   Direct, 75 eV

      39.0       1.6
      47.0       1.4
      50.0       1.2
      51.0       1.6
      63.0       3.6
      64.0       4.2
      65.0       3.7
      76.0       1.1
      77.0       9.6
      78.0       3.6
      79.0       1.0
      92.0       5.5
      93.0       1.3
     107.0       4.1
     108.0       6.0
     109.0       2.8
     123.0       1.8
     124.0      10.4
     128.0       1.7
     139.0       1.2
     155.0       2.7
     156.0       1.0
     171.0       5.7
     199.0       3.9
     216.0       2.8
     217.0       1.7
     229.0       3.3
     244.0       2.1
     245.0       6.7
     246.0       1.5
     247.0       2.9
     259.0      48.8
     260.0       7.9
     261.0       2.5
     262.0       1.3
     263.0      15.7
     264.0       2.5
     277.0      84.4
     278.0     100.0
     279.0      17.7
     280.0       2.3
     367.0       1.1

Assign. Shift(ppm) A 10. B 7.638 C 7.009 D 3.776 J(B,C)=8.8HZ J(B,P-31)=11.5HZ J(C,P-31)=2.4HZ

     Hz     ppm     Int.

   3062.91   7.664    119
   3061.08   7.660     44
   3056.13   7.648     48
   3054.12   7.642    145
   3051.37   7.636    134
   3049.54   7.631     48
   3044.59   7.619     46
   3042.76   7.614    128
   3040.20   7.608     20
   2806.84   7.024    142
   2804.46   7.018    157
   2802.45   7.013     52
   2800.07   7.007     50
   2798.05   7.002    150
   2795.67   6.996    135
   2793.29   6.990     21
   1509.29   3.777   1000