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MassMS-NW-8048 diethyl 4,4'-azoxydibenzoate C18H18N2O5 (Mass of molecular ion: 342)
Source Temperature: 190 °C Sample Temperature: 170 °C Direct, 75 eV
18.0 1.7 27.0 2.4 28.0 2.6 29.0 20.0 39.0 3.0 50.0 3.1 51.0 1.9 63.0 4.7 64.0 3.3 65.0 21.2 66.0 1.3 75.0 5.8 76.0 11.5 77.0 5.5 78.0 1.4 79.0 1.9 81.0 1.5 89.0 1.5 90.0 4.5 91.0 4.3 92.0 3.5 93.0 8.2 103.0 33.2 104.0 13.0 105.0 2.0 107.0 2.2 108.0 1.2 109.0 5.7 117.0 2.8 118.0 3.4 119.0 2.5 120.0 1.6 121.0 19.0 122.0 1.9 126.0 4.6 135.0 4.3 137.0 7.0 141.0 1.2 149.0 100.0 150.0 10.2 151.0 1.4 152.0 1.1 153.0 1.6 163.0 3.1 165.0 7.9 166.0 1.3 168.0 2.0 169.0 3.6 177.0 17.5 178.0 1.9 179.0 1.4 193.0 3.6 195.0 1.2 196.0 1.0 212.0 1.1 213.0 2.6 240.0 1.4 241.0 4.4 242.0 1.0 268.0 1.9 269.0 3.3 281.0 3.5 285.0 3.9 286.0 1.2 297.0 10.9 298.0 2.2 314.0 6.0 315.0 1.2 326.0 11.3 327.0 2.4 341.0 2.2 342.0 30.5 343.0 6.4 344.0 1.0
400 MHz in CDCl3
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1H NMR 399.65 MHz C18 H18 N2 O5 0.041 g : 0.5 ml CDCl3 diethyl 4,4'-azoxydibenzoate 
Assign. Shift(ppm)
A 8.372 B 8.19 C *1 8.18 D *1 8.158 E *2 4.431 F *2 4.409 G *3 1.433 J *3 1.421
Hz ppm Int.3353.03 8.390 71 3350.83 8.385 389 3348.88 8.380 147 3346.80 8.375 34 3343.87 8.367 159 3341.92 8.363 498 3339.72 8.357 88 3280.15 8.208 117 3278.08 8.203 556 3276.37 8.199 248 3270.87 8.185 262 3268.31 8.178 802 3263.31 8.166 709 3260.99 8.160 139 3256.59 8.149 83 3255.00 8.145 118 3254.27 8.143 158 1781.74 4.459 142 1774.66 4.441 442 1772.71 4.436 184 1767.46 4.423 471 1765.50 4.418 462 1760.25 4.405 183 1758.42 4.400 440 1751.22 4.382 142 580.08 1.452 474 574.95 1.439 534 573.00 1.434 1000 567.87 1.421 986 565.92 1.417 525 560.67 1.403 453
in CDCl3
KBr disc
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