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MassMS-NW-7738 endo-bicyclo(2.2.2)oct-5-ene-2,3-dicarboxylic anhydride C10H10O3 (Mass of molecular ion: 178)
Source Temperature: 160 °C Sample Temperature: 120 °C Direct, 75 eV
26.0 1.7 27.0 5.8 28.0 1.3 38.0 1.5 39.0 10.7 40.0 1.1 41.0 2.0 50.0 4.4 51.0 10.1 52.0 7.5 53.0 2.4 55.0 1.1 63.0 2.4 65.0 2.8 77.0 9.6 78.0 100.0 79.0 19.6 80.0 31.7 81.0 2.1 91.0 9.4 92.0 1.8 100.0 14.8 103.0 1.1 105.0 3.1 106.0 24.4 107.0 2.1 134.0 2.0 150.0 1.2 178.0 12.3 179.0 1.9
400 MHz in CDCl3
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1H NMR 399.65 MHz C10 H10 O3 0.040 g : 0.5 ml CDCl3 endo-bicyclo(2.2.2)oct-5-ene-2,3-dicarboxylic anhydride 
Assign. Shift(ppm)
A 6.316 B 3.228 C 3.139 D *1 1.607 E *1 1.415
Hz ppm Int.2533.57 6.340 70 2528.32 6.327 777 2525.15 6.319 693 2523.68 6.315 763 2520.63 6.308 801 2515.38 6.294 72 1291.75 3.233 327 1290.28 3.229 362 1288.94 3.226 360 1287.60 3.222 333 1256.23 3.144 878 1254.39 3.139 1000 1252.81 3.135 784 657.23 1.645 34 655.03 1.640 57 653.93 1.637 93 652.71 1.634 93 650.27 1.628 160 649.05 1.625 188 647.71 1.621 371 646.24 1.618 300 645.02 1.614 146 641.36 1.605 239 640.14 1.602 492 638.79 1.599 434 637.57 1.596 335 635.13 1.590 130 633.79 1.586 140 632.81 1.584 88 630.62 1.578 43 617.43 1.545 55 590.33 1.478 49 579.22 1.450 38 575.20 1.440 75 571.66 1.431 203 569.09 1.424 376 567.50 1.420 418 566.16 1.417 234 563.11 1.410 115 561.52 1.406 281 559.94 1.402 407 558.35 1.398 179 555.79 1.391 130 552.37 1.383 41
in CDCl3
KBr disc
nujol mull
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