H-NMR - 1 H multiplet Hf Observed(ppm Predicted(ppm...

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HNMR trans- Cinnamic Acid CNMR- trans-Cinnamic Acid Literature (ppm) Observed (ppm) Predicted (ppm) Integration Multiplicity Assignment 12.3 N/O 10-13 1 H Singlet Ha 6.5 6.48 5.28+1.0+.06=6.34 1 H Dubblet Hb 7.84 7.81 5.28+1.43+.74=7.45 1 H Dubblet Hc 7.58 7.56 7.26+.03=7.29 2H Multiplet Hd 7.43 7.42 7.26-.03=7.23 2H Multiplet He 7.43 7.42 7.26-.10=7.16
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Unformatted text preview: 1 H multiplet Hf Observed (ppm) Predicted (ppm) Assignment 173.0 178.0 – 185.0 Ca 118.0 123.3 + 4.7 + -11.0 = 117.0 Cb 147.0 123.3 + 12.5 +9.0 = 144.8 Cc 134.0 128.5 + 9.5 = 138.0 Cd 128.53 128.5 + -.2 =128.3 Ce 129.11 128.5+ .2 = 128.7 Cf 131.0 128.5 + -.5 = 128.0 Cg...
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