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II 8.6 8.4 8.2 8.0 7.8 7.6 7.4 7.2 ppm 8 6 5 4 3 2 1 ppm 8.540 8.540 8.528 8.528 7.828 00L 000 T 7.819 CO 90 90 86S L 7.586

please provide the chemical shift, splitting, how many protons in each peak, and calculate the J coupling constant for above spectrum.

The structure is

the 1H NMR was 400 MHz and solvent CDCl3.

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Answer #1

(14, 7.17, t, 24 of 2 tr = 3.6min) 07.59 (1H, d, do 4.800 ) 1 1 r 8.53(d, 1H, J = 4.8 Hz) 7.47 d. = 5.2mm) do doublet t- tripchemical shift value for doublet peak is the average value of the doublet peaks.

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