Question

10. Give a structure or structures consistent with the following sets of NMR data. NB: Signals with four or more peaks are commonly referred to as multiplets A 13C NMR 1H NMR 204.4 d 9.79,d, J=1.1 Hz, 1H 141.5, s 7.3, m, 5H 128.3, d 5.25, d, J=3.8 Hz, 1H 125.8 d (2) 2.8, bs, 1H (exchanges) 125.1, d,(2) 2.7, m, 1H 72.5, d 1.22, d, J=7.3 Hz, 3 H 53.0, d 7.4, q (b) The molar absorptivity for 1,3-pentadiene in hexane is 26,000 M-1cm-1 at its maximum absorbance at 224 nm. A sample prepared in hexane shows an absorbance of 0.850 at 224 nm. What is the concentration of the sample?

Answer 1