Question

need help drawing the structures for each

For each pair of spectra, first calculate the THD for the molecular formula. Then draw a structure which matches all features of both spectra (there may be more than one structure which fits). For partial credit, write out individual spectral interpretations on each spectrum, noting either presence (or absence) of FG's or bond types. Remember your calculated IHD!! (6 points each) 1. CsH1002: IHD LIQUID FILM 1962 19 1202 1914 1915 19 1172 13 | 111733 CH2 CH2 CH3 CH2 40 20 0 60 80 ppm 120 TTTT 180 160 140 200

Answer 1

1. C5H1002 IHD = NCH - XH = (5+) - 10/2 = 1 > 1 unsaturation IHO - is present.

looking at IR , we are getting Broad heak around 3200-3400 cm! → 0-4 stretching Sharp Band around 1700 cm it (c=0) stretch (Ketone) to 13 CNMR 210ppon feak Presence of Ketone group Peak at boppm * -o-lygp. Thus, these observations made us believe that the compound is; 0 CH₂ - C - CH₂ - CH₂ - CH₂-OH 4- ketopentano TR Explanation • 3200-3400 Cm : 20-H Stretch 2 900 cm :SB-C-H stretch • 1700 Can' :Dc=0 Stretch - 1050-1150 cm' : C-o stretch Calcohol) 13 CNMR • 210cm : Ketone character -stic peak • 62cm : O-CH₂ due to attachment o eletronegature . 40 Cm : CH₂ (methyl Ketone) • 26 cm in Ecthy 24 cm : un C- CH2 - CH2 - CH₂ mm o-atom