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NMIR spectrum: 'H NMR (400MHz, Chloroforn-d) δ: 7.75( d,J=16.0 Hz,1H), 7.66−7.60( m,2H), 7.46−7.37( m,3H), 7.09( d,J=16.
Posted: Fri Jul 15, 2022 4:47 pm
by answerhappygod
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NMIR spectrum: 'H NMR (400MHz, Chloroforn-d) δ: 7.75( d,J=16.0 Hz,1H), 7.66−7.60( m,2H), 7.46−7.37( m,3H), 7.09( d,J=16.0 Hz,1H). Q1) The doublets at 7.75ppm and 7.09ppm are on the alkene (the multiplets at 7.93ppm and 7/45ppm are of the phenyl rings). What geometry is expected (E,E,E,Z, or Z,Z) ? Explain. Q2) Draw the molecular structure of dibenzalacetone with the geometry identified above, and assign all the peaks (Note: some of the peaks are overlapping-but identify which peaks are overlapping).