problem 1: Describe the effect of Hydrogen bounding on vibrational frequencies with illustrations.
a) Describe the Anisotropic effects on Aceteline and Benzene compounds.
b) State chemical shift with proper illustrations.
problem 3: Describe the Mass spectral fragmentation of any three different kinds of organic molecules.
a) Justify disrotatory mode always mirror axis of symmetry where as con rotator mode always C2 − axis of symmetry with an illustration each.
b) Define superficial shift and autovafacial shift with an illustration each.
problem 5: Describe the structure elucidation and synthesis of the menthol.
problem 6: Give a brief account on the following terms:
a) Hofmann rearrangement.
b) Benzil-Benzilic acid rearrangement.
a) prepare down the Woodward–Fieser rules for computing absorption maxima of α, β unsaturated carbonyl compounds.
b) Describe steric effect in biphenyls.
c) Describe in detail the different types of stretching and bending vibrations in IR spectrum of carbonyl compounds, carboxylic acids and lactones.
d) describe the solvent effect on vibrational frequencies with illustrations.