Question

Which of the following statement regarding conformers of meso-2, 3-butane diol and enantiomeric butane-2, 3-diol is true?

• A. Meso isomer forms stronger intermolecular H-bonds than enantiomeric form.
• B. Enantiomeric forms form stronger intramolecular H-bonds than meso form.
• C. Both forms have equally strong intramolecular H-bonds.
• D. None of the form stronger intramolecular H-bonds, rather they forms stronger intermolecular H-bonds.

Answer 1

The correct option is B Enantiomeric forms form stronger intramolecular H-bonds than meso form.

Enantiomeric form, the $two-C{H}_3$ repel two- OH inwards, which increases their ability to form intramolecular H-bond.