The curve showing energy change from the rotation of C2-C3 bond of 2 − methylbutane with all maxima and minima is to be sketched. Concept introduction: Newman projected two types of spatial arrangements of molecules which are staggered and eclipsed Newman projections. Staggered conformation is the arrangement of atoms or groups of atoms in a molecule resulting in a 60 ∘ dihedral angle. It is also called anti-coplanar transition or anti-conformation. It has low potential energy because of less torsional strain and hence, is more stable. Eclipsed conformation is the arrangement of atoms or groups of atoms in a molecule resulting in a 0 ∘ dihedral angle. It is also called syn-planar transition or gauche-conformation. It has high potential energy because of high torsional strain and hence, is less stable.

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Chapter 4, Problem 13PP

Interpretation Introduction

Interpretation:

The curve showing energy change from the rotation of C2-C3 bond of 2−methylbutane with all maxima and minima is to be sketched.

Concept introduction:

Newman projected two types of spatial arrangements of molecules which are staggered and eclipsed Newman projections.

Staggered conformation is the arrangement of atoms or groups of atoms in a molecule resulting in a 60∘ dihedral angle. It is also called anti-coplanar transition or anti-conformation. It has low potential energy because of less torsional strain and hence, is more stable.

Eclipsed conformation is the arrangement of atoms or groups of atoms in a molecule resulting in a 0∘ dihedral angle. It is also called syn-planar transition or gauche-conformation. It has high potential energy because of high torsional strain and hence, is less stable.

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