Constitutional isomer

Definition

Constitutional isomers are compounds that have the same molecular formula but differ in the connectivity of their atoms. This means they have different physical and chemical properties despite having the same number of each type of atom.

Related terms

Stereoisomer:

Isomers that have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in space.

Alkane:

A hydrocarbon compound consisting only of hydrogen and carbon atoms arranged in a tree-like structure (acyclic) without any branches or rings, connected by single bonds.

Functional Group:

A specific group of atoms within a molecule that is responsible for the characteristic chemical reactions of that molecule