Inversion centre
= Inversion centre
A point such that replacing every position $\mathbf r$ relative to it by $-\mathbf r$ leaves the structure unchanged. Molecular orbitals can then be classified as $g$ or $u$ according to their <parity>.
= Inversion centre
A point such that replacing every position $\mathbf r$ relative to it by $-\mathbf r$ leaves the structure unchanged. Molecular orbitals can then be classified as $g$ or $u$ according to their <parity>.