Symmetry Orbitals and UV Selection Rules for the Polymethylene Chain
W. L. McCubbin · physica status solidi (b) · 1966
Abstract Basis functions for irreducible representations of the line group of polymethylene chain are presented. This work confirms the general features of a semi‐quantitative band structure given previously. The UV selection rules are derived and are found to support the earlier conjecture that the transition probability for optical transitions to the first unoccupied band is negligible. It is pointed out that the selection rules may also be used to predict the dichroism of the polymethylene crystal.