Centrifugal and Coriolis effects on level cluster patterns for T (ν3) rovibrational bands in spherical top molecules

Abstract
Fundamental T3) type high‐J rovibrational fine structure is derived for a range of values of the Coriolis and [2×2]4 centrifugal constants. The theory of level clusters is developed further. Correlations are made between cluster states corresponding to well separated P+, Q0, and R branches, and the opposite case in which Π± and Σ0 labels are appropriate.