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Hydrocarbon Spectral Database, Table 2.1
Table 2.1. Determinable rotational and centrifugal distortion constants (P4) employed by various workersa
| Kivelson-Wilson Parameters for planar molecules | Kirchhoff parameters (following Watson [15]) | Watson parameters [16] |
|---|---|---|
| A′ | A | |
| B′ | B | |
| C′ | C | |
| τaaaa | τaaaa | ΔJ |
| τbbbb | τbbbb | ΔJK |
| τabab | τcccc | ΔK |
| τaabb | τ1 = τ′aabb + τ′bbcc + τ′ccaa | δJ |
| τaabb | τ2 = (A′ / S) τ′bbcc + (B′ / S) τ′aacc + (C′ / S) τ′aabb | δK |
| aFor conversion between the various sets of parameters see References [4], [9], [10], and [17]. | ||
Created April 23, 2018, Updated August 18, 2025