Triatomic molecules three-dimensional algebraic models

Figure 34. Local-mode coupling (according to the three-dimensional algebraic model) in a bent triatomic molecule for the first two vibrational polyads.

From the onset, the three-dimensional algebraic model presents a consistent treatment of this problem. Let us recall the Hamiltonian matrix for the first polyad of a linear triatomic molecules [Eq. (4.58)], written here in the symmetrical case, A = A = A2 and N = = N2 ... 

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