Resonance Darling-Dennison

M. S. Child I have moreover a question for Prof. Field. Given that the Darling-Dennison resonance between the symmetric and antisym-... 

For the water molecule, data on D.O and HDO were also used for H,S and H,Se no isotopic data were used, v is the Darling-Dennison resonance parameter. All data are in cm-1 errors in values are given in the last digits quoted. 

Nonetheless, it is still possible to perform the bifurcation analysis on the multiresonance Hamiltonian. In fact, the existence of the polyad number makes this almost as easy, despite the presence of chaos, as in the case of an isolated single Fermi or Darling-Dennison resonance. It is found [ ] that most often (though not always), the same qualitative bifurcation behaviour is seen as in the single resonance case, explaining why the simplified individual resonance analysis very often is justified. The bifurcation analysis has now been performed for triatomics with two resonances [60] and for C2H2 with a number of resonances [ ]. 

The Darling-Dennison resonances are essential for a correct representation of the bond dissociation anharmonicity in polyatomic molecules. The coefficient may also be... 

The C-H stretch first overtone region of cyclohexane has two strong peaks at 5697 cm (1755 nm) and 5791 cm (1727 nm). A number of smaller, additional peaks were also seen by curve resolution. The two strongest peaks are probably 2Va and 2Vg with the intensity of the symmetric band being intensified by Darling-Dennison resonance. 

Fermi Resonance, Darling-Dennison Resonance, and the Local Mode... 

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