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Predissociation in polyatomic molecules
Molecular Physics, 1972The complexity of polyatomic, as compared with diatomic, predissociation theory is attributed to the existence of more than one exit channel, or fragment internal excitation state. It is shown, for type I predissociation that both the relative populations of the exit channels and the spectroscopic line width may be expressed in terms of matrix elements
C.E. Caplan, M.S. Child
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2010
With an increasing number of atoms in a molecule, the complexity of the molecular structure and the many possibilities for different isomeric configurations of these atoms make investigations of polyatomic molecules a challenging task.
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With an increasing number of atoms in a molecule, the complexity of the molecular structure and the many possibilities for different isomeric configurations of these atoms make investigations of polyatomic molecules a challenging task.
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Directed Valence in Polyatomic Molecules
Physical Review, 1931The interactions of atoms in polyatomic molecules are described qualitatively. Particular attention is paid to atoms of the types of F, O, N, C, where the valences come from $p$ electrons. Directional effects are discussed, namely that the two valences of O, and the three of N, tend to be mutually at right angles, and the four of C have tetrahedral ...
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On the Dissociation of Polyatomic Molecules
The Journal of Chemical Physics, 1960The dissociation of a simple model of a linear four-atomic molecule is treated classically by considering the motion of configuration points in the configuration space of the molecule. The usual configurational criterion for dissociation, i.e., the crossing of a critical surface in configuration space, is used.
Robert J. Rubin, Kurt E. Shuler
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Electrons in molecules: polyatomics
2013This chapter begins by showing how symmetry considerations make it possible to construct molecular orbital diagrams for simple triatomics. In these molecules, the MOs extend over all the atoms—that is, the bonding is delocalized. In fact, it is a general feature of the MO approach that atomic orbitals on many atoms contribute to each MO. Unfortunately,
James Keeler, Peter Wothers
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Polyatomic Molecules: Towards an Understanding of Chemical Bonds in Polyatomic Molecules
2004The central problem of the chemical bond in polyatomic molecules is to clarify the relationship between constituent atoms and the character of the bonds between them. This problem has been studied on the basis of the valence bond (VB) theory, a generalization of the Heitler-London theory, and on the basis of the molecular orbital (MO) theory.
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The Entropy of Polyatomic Molecules
The Journal of Chemical Physics, 1934A general expression for the entropy of the polyatomic molecule, rigid in the sense that only one form with a given set of moments of inertia is possible, is tested by comparison of calculated and experimental values. The results are satisfactory for molecules with as many as seven rotational degrees of freedom.
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Rotation of Polyatomic Molecules
2015The effective Hamiltonian, rotational energies, transition selection rules, and notation for the rotational energy levels of an asymmetric top are derived and discussed [1, 2]. The effective Hamiltonian is factored into four sub-blocks by the Wang transformation.
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Electronic Spectra of Polyatomic Molecules
Reviews of Modern Physics, 1941Sponer, H., Teller, E.
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