Degenerative orbitals

Intermediate species in the gas phase may also be studied by electron resonance methods, although the spectra obtained are usually more complex than those observed with condensed phases. In small gaseous radicals and atoms with degenerate orbital states, the orbital angular momentum will not be quenched, and may make a contribution to the paramagnetism of the species. Even in orbitally non-degener-... 

Consider the form of the operator for a molecule with an orbitally degener-... 

As described in earlier discussions, the L parameter quantifies distortions in the axial direction, and is only strictly defined when the cluster is symmetric about the unique axis (for the cluster to be symmetric about the principal axis, the principal axis of rotation must be at least a 3-fold axis). The 5 electron species illustrate the effect of a distortion perpendicular to the principal axis. The electronic structure of these clusters is Is2 lpo lp > and consequently is orbitally degenerate. The Jahn-Teller theorem predicts that a distortion will occur to lift the degeneracy and lower the energy of the system. In order to lift the degener-... 

Let us first suppose that in a regular octahedral environment the eQ pair of d orbitals and the s orbital are degenerate, and consider what would happen to the lowest singlet state.3 Since the d(eg) and s orbitals are degen-... 

The superoxide ion (OJ) has been implicated in a number of degenerative conditions, including aging and Alzheimer s disease. Using molecular orbital theory, determine whether O2 is paramagnetic or diamagnetic, and then calculate its bond order. 

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