Internal rotation in molecules

THE NATURE OF BOND ORBITALS AND THE ORIGIN OF POTENTIAL BARRIERS TO INTERNAL ROTATION IN MOLECULES... 

Although Hq. (152) can in principle be solved by the development of y(x) in a power series, the periodicity of the argument of cosine, namely, 2jc = Na complicates the problem. The most important application of Mathieu s equation to internal rotation in molecules is in the analysis of the microwave spectra of gases and vapors. The needed solutions to equations such as Eq. (152) are usually obtained numerically. 

Swalen, J.D., and C. C. Costain Internal rotation in molecules with two... 

Dreizler, H. Topics in Current Chem. 10, 59 (1968) Orville-Thomas, W.J. Internal Rotation in Molecules. London Wiley 1974. 

In the preface of his book devoted to internal rotation in molecules Orville-Thomas pointed out excellently that In the first half of this century, chemical... 

Problem of Barriers to Internal Rotation in Molecules (Wilson). 2 367... 

Veillard, A. Internal rotation in molecules, p. 404. Orville-Thomas, W. J. (ed.). London Wiley 1974... 

A. Veillard, in Internal Rotation in Molecules , ed. W. J. Orville-Thomas, Wiley, London, 1974, p. 385. 

Abraham, R.J. Bretschneider, E. Medium Effects on Rotational and Conformational Equilibria, in Internal Rotation in Molecules Orville-Thomas, W.J., Ed. Wi ley-Interscience New York, 1974, pp. 481-584. 

Orville-Thomas WJ (1974) Internal Rotation in Molecules. Wiley Sons, London... 

Radom et al. (234) seem to have been the first to interpret internal rotation in molecules exhibiting the anomeric effect by means of a Fourier expansion of the potential function. They performed ab initio SCF MO calculations for a wide variety of molecules but without geometry optimization. It was found that internal rotation in ethane, propane, fluoroethane, and methylamine is... 

Basic constants - The new CODATA recommended values of the Fundamental Physical Constants (2006) and the most recent changes in lUPAC Standard Atomic Weights (2007). Molecular structure - A completely revised and expanded table of interatomic distances and bond angles in gas phase molecules and a new table of barriers to internal rotation in molecules. The table of bond dissociation energies has also been updated and a table of atomic radii has been added. 

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