Connections between molecular structure and certain magnetic effects in molecules

Abstract

Several types of magnetic effects in molecules and their relation to molecular structure are discussed.Hyperfine structure in molecules with electronic angular momentum can give experimental determination of three independent parameters of the distribution of electronic angular momentum. These parameters are rather simply and directly related to the molecular electronic structure and hence afford critical tests for proposed structures. Fine structure for such molecules can also give useful information on electron distribution. 0 2 , NQ and OH are examples which will be discussed.

Circular Dichroism at Microwave Frequencies: Calculated Rotational Strengths for Transitions Up toJ= 10 for Some Oxirane Derivatives

“…However, the off-diagonal elements, which are required for RCD, have never been measured. The off-diagonal elements of the g tensor for the three chiral deuterated oxiranes were calculated from the experimental values of the g tensor for undeuterated oxirane using the method of Townes et al (13). Briefly, this is the method by which measurements of the diagonal elements of the g tensor can be used to determine the sign of molecular dipole moments.…”

Rotational Zeeman effect and Coriolis coupling in NeHCl and KrHCl

“…We refer to the ArHBr study [5] in particular for a full derivation of the Zeeman relationships appropriate for these linear, but wide-amplitude bending systems. For more general discussions of the rotational Zeeman effect we refer the reader to the earlier literature [10,13,14,15].…”

Hyperfine Structure in the Microwave Spectrum of NF3

“…Townes et al (16) and Townes and Schawlow function and the fluorine nuclear spin wavefunction, must (17) describe this phenomenon, and show that C I is expected transform as A 1 or A 2 (14, 15). motion of the electrons.…”