ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Relative momentum densities have been measured for the outermost occupied π orbitals of acetylene, propyne, 2-butyne, and perfluoro-2-butyne using the (e, 2e) technique with an improved multiple detector spectrometer. The results, when compared with suitably averaged quantum mechanical calculations, show systematic differences between the molecules which can be interpreted in terms of wave function averages and differences using the ΔB(r) functions. A striking feature of the data is the significant momentum density at zero momentum for all of the molecules, in contrast to the calculations that all show zero momentum density. Ground state molecular distortions are discussed as a possible cause of the effect.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.455520
