Department of chemistry
The University of British Columbia
Faculty in University of British Columbia
(a) Electron momentum spectroscopy (EMS) is used to obtain electron densities (psi(p))2 f or individual atomic and molecular orbitals. This provides orbital imaging and a direct experimental evaluation of molecular wave functions. The method provides a sensitive probe of molecular structure, chemical bonding and reactivity in the chemically important outer spatial regions of the electron distribution. Recent applications are to molecules of biochemical and biomedical interest such as aminoacids and heterocyclic systems. Comparisons are made with SCF, CI and DFT calculations.