L. Visscher et Kg. Dyall, RELATIVISTIC AND CORRELATION-EFFECTS ON MOLECULAR-PROPERTIES .1. THE DIHALOGENS F2, CL-2, BR-2, I-2, AND AT-2, The Journal of chemical physics, 104(22), 1996, pp. 9040-9046
A benchmark study of a number of relativistic correlation methods is p
resented. Bond lengths, harmonic frequencies, and dissociation energie
s of the molecules F-2, Cl-2, Br-2, I-2, and At-2 are calculated at va
rious levels of theory, using both the Schrodinger and the Dirac-Coulo
mb-(Gaunt) Hamiltonian. (C) 1996 American Institute of Physics.