Tutorial n°2 (Tuesday p.m): VB applications (A. Shurki + D. Danovitch)

To the Tutors

Philippe's remark on the initially proposed tutorial. are included in bold.

Qualitative

Computational

Allyl cation : VB 3 configuration (3rd configuration has a large weight).
Benzyl radical with most spin alternant determinants (2 determinants) (p228 of The Book) show spin location. Objection : this uses Heisenberg spin hamiltonian theory, a topic that we do not teach.
H2O lone pairs : compute H2O+ states (2 configurations mixing) Objection : did you try to do that ? If we let the orbitals optimize themselves, I guess we will converge to the MO solution with weight 1.0, the other structure with weigt 0.0. The H2O+ states would better be done as qualitative exercises.
R-X bond dissociation to R. .X and R(+) (-)X for stable ionic dissociation ... via solvent effects? (is that possible with xiamen ?)

(trash: * O2 paradigm : compute singlet - triplet gap : too hard)

Here is a image example

Image example: Allyl Cation MO's

Th