VB workshop tutorials program

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Instructors

  • Benoît Braida
  • Zhenhua Chen
  • Xun Chen
  • David Danovich
  • Stéphane Humbel (coordinator)
  • Mathieu Linares
  • Yirong Mo
  • Avital Shurki
  • Peifeng Su
  • Wei Wu
  • Fuming Ying

Program of the tutorials

Tutorial n°1 (Monday p.m) : XMVB program

  • Exercices from The Book ... >PCH< (30')
  • Work with determinant (det) and with structures with H2

- use Atomic AO's, optimized VBSCF compare to HF CASSCF energies, looks at the coefficients.

  • HF, F2 : VBSCF, different correlation wave functions (BOVB, VBCI,...), computation of weights and "charge-shift" character, also compute CASSCF wave functions.
  • Pseudo states : compute |ab|+|ba| then only one determinant. Use it to for in situ bond energy [ethylene pi bond energy |ab| vs fondament 4 determinants ]

Tutorial n°2 (Tuesday p.m): VB applications

  • Exercices from The Book ... >PCH< (30')
  • O2 paradigm : compute singlet - triplet gap
  • Benzene systeme pi dissymétrique

Tutorial n°3 (Wednesday p.m): VB vs Lewis structures BLW & HuLiS

  • Formamide VB & Lewis
  • Butadiene VB & Lewis
  • Allyl radical and cation : MO, VB & Lewis ; ground state ? Excitation energy, gap ?? (SH : je laisse; c'est corrects?)
  • Hyper conjugaison in ... ?

Tutorial n°4 (Friday p.m): State correlation diagrams

  • VB & CASSCF ....
  • Computation of H3 barrier (BOVB and VBCI)
  • Selected 1,3 dipoles (see with Philippe) : computation of 3-structure D-BOVB wave function, and of the biradical gap, correlation gap vs. barriers
  • State correlation Diagrams : SN2, H bonds