6533b7d1fe1ef96bd125d641
RESEARCH PRODUCT
ChemInform Abstract: LOCATION OF TRANSITION STATES AND STABLE INTERMEDIATES BY MINIMAX/MINIMI OPTIMIZATION OF SYNCHRONOUS TRANSIT PATHWAYS
Axel Jensensubject
Maxima and minimaWork (thermodynamics)Quadratic equationChemistryNorm (mathematics)Path (graph theory)Applied mathematicsGeneral MedicineMinimaxMaximaTransition statedescription
The MINIMAX/MINIMI concept for the location of transition states and/or stable intermediates of chemical reactions is introduced, based on the synchronous transit method. According to this strategy, minimization of quadratic synchronous transit path maxima or minima is achieved by constrained exhaustive optimization of internal coordinates. The method and its efficiency are demonstrated for two-dimensional model surfaces as well as for thermally allowed electrocyclic interconversions of cyclopropyl-/allyl-cation and cyclobutene-/butadiene (gauche) within the framework of MNDO-SCF calculations. Thus, in both cases a direct comparison with the exact solution determined by minimization of the scalar gradient norm and cross reference to the original work of Halgren and Lipscomb [3] is possible.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1983-11-01 | Chemischer Informationsdienst |