ISSN:
0020-7608
Keywords:
metathesis reactions
;
bond order
;
free valence
;
minimum energy path
;
nonsynchronization
;
Computational Chemistry and Molecular Modeling
;
Atomic, Molecular and Optical Physics
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A few simple atom-transfer reactions (i.e., Ȧ+X-A→A-X+Ȧ) are studied by quantum mechanical ab initio methods. Emphasis is given to the detailed analysis of density matrices rather than to the energetics. Results reveal that during these reactions a small free valence always develops on the migrating atom at the transition state. The barriers in these reactions arise from the greater extent of bond cleavage in the reactant than that of bond formation in the transition state. Analysis of bond orders estimated from bond lengths using Pauling's relation also leads to the fact that the bond-cleavage process is more advanced than is the bond-formation process in these reactions. © 1997 John Wiley & Sons, Inc. Int J Quant Chem 63: 1099-1106, 1997
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
