title: Sequential transition States and the valley-ridge inflection point in the formation of a semibullvalene.
abstract: [structure: see text] Two sequential transition states are calculated at the B3LYP/6-31G(d,p) level for the deazetization of 3b. The intrinsic reaction coordinate for loss of nitrogen passes through a transition state and then a valley-ridge inflection point and ultimately leads to the transition state for the Cope rearrangement of semibullvalene 4b. The energetic and geometrical consequences are discussed.
authors.affiliation: Department of Chemistry and Biochemistry, Texas Tech University, Lubbock 79409-1061, USA.
authors.forename: Chun
authors.initials: C
authors.lastname: Zhou
authors.forename: David M
authors.initials: DM
authors.lastname: Birney