title: Polarizability effects and dispersion interactions in alkene-Br2 pi-complexes.
abstract: Weakly bound molecular complexes play an important role in chemistry, physics, and biodisciplines. The preequilibrium pi-complexes of various alkenes with bromine have been examined quantitatively, and a direct relationship between association constants (KF) of these pi-complexes and polarizability of the olefins was found. The stability of the Br2-olefin pi complexes is affected by both the donor ionization potential and the polarizability of the olefin, and an equation able to take into account both effects is proposed.
authors.affiliation: Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, I-56126 Pisa, Italy. cinziac@farm.unipi.it
authors.forename: Cinzia
authors.initials: C
authors.lastname: Chiappe
authors.forename: Heiner
authors.initials: H
authors.lastname: Detert
authors.forename: Dieter
authors.initials: D
authors.lastname: Lenoir
authors.forename: Christian Silvio
authors.initials: CS
authors.lastname: Pomelli
authors.forename: Marie Françoise
authors.initials: MF
authors.lastname: Ruasse