Laser desorption from ZnO and AgO produces small bare metal cluster ions.Laser desorption from a ZnO/AgO mixture produces an enhancement of the silver cluster ion signal with complete suppression of the zinc signal.The chemistry of Zn2+ indicates IP(Zn2) = 9.0 +/- 0.2 eV and D0(Zn+ - Zn) = 0.56 +/- 0.2 eV.The reactivity of Zn2+ with alkenes and alcohols is characterized by displacement of a zinc atom and formation of Zn+ - B (B = alcohol, alkene).The silver cluster ions are produced with excess kinetic energy; however, collisional cooling is achieved by trapping the cluster ions in a static pressure of argon.Charge transfer reactions indicate IP ( Agn ) nL2+ (n = 3,5; L = sec-butylamine) reacts with sec-butylamine via deamination and dehydrogenation indicating D0g (AgnL2+ - butadiene) > 1.73 eV.
Buckner, Steven W.,Gord, James R.,Freiser, Ben S.
p. 3678 - 3681
(2007/10/02)
THE FORMATION OF CATION-RADICALS BY THE ACTION OF CHLORINE DIOXIDE ON p-SUBSTITUTED STYRENES AND OTHER ALKENES
The Hammet plot for the reaction of ClO2 with p-substituted styrenes, the solvent effect, and the order of reacivity of several alkenes towards ClO2, indicate that the alkene-ClO2 reaction proceeds via the formation of cation-radicals.