title: On the mechanism of reduction of maleate and fumarate by Ni(I)(1,4,8,11-tetraazacyclotetradecane)+ in aqueous solutions.
abstract: Ni(I)(1,4,8,11-tetraazacyclotetradecane)(+), Ni(I)L(+), was produced in neutral aqueous solutions by radiolytic techniques. The mechanism and kinetics of the reaction of Ni(I)L(+) with maleate and fumarate were studied applying pulse-radiolysis and analysis of the final products. Surprisingly the mechanisms of reduction of maleate and fumarate differ considerably. Based on the results it was also shown that Ni(II)L(2+) is an electrocatalyst for the reduction of alkenes in aqueous solutions.
authors.affiliation: Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
authors.forename: Hava
authors.initials: H
authors.lastname: Rasnoshik
authors.forename: Alexandra
authors.initials: A
authors.lastname: Masarwa
authors.forename: Haim
authors.initials: H
authors.lastname: Cohen
authors.forename: Israel
authors.initials: I
authors.lastname: Zilbermann
authors.forename: Eric
authors.initials: E
authors.lastname: Maimon
authors.forename: Dan
authors.initials: D
authors.lastname: Meyerstein
mesh_terms: D000475:Alkenes / Q000737:chemistry; D004563:Electrochemistry; D004579:Electron Transport; D005650:Fumarates / Q000737:chemistry*; D008024:Ligands; D008298:Maleates / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D012996:Solutions; D014867:Water / Q000737:chemistry*
chemical_list: D000475:Alkenes; D005650:Fumarates; D008024:Ligands; D008298:Maleates; C547784:Ni(I)(1,4,8,11-tetraazacyclotetradecane); D009942:Organometallic Compounds; D012996:Solutions; D014867:Water