title: Development of realistic models for Double Metal Cyanide catalyst active sites.
abstract: Realistic molecular models of one and two-centre catalytic active sites originating from the cleavage of a precursor material known to give rise to an active double metal cyanide catalyst are described. Via periodic density functional calculations the structure of the proposed catalytic sites are shown to be dependent on electrostatic and structural relaxation processes occurring at the surfaces of the precursor material. It is shown how these effects may be adequately captured by small molecular models of the active sites. The general methodology proposed should provide a computationally efficient basis for detailed future studies into catalytic reactions over double metal cyanide materials.
authors.affiliation: Department de Química Física & Centre Especial de Recerca en Química Teòrica, Universitat de Barcelona & Parc Científic de Barcelona, C/Martí i Franquès 1, 08028, Barcelona, Spain.
authors.forename: Jacek C
authors.initials: JC
authors.lastname: Wojdeł
authors.forename: Stefan T
authors.initials: ST
authors.lastname: Bromley
authors.forename: Francesc
authors.initials: F
authors.lastname: Illas
authors.forename: Jacobus C
authors.initials: JC
authors.lastname: Jansen
mesh_terms: D001665:Binding Sites; D002384:Catalysis; D018360:Crystallography, X-Ray; D003486:Cyanides / Q000737:chemistry*; D008670:Metals / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D055672:Static Electricity
chemical_list: D003486:Cyanides; D008670:Metals