title: Novel iminopyridine derivatives: ligands for preparation of Fe(ii) and Cu(ii) dinuclear complexes.
abstract: A series of imino- and amino-pyridine ligands based on dihydrobenzofurobenzofuran (BFBF) and methanodibenzodioxocine (DBDOC) backbones have been synthesized. These ligands form exclusively dinuclear complexes with metals such as iron(II) and copper(II). The structures for complexes 15, 16, 18, 19, 20, 21, 23, and 24 were determined by X-ray crystallography. The complexes show large distances for the metal nuclei and different geometries depending on the nature of the metal. An octahedral geometry was observed for the iron(II) complexes, while copper(II) complex 24 showed a distorted trigonal bipyramidal geometry. The iron(II) complexes showed activity as catalysts in the cycloaddition of CO2 to epoxides, obtaining moderate yields of cyclic carbonates.
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain. pvanleeuwen@iciq.ese and Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain. carmen.claver@urv.cat.
authors.forename: Oriol
authors.initials: O
authors.lastname: Martínez-Ferraté
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain. pvanleeuwen@iciq.ese.
authors.forename: Josep M
authors.initials: JM
authors.lastname: López-Valbuena
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain. pvanleeuwen@iciq.ese.
authors.forename: Marta Martínez
authors.initials: MM
authors.lastname: Belmonte
authors.affiliation: Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, UK. g.britovsek@imperial.ac.uk.
authors.forename: Andrew J P
authors.initials: AJ
authors.lastname: White
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain. pvanleeuwen@iciq.ese.
authors.forename: Jordi
authors.initials: J
authors.lastname: Benet-Buchholz
authors.affiliation: Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, UK. g.britovsek@imperial.ac.uk.
authors.forename: George J P
authors.initials: GJ
authors.lastname: Britovsek
authors.affiliation: Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain. carmen.claver@urv.cat and Centre Tecnòlogic de la Química, C/Marcel·li Domingo s/n, 43007 Tarragona, Spain. carmen.claver@urv.cat.
authors.forename: Carmen
authors.initials: C
authors.lastname: Claver
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, Tarragona, Spain. pvanleeuwen@iciq.ese.
authors.forename: Piet W N M
authors.initials: PW
authors.lastname: van Leeuwen