title: Functionalized imido-bridged Ti(IV) complexes as new building blocks for supramolecular arrangements: generation of a 1D structure through a Mg-Cl···I-C halogen bonding interaction.
abstract: The new functionalized aryl-imido-bridged cyclopentadienyl titanium compounds [TiCl(η(5)-C5Me5){μ-NR}]2, R = 4-X-C6H4 (X = CN (2a), X = Cl (2b), X = I (2c), X = (OMe) (2d)); 3,5-(OMe)2C6H3 (2e) were prepared and their appropriateness as building blocks for constructing supramolecular structures was evaluated. The presence of a functional group in the para position within the aryl-imido ligand leads to the formation of 1D arrangement for 2a, 2c and 2d through halogen bonding or hydrogen bonding interactions. In particular, the imido titanium complex 2c forms a supramolecular chain with a [MgCl2·(THF)4] unit generated in the synthesis where the metallic fragments are connected by C-I···Cl-Mg halogen bonding interactions (XB), being the first example within group 2 metals where the XB motif M-Cl···I-C appears.
authors.affiliation: Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain.
authors.forename: Fernando
authors.initials: F
authors.lastname: Vidal
authors.forename: Ma Angeles
authors.initials: MA
authors.lastname: Dávila
authors.forename: Ainhoa
authors.initials: A
authors.lastname: San Torcuato
authors.forename: Pilar
authors.initials: P
authors.lastname: Gómez-Sal
authors.forename: Marta E G
authors.initials: ME
authors.lastname: Mosquera