title: A new titanium building block for early-late heterometallic complexes; preparation of a new tetrameric metallomacrocycle by self assembly.
abstract: The new titanium dicarboxylate complex Cp*TiMe(OOC)2py (2) [Cp*=eta5-C5Me5; (OOC)2py = 2,6-pyridinedicarboxylate] has been synthesized. The reaction of complex 2 with water renders [Cp*Ti(OOC)2py]2O (3). The molecular structure of 3 has been studied by X-ray diffraction methods. Complex 2 reacts with isocyanides to yield the respective iminoacyl derivatives Cp*Ti(eta2-MeCNR)(OOC)2py [R=tBu (4), 2,6-dimethylphenyl (xylyl) (5)]. The molecular structure of complex4 has been established by X-ray diffraction. Compound 2 has been employed as a new building block for the preparation of new early-late heterometallic compounds; it reacts with [M(mu-OH)(COD)]2 (M = Rh, Ir) to give the corresponding tetranuclear metallomacrocycle derivatives [Cp*Ti{(OOC)(2)py}(mu-O)M(COD)]2 [M = Rh (6); Ir (7)]. The molecular structure of 6 has been established by X-ray diffraction.
authors.affiliation: Departamento de Química Inorgánica, Orgánica y Bioquímica, Universidad de Castilla-La Mancha, Facultad de Ciencias del Medio Ambiente, Avd. Carlos III, s/n, 45071, Toledo, Spain. rosa.fandos@uclm.es
authors.forename: Rosa
authors.initials: R
authors.lastname: Fandos
authors.forename: Beatriz
authors.initials: B
authors.lastname: Gallego
authors.forename: Antonio
authors.initials: A
authors.lastname: Otero
authors.forename: Ana
authors.initials: A
authors.lastname: Rodríguez
authors.forename: María José
authors.initials: MJ
authors.lastname: Ruiz
authors.forename: Pilar
authors.initials: P
authors.lastname: Terreros
authors.forename: Cesar
authors.initials: C
authors.lastname: Pastor