title: New [Mo(eta3-allyl)(CO)2L3]+ complexes with monodentate or tridentate nitrogen-donor ligands.
abstract: Cationic complexes [Mo(eta(3)-allyl)(CO)2L3]+ (L3 = either nitrogen-donor tridentate ligand or three monodentate ligands) were prepared in high yield and under mild conditions using as precursors either the triflato complex [Mo(eta(3)-allyl)(OTf)(CO)2(NCMe)2] or the combination of the chloro complex [Mo(eta(3)-allyl)Cl(CO)2(NCMe)2] and the salt NaBAr'(4)(Ar'= 3,5-bis(trifluoromethyl)phenyl). The tridentate ligands employed were 2,2':6',2'-terpyridine (terpy) and cis,cis-1,3,5-cyclohexanetriamine (CHTA), whereas the monodentate ligands imidazole (im) and 3,5-dimethylpyrazole (dmpz) were chosen. In order to stabilize the labile intermediates, an excess of acetonitrile was used in most of the syntheses. However, the pyrazole complex was prepared through a nitrile-free route to avoid reactions at the coordinated nitrile. The solid state structures of [Mo(eta(3)-methallyl)(CO)2(terpy)]OTf (2), [Mo(eta(3)-methallyl)(CO)2(CHTA)]BAr'4 (3), [Mo(eta(3)-methallyl)(CO)2(NCMe)3]BAr'4 (4), [Mo(eta(3)-allyl)(CO)2(im)3]OTf (5) and [Mo(eta(3)-allyl)(CO)2(dmpz)3]BAr'4 (6) were determined by means of single-crystal X-ray diffraction.
authors.affiliation: Departamento de Química Orgánica e Inorgánica-IUQOEM, Facultad de Química-CSIC, Universidad de Oviedo, 33006, Oviedo, Spain. japm@fq.uniovi.es
authors.forename: Julio
authors.initials: J
authors.lastname: Pérez
authors.forename: Dolores
authors.initials: D
authors.lastname: Morales
authors.forename: Sonia
authors.initials: S
authors.lastname: Nieto
authors.forename: Lucía
authors.initials: L
authors.lastname: Riera
authors.forename: Víctor
authors.initials: V
authors.lastname: Riera
authors.forename: Daniel
authors.initials: D
authors.lastname: Miguel
mesh_terms: D018360:Crystallography, X-Ray; D008024:Ligands; D008982:Molybdenum / Q000737:chemistry* / Q000378:metabolism; D009584:Nitrogen / Q000737:chemistry* / Q000378:metabolism; D009942:Organometallic Compounds / Q000737:chemistry*
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D008982:Molybdenum; D009584:Nitrogen