title: Coordination study of a new class of imine imidazol-2-imine ligands to titanium(IV) and palladium(II).
abstract: A new family of ligand precursors, N-(1-(2,6-dimethylphenylimino)ethyl)-1,3-bis(aryl)imidazol-2-imine hydrochloride, wherein aryl = 2,4,6-trimethylphenyl (3a) and 2,6-diisopropylphenyl (3b), was prepared and structurally characterised. Deprotonation of the salts yields molecules with delocalised pi-electrons, leading to zwitterionic mesomeric structures. Titanium(IV) (4a,b) and palladium(II) (5a,b) complexes were isolated and also structurally characterised. Two different coordination modes were observed where the ligand is either coordinated in a bidentate fashion as expected, or in a monodentate fashion through the more basic aryliminic nitrogen atom.
authors.affiliation: Department of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada.
authors.forename: Sarim
authors.initials: S
authors.lastname: Dastgir
authors.forename: Gino G
authors.initials: GG
authors.lastname: Lavoie
mesh_terms: D018360:Crystallography, X-Ray; D007097:Imines / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D010165:Palladium / Q000737:chemistry*; D013237:Stereoisomerism; D014025:Titanium / Q000737:chemistry*
chemical_list: D007097:Imines; D008024:Ligands; D009942:Organometallic Compounds; D010165:Palladium; D014025:Titanium