title: A chloro-bridged dimanganese complex and an oxo-bridged dititanium complex of a ditopic bis(pyrazol-1-yl)borate ligand.
abstract: The synthesis and crystal structure analysis of the ditopic p-phenylene-bridged bis(pyrazol-1-yl)borate [[p-C6H4(Bpz2tBu)2]Li2] (LLi2; pz=pyrazol-1-yl) is described. A salt metathesis reaction between LLi2 and MnCl2 in THF leads to the dinuclear complex [L[Mn(THF)]2(mu-Cl)2] featuring a central diamond MnII-(mu-Cl)2-MnII core (X-ray crystal structure analysis). Treatment of LLi2 with 2 equiv of [Ti(NMe2)3Cl] gives the dinuclear titanium compound [L[Ti(NMe2)3]2]. Upon reaction of LLi2 with [Ti(NMe2)2Cl2] and water, the mu-oxo-bridged dititanium species [L[Ti(NMe2)Cl]2(mu-O)] is obtained in excellent yield (X-ray crystal structure analysis).
authors.affiliation: Institut für Anorganische Chemie, J. W. Goethe-Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt (Main), Germany.
authors.forename: Susanne
authors.initials: S
authors.lastname: Bieller
authors.forename: Michael
authors.initials: M
authors.lastname: Bolte
authors.forename: Hans-Wolfram
authors.initials: HW
authors.lastname: Lerner
authors.forename: Matthias
authors.initials: M
authors.lastname: Wagner
mesh_terms: D001896:Boron Compounds / Q000737:chemistry*; D018360:Crystallography, X-Ray; D008024:Ligands; D008345:Manganese / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D011720:Pyrazoles / Q000737:chemistry*; D013237:Stereoisomerism; D014025:Titanium / Q000737:chemistry*
chemical_list: D001896:Boron Compounds; D008024:Ligands; D009942:Organometallic Compounds; D011720:Pyrazoles; D008345:Manganese; D014025:Titanium