Affiliations: Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM, USA | Department of Chemistry, University of Munich, Munich, Germany
Note: [] Corresponding author: Robert T. Paine, Department of Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM 87131, USA. E-mail: [email protected]
Abstract: The reaction of Cp2ZrCl2 with LiP(H)B(Ni-Pr2)2 • DME in a 1 : 2 ratio provides the metallodiphosphane Cp2Zr[P(H)B(Ni-Pr2)2]2 (5). Combination of 5 with Mo(CO)4(norbornadiene) gives the diphosphane adduct Cp2Zr[P(H)B{}(Ni-Pr2)2] 2Mo(CO)4 (7) in which 5 acts as a bidentate chelating ligand. The reaction of 5 with n-BuLi in a 1 : 1 ratio generates a phosphane-phosphide “ate” complex Li{Cp2Zr[P(H)B(Ni-Pr2)2][PB(Ni-Pr2)2]} • DME (8). This unusual complex contains a planar, asymmetric ZrPLiP ring. The compounds have been characterized by spectroscopic methods and the molecular structures of 7 and 8 have been determined by X-ray diffraction methods.
Keywords: Aminoborylphosphanes, zirconocene, lithium phosphide, metal carbonyl
