Synthesis and coordination behavior of a zirconocene bis(borylphosphane)
摘要:
The reaction of LiP(H)B((NPr2)-Pr-i)[N(SiMe3)(2)]. DME with Cp2ZrCl2, in a 2:1 ratio yields the metallodiphosphane Cp2Zr{P(H)B-(NiPr2)[N(SiMe3)(2)]}(2) (3a). Combination of 3a with Mo(CO)(4) (norbornadiene) provides the adduct Cp2Zr{P(H)B((NPr2)-Pr-i)-[N(SiMe3)(2)]}(2). Mo(CO)(4) (4a) in which the metallo-diphosphane 3a acts as a chelating ligand. The compounds have been characterized by spectroscopic methods and the molecular structures of 3a and 4a have been determined by single-crystal X-ray diffraction methods. The chemical and structural features are compared and contrasted with related metallo-diphosphanes that contain organic substituents on the diphosphane P atoms. (C) 2000 Elsevier Science B.V. All rights reserved.
Synthesis and coordination behavior of a zirconocene bis(borylphosphane)
摘要:
The reaction of LiP(H)B((NPr2)-Pr-i)[N(SiMe3)(2)]. DME with Cp2ZrCl2, in a 2:1 ratio yields the metallodiphosphane Cp2Zr{P(H)B-(NiPr2)[N(SiMe3)(2)]}(2) (3a). Combination of 3a with Mo(CO)(4) (norbornadiene) provides the adduct Cp2Zr{P(H)B((NPr2)-Pr-i)-[N(SiMe3)(2)]}(2). Mo(CO)(4) (4a) in which the metallo-diphosphane 3a acts as a chelating ligand. The compounds have been characterized by spectroscopic methods and the molecular structures of 3a and 4a have been determined by single-crystal X-ray diffraction methods. The chemical and structural features are compared and contrasted with related metallo-diphosphanes that contain organic substituents on the diphosphane P atoms. (C) 2000 Elsevier Science B.V. All rights reserved.