名称:
(NH)-Phosphanylamido- and (PH)-Phosphoraneiminato Transition-Metal Complexes: Syntheses, Structures, and Computational Studies
摘要:
Reactions of aminobis(diorganylamino)phosphanes (R2N)(2)PNH2 (R = iPr (a), Cy (b)) with Cp2MCl2 (M = Ti, Zr, Hf), CpTiCl3, and TiCl4 lead to the formation of the transition-metal complexes (R2N)(2)PN(H)MCp2Cp2Cl (M=Ti (1b), Zr (2a,b) Hf (3a,b)) (R2N)(2)P(H)NTiCpCl2 (8a,b), and (R2N)(2)P(H)NTiCl3 (10a,b), respectively. The influence of electronic effects of the metal fragment on the resulting equilibrium between the (NH)-phosphanylamido and the tautomeric (PH-iminophosphorane form is presented in detail.; Computational studies unambiguously confirm the experimental results. The molecular structures of 2a, 3a, and 8b have been determined by single-crystal S-ray diffraction.