Missing link: PCP pincer ligands containing P–N bonds and their Pd complexes
摘要:
New PCP ligands in which the phosphine donor arms are connected to the central aromatic ring via NH moieties and their (PCP)PdCl complexes have been prepared. One such (PCP)PdCl complex was characterized by X-ray diffractometry in the solid state. The (PCP)PdCl complexes are exceptionally robust towards oxygen and water despite the presence of P-N bonds. (c) 2006 Elsevier B.V. All rights reserved.
reagent Fe(CO)5 has been developed for the straightforward synthesis of well defined cyclometalled PCP iron carbonyl pincer complexes. The reaction proceeds cleanly under mild conditions at 30 °C and UV irradiation. Four hydride pincer complexes are synthesized and fully characterized as well as an intermediate dinuclear species. The new iron complexes are active and selective catalytic precursors for the
the nitrogen source under mild conditions has attracted much attention. Herein, the conversion of N2 into iminophosphorane was reported. By visible light irradiation, N2 was split on a MoII complex bearing a PNCNP ligand, directly forming the MoV nitride. After the N–P bond formation on the terminal nitride, the N atom from N2 was ultimately transferred into iminophosphorane. Key intermediates were
以N 2为氮源,在温和条件下合成含氮有机膦化合物备受关注。在此,报道了N 2向亚氨基正膦的转化。通过可见光照射,N 2在带有 PNCNP 配体的 Mo II配合物上分裂,直接形成 Mo V氮化物。在末端氮化物上形成 N-P 键后,来自 N 2的 N 原子最终转移到亚氨基正膦中。对关键中间体进行了表征。