New coordination modes at molybdenum for 2-diphenylphosphinoaniline derived ligands

摘要

The complexes [MoCl_3(1-N,2-Ph_2P-C_6H_4] (1) and {MoCl(Nt-Bu)[1-μ(N),2-(Ph_2P)C_6H_4]}_2 (2) have been obtained from the reaction of 2-diphenylphosphinoaniline [1,2-(NH_2)(Ph_2P)C_6H_4] with either sodium molybdate [Na_2MoO_4] (in the presence of Et_3N and Me_3SiCl) or [MoCl_2(Nt-Bu)_2(DME)]; the crystal structure of 1 reveals a novel MoNC_2PN six-membered conjugated ring system derived from a P-N coupling reaction between two ligands, whilst that of 2 reveals bridging imido/terminal phosphine ligation.