SYNTHESIS, STRUCTURE AND REACTIVITY OF BIS(N-ARYL-IMINOPHOSPHORANYL)METHANES. X-RAY CRYSTAL STRUCTURES OF (4-CH₃-C₆H₄-N˭PPh₂)₂CH₂ AND (4-NO₂-C₆H₄-N˭PPh₂)₂CH₂

Preparation and properties of rhodium(I) and iridium(I) diolefin complexes of heterodifunctional phosphorus–imine chelating ligands and a related iminophosphine. 103Rh NMR parameters of the rhodium complexes obtained via indirect two-dimensional 31P, 103Rh{1H} NMR spectroscopy

“…There are, however, only a few examples of rhodium complexes containing chelating ligands with both a phosphine and an imine donor site (36)(37)(38)(39). There are no examples of cationic rhodium(1) or iridium(1) complexes of phosphoranimine-phosphine heterodifunctional ligands such as those described herein, although the work of Irnhoff et al (40)(41)(42)(43) provides several examples of cationic complexes containing doubly oxidized iminophosphorane ligands acting as bidentate ligands to Ir and Rh through the nitrogen atoms or through one nitrogen and one carbon atom.…”

A Bimetallic, Coordinated‐Ketene Complex Formed from a Bimetallic Lithium–Carbon Spirocycle by Lithium‐Mediated Insertion of CO into a Rhodium–Carbon Bond

“…The LiC(1) bond length (2.20(1) Å) in 1 , in which the Li atom is tricoordinate, is substantially shorter than those with tetracoordinate Li atoms (2.29–2.39 Å) 25a. e The PC(1) bond lengths (1.695(6), 1.706(6) Å) lie between typical PC single‐bond (1.80 Å) and PC double‐bond (1.57 Å) lengths 26. The PN bond lengths (1.611(4), 1.579(5) Å) are closer to typical PN double‐bond (1.57 Å) than to PN single‐bond (1.77 Å) values.…”

A new and convenient approach towards bis(iminophosphoranyl)methane ligands and their dicationic, cationic, anionic and dianionic derivatives

“…Bis(iminophosphorane)methane ligands are most interesting species because of their potential chelating behavior. [11][12][13][14] Furthermore, the presence of two acidic protons at the methylene bridge offers the possibility to generate anionic derivatives which are structurally related to acetylacetonates and b-diketiminates, and even geminal dianions via double deprotonation. [15][16][17] This was nicely illustrated by Cavell and coworkers who have studied the coordination chemistry of such a dianionic derivative (N-TMS) with lanthanides and transition metals.…”