Rhodium and iridium complexes with the PN donor ligand 1-(2-pyridyl)-2-(diphenylphosphino)ethane. Crystal and molecular structures of Ir(PN)2(CO)Cl, Ir(PN)(CO)Cl, and [Rh(PN)2]PF6

Diphenylphosphino(phenyl pyridin-2-yl methylene)amine palladium(II) complexes: Chemoselective alkene hydrocarboxylation initiators

“…The 31 P{ 1 H} NMR spectrum of 3 [d: +84.5 ( 1 J RhP = 167 Hz)] reveals a doublet with a downfield coordination chemical shift (Dd) of $43 ppm compared to unbound 1. The magnitude of the 1 J RhP coupling constant is indicative of the geometry at Rh being CO cis to P as would be expected on thermodynamic grounds, and is comparable in size to that observed for similar systems [18][19][20]. The value of 1 J RhP is consistent with the P-component of 1 being a relatively poor donor (vide supra).…”

New cationic palladium (II) and rhodium (I) complexes of [Ph2PCH2C(Ph)N(2,6-Me2C6H3)]

“…The 31 P{ 1 H} NMR (CD 2 Cl 2 ) resonance in 4 (doublet at d = 61.9, 1 J RhP = 176 Hz) is shifted downfield from that of the free ligand [Ph 2 PCH 2 C(Ph)@N(2,6-Me 2 C 6 H 3 )] (L) (isomer Z, d = À19.8). A shift of this magnitude is typical for Rh(I) complexes incorporating chelating N/P ligands [74][75][76][77]. In addition, the magnitude of the Rh-P coupling constant is typical for square planar complexes with a trans N-Rh-P coordination [74].…”

Rhodium(I) carbonyl complexes of mono selenium functionalized bis(diphenylphosphino)methane and bis(diphenylphosphino)amine chelating ligands and their catalytic carbonylation activity

“…The m(CO) values of the complexes 1 and 2 are lower relative to the analogous rhodium phosphine complexes like [Rh(CO)Cl(Ph 2 PCH 2 P(O)Ph 2 )], [Rh(CO)Cl(Ph 2 PCH 2 P(S)Ph 2 )], etc. (Table 1) [14][15][16][17]28,[31][32][33][34] indicating the metal center is rich in electron density and hence expected to show high nucleophilicity. Recently, Cole-Hamilton et al [24] reported a few electron rich complexes of the type [Rh(CO)X(PEt 3 ) 2 ] (X = Cl, Br, I) having m(CO) ca.…”