Molecular structures of ruthenium half-sandwich complexes with primary and secondary phosphines: [(η6-p-cymene)RuCl2(PR3)] [p-cymene=1-Me-4-PriC6H4; PR3=PH2Fc, PH2CH2Fc, PH(CH2Fc)2; Fc=Fe(η5-C5H4)(η5-C5H5)]

Spectroscopic Characterization of Primary and Secondary Phosphine Ligation on Ruthenium(II) Complexes

“…120°are also typical. 39,[43][44][45][46] Complexes 2b,c and 3a-c displayed singlet 31 P{ 1 H} NMR spectra arising from the chemically equivalent ligated phosphines, as well as a septuplet peak arising from the (PF 6 ) -counterion for 2b,c. 1 H NMR spectra were also consistent with the assigned complex structure (vide supra).…”

“…28 Analogous primary and secondary phosphine complexes alternatively afford a rich array of IR and NMR spectroscopic information directly responsive to the effects of phosphine coordination to a Lewis acidic metal center; the ν(P-H) modes lie in the open 2200-2400 cm -1 region of IR spectra, and 1 H-31 P spin coupling reveals a wealth of information in NMR spectra. [29][30][31][32][33][34][35][36][37][38][39] One can note that primary and secondary phosphine centers retain the possibilities of chelation and chiral modification while offering distinct steric and electronic properties as ligands.…”

“…Monophosphine complexes [(p-cymene)-RuCl 2 L] (L ) PH 2 Fc, PH 2 CH 2 Fc, and PH(CH 2 Fc) 2 , 1a-c, respectively) were reported previously. 39 Complete IR and NMR spectroscopic analyses have been carried out, which suggest trends in relevant parameters that characterize the coordinate bonding in these complexes.…”

New ferrocenylmethylphosphines – Preparation, characterisation and coordination chemistry of PH(CH2Fc)2, P(CH2Fc)3 [Fc=Fe(η5-C5H5)(η5-C5H4)] and their derivatives

“…TMS, 13 C NMR (100.6 MHz): TMS, 31 P NMR (162 MHz): external 85% H 3 PO 4 . The IR spectra were recorded as KBr mulls on a Perkin-Elmer System 2000 FT-IR spectrometer in the range 350-4000 cm À1 .…”

“…We have already shown that the phosphines PH 2 Fc, PH 2 CH 2 Fc, and PH(CH 2 Fc) 2 (=L) react with transition metal complexes with reactive M-X bonds (X = halide) without loss of HX but with clean formation of the corresponding phosphine complexes, such as [Cp R TaCl 4 (L)] (Cp R = C 5 H 4 Me, C 5 Me 5 ) [12], [(p-cymene)RuCl 2 (L)] [3,13], [(p-cymene)Ru(Cl)(L) 2 ](PF 6 ) [14], trans-[Ru(Cl) 2 (L) 4 ] [14], [MI 2 (CO) 3 (L) 2 ] and [MI 2 (CO) 2 (L) 3 ] (M = Mo, W) [15][16][17]. The unexpected formation of the unique complex salt [WI(CO) 2 (PH 2 CH 2 Fc) 4 ]I is another example of the unusual coordinating properties of these phosphines [18].…”