67773-08-4Relevant academic research and scientific papers
Triphenyl-phosphine and -arsine analogues which facilitate the electrospray mass spectrometric analysis of neutral metal complexes
Decker, Corry,Henderson, William,Nicholson, Brian K.
, p. 3507 - 3513 (2007/10/03)
The six triarylphosphines PPhn(C6H4OMe-p)3-n and PPhn(C6H4NMe2-p)3-n (n = 0-3) and the arsine As(C6H4OMe-p)3 (L) have been synthesized and examined for their use in the electrospray mass spectrometric (ESMS) study of metal complexes. This has been tested with selected examples of the complexes [Mo(CO)4L2], [Fe(CO)3L2], [Fe(CO)4L], [Ru3(CO)9L3], cis-[PtCl2L2], [PdCl2L2] and [AuCl(L)]. All of the metal carbonyl complexes of these ligands gave [M + H]+ ions in their spectra, while in contrast the analogous PPh3 complexes do not, suggesting that these electrospray-friendly ligands should be useful for the characterisation of a wide range of complexes by ESMS. The incorporation of the ligands into metal halide complexes however does not allow the observation of [M + H]+ ions, with ions formed by the previously reported halide-loss mechanism being the only ones observed. The Royal Society of Chemistry 1999.
Probing the bonding of phosphines and phosphites to platinum by NMR. Correlations of 1J(PtP) and Hammett substituent constants for phosphites and phosphines coordinated to platinum(II) and platinum(0)
Cobley, Christopher J.,Pringle, Paul G.
, p. 107 - 115 (2008/10/08)
The values of 1J(PtP) have been measured for the platinum(II) complexes cis-[PtCl2L2] and cis-[PtMeClL2] and the platinum(0) complexes [PtL(norbornene)2] and [PtL2(norbornene)] where L = P(C6H4Z-4)3 and [PtL2(norbornene)], [PtL3] and [PtL4] where L = P(OC6H4Z-4)3 and Z = NMe2, OMe, Me, H, Cl, CF3. When 1J(PtP) is plotted against the Hammett substituent constant two distinct trends emerge: for platinum(II) the more electron-withdrawing the substituent the smaller the 1J(PtP), while for platinum(0) the more electron-withdrawing the substituent the larger the 1J(PtP). These observations are rationalised in terms of the σ and π-bonding components of the platinum-phosphorus bonds.
Syntheses and Spectroscopic Investigations of Substituted cis- and trans-Dichlorobis(triphenylphospane)platinum(II) Compounds
Brune, Hans Albert,Falck, Manfred,Hemmer, Reinhard,Schmidtberg, Guenter,Alt, Helmut G.
, p. 2791 - 2802 (2007/10/02)
Compounds of the type cis- and trans-dichlorobis(triphenylphosphane)platinum(II) (3) with substituents of different electronic character in the phenyl rings bonded to phosphorus have been synthesized.The coupling constants 1J and the chloro-platinum valence vibrational frequencies are demonstrated to be criteria for unambiguous discrimination between cis- and trans-configurations at platinum; a linear correlation exists between the sum of the ?-constants of the sustituents at the triphenylphosphane and the coupling constants 1J.
