91383-84-5Relevant 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.
Molibdenum-95 nuclear magnetic resonance studies on disubstituted molibdenum(0) carbonyls
Alyea, Elmer C.,Somogyvari, Arpad
, p. 397 - 400 (2007/10/02)
Molibdenum-95 nmr spectral data are reported for 40 cis- and trans-Mo(CO)4LL' compounds and the chemical shifts discussed in relation to a simplified Ramsey expression for the paramagnetic shielding term.The identification of mixtures of products of the type Mo(CO)6-nLn is shown to be easily accomplished by 95Mo nmr spectroscopy.The 95Mo chemical shifts provide a sensitive probe of structural and electronic effects, as illustrated for several cyclic nitrogen ligands as well as a range of phosphine ligands in the Mo(CO)4LL' complexes.
