147999-75-5Relevant 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.
Substituent Effects in Synthesis and Properties of Hexakismethanium(2+) Bis(tetrafluoroborates)
Schmidbaur, Hubert,Brachthaeuser, Benno,Gamper, Siegfried,Schier, Anette,Steigelmann, Oliver
, p. 1725 - 1735 (2007/10/02)
Polyaurated carbon complexes of the type (2+) with functionalized phosphine ligands have been prepared by the reaction of the phosphinegold(I) chlorides R(Ph)2PAuCl (R = p-C6H4-Cl 2a, p-C6H4-Br 2b, p-C6H4-CH3 2c, p-C6H4-OCH3 2d, p-C6H4-COOH 2e, p-C6H4-N(CH3)2 2f), R2(Ph)PAuCl (R = p-C6H4-N(CH3)2 2g) and R3PAuCl (R = p-C6H4-N(CH3)2 2h) with tetrakis(dimethoxyboryl)methane in HMPT at room temperature.Clearly depending on the different inductive and mesomeric effects, the preparation of the clusters with substituents like -CH3 3c, -OCH3 3d and -N(CH3)2 3f needs shorter reaction times and the products show better solubility in organic solvents than those with functional groups like -Cl 3a, -Br 3b and -COOH 3e.The 31P magnetic resonance parameters are correlated with electronic effects of the substituents, but the chemical shift of the interstitial carbon atom in the 13C-NMR spectra is largely independent of the coordinating ligands.For the phosphinegold(I) chlorides 2f-h X-ray structure analyses have been performed. Key words: Auriophilicity, Methanium(2+), Hexaaurio(I) Compounds, Phosphane-Gold(I) Halides
