22377-49-7Relevant academic research and scientific papers
Effect of fluorine and trifluoromethyl substitution on the donor properties and stereodynamical behaviour of triarylphosphines
Howell, James A. S.,Fey, Natalie,Lovatt, Jonathan D.,Yates, Paul C.,McArdle, Patrick,Cunningham, Desmond,Sadeh, Einat,Gottlieb, Hugo E.,Goldschmidt, Zeev,Hursthouse, Michael B.,Light, Mark E.
, p. 3015 - 3028 (2007/10/03)
A series of 2-, 3- or 4-trifluoromethyl substituted triarylphosphines and their oxide, chalcogenide and Fe(CO)4 derivatives have been prepared and characterised spectroscopically and crystallographically. Electronic effects of CF3 su
Infrared, (57)Fe Moessbauer, and (31)P NMR Spectroscopic Characterization of Fe(CO)4L (L = Phosphine and Phosphite)
Inoue, Hidenary,Nakagome, Takashi,Kuroiwa, Takeshi,Shirai, Tsuneo,Fluck, Ekkehard
, p. 573 - 578 (2007/10/02)
A series of trigonal bipyramidal Fe(CO)4L complexes has been prepared and characterized by infrared, (57)Fe Moessbauer and (31)P NMR spectroscopy.A linear correlation, with a negative slope, between the CO stretching frequencies and the isomer shifts demonstrates that the triple bond nature of the carbonyl ligands is strengthened with increasing iron-to-phosphorus back donation.The linear dependence of the quadrupole splittings on the isomer shifts with a positive slope has revealed that the ?-donor capability of the phosphine or phosphite ligand is offset by the ?-acceptor capability.The formation of Fe(CO)4L complexes from the corresponding free ligands is accompanied by a downfield shift of (31)P NMR chemical shifts.The coordination shifts are linearly correlated with the Moessbauer isomer shifts. - Phosphinetetracarbonyliron, Phosphitetetracarbonyliron, IR Spectra, (31)P NMR Spectra, (57)Fe Moessbauer Spectra
