Author/Authors :
Michael D. Sliger، نويسنده , , Steven J. P’Pool، نويسنده , , Rachel K. Traylor، نويسنده , , James McNeill III، نويسنده , , Sidney H. Young، نويسنده , , Norris W. Hoffman، نويسنده , , Marc A. Klingshirn، نويسنده , , Robin D. Rogers، نويسنده , , Kevin H. Shaughnessy، نويسنده ,
Abstract :
Ionic liquid solvents N-hexylpyridinium bistrifylimide ([C6pyr][Tf2N]] and 1-butyl-3-methylimidazolium hexafluorophosphate ([C4mim][PF6]) promoted the displacement of anionic ligands by pyridine derivatives in trans-(Ph3P)2Rh(CO)NO3 to a much greater extent than did dichloromethane. Thus, addition of a slight excess of 2-fluoropyridine to trans-(Ph3P)2Rh(CO)NO3 in [C4mim][PF6] gave a 29:71 product mixture of trans-(Ph3P)2Rh(CO)NO3:[trans-(Ph3P)2Rh(CO)(2-fluoropyridine)][NO3], while the ratio was 91:9 in dichloromethane.
Keywords :
Ionic liquids , Ligand substitution , Rhodium , Solvent properties
