200887-53-2Relevant academic research and scientific papers
Syntheses of the complete set of isomerically pure, partially fluorinated cyclopentadienyl ligands (C5F5-nHn) [n = 1-4] by flash vacuum thermolysis of (η5-Oxocyclohexadienyl)ruthenium complexes. Molecular structures of [Ru(η5-C5Me5) (η5-C5-1,2-F2H3)]
Hughes, Russell P.,Zheng, Xiaoming,Morse, Christopher A.,Curnow, Owen J.,Lomprey, Jeffrey R.,Rheingold, Arnold L.,Yap, Glenn P. A.
, p. 457 - 465 (2008/10/08)
A series of partially fluorinated (pentamethylcyclopentadienyl)(η5-oxocyclohexadienyl)-ruthenium complexes [RuCp*(2-6-η5-C5F5-nHnCO)] (n = 1-4; Cp* = C5Me5) has been prepared by treatment of the cation [RuCp*(MeCN)3]+ with thallium(I) salts of the corresponding phenols. Depending upon the number and location of the fluorine substituents, the complexes hydrogen bond to one-half of a molecule, one molecule, or no molecules of water. Subjection of these compounds to flash vacuum thermolysis (FVT) results in extrusion of CO and selective formation of the corresponding complexes [RuCp*(η5-C5F5-nHn)] containing the monofluorocyclopentadienyl, 1,2-difluorocyclopentadienyl, 1,3-difluorocyclopentadienyl, 1,2,3-trifluorocyclopentadienyl, 1,2,4-trifluorocyclopentadienyl, and tetrafluorocyclopentadienyl ligands. 1H, 19F, and 13C NMR spectra are reported for the new cyclopentadienyl ligands, and the 13C-19F coupling constants thus obtained are used to generate a full simulation of the 13C NMR spectrum of the pentafluorocyclopentadienyl ligand in [Ru(C5Me5)(C5F5)]. The solid-state structures of two complexes containing partially fluorinated cyclopentadienyl complexes have been determined by X-ray crystallography: [RuCp*(η5-C5-1,2-F2H3)] (15), and [RuCp*(η5-C5FH4)] (17).
