The effect of trifluoromethyl groups in the para positions of a perfluoroaryl phosphine: A comparison of the structures of [{η5,κP-C5Me4CH2C6F3X-5-P(C6F4X-4)-2-CH2P(C6F4X-4)2}RhCl2], X=F and CF3

Tethering of Pentamethylcyclopentadienyl and N-Heterocycle Stabilized Carbene Ligands by Intramolecular 1,4-Addition to a Polyfluorophenyl Substituent

“…In particular in the 1 H NMR spectrum there are four cyclopentadienyl methyl resonances at δ 0.74, 1.39, 1.80, and 1.86 and two mutually coupled doublet resonances possessing further coupling at δ 1.38 and 1.76. These data are consistent with those of the tethered ligand of [(η 5 ,κ P -C 5 Me 4 CH 2 C 6 F 4 PPh 2 )­RhCl­(CNPh)]­BF 4 and related complexes . Further, the 19 F NMR spectrum displays five distinct fluorine resonances of equal integration at δ −145.60, −149.36, −174.06, −176.81, and −185.71, which are consistent with the resonances of other polyfluorocyclohexa-1,4-dienes …”

“…We have previously identified intramolecular dehydrofluorinative carbon–carbon coupling as a rapid, high-yielding route to η 5 ,κ P -cyclopentadienyl-phosphine complexes of rhodium and , iridium . The cationic complexes [Cp*MClL­(κ P -PR 2 C 6 F 5 )] + and [Cp*MCl­{κ 2 P , L -(C 6 F 5 )­PR-L}] + yielded [(η 5 ,κ P -C 5 Me 4 CH 2 C 6 F 4 PR 2 )­MLCl] + and [(η 5 ,κ 2 P , L -C 5 Me 4 CH 2 C 6 F 4 PR-L)­MCl] + (L = Lewis basic ligand or moiety), respectively, on treatment with Proton Sponge.…”

Modulating the Steric, Electronic, and Catalytic Properties of Cp* Ruthenium Half-Sandwich Complexes with β-Diketiminato Ligands

“…Both sets of Ru II and Ru III complexes, incorporating β-diketiminate CF 3 groups, demonstrate crystal packing effects more complicated than those observed in the other complexes. In all cases involving CF 3 groups, the spatial packing involving complexes 9−11 and 15−17 maximizes the number of intermolecular fluorine−fluorine interactions, as observed in other organometallic complexes bearing fluorinated ligands 37 and organic molecules. 38 A more detailed discussion regarding intermolecular interactions is provided in the Supporting Information.…”