Phosphonium ionic liquids based on bulky phosphines: synthesis, structure and properties.
A series of new ionic liquids based on sterically hindered decyl(tri-tert-butyl)phosphonium (DTBP) or decyl(tricyclohexyl)phosphonium (DCHP) cations were prepared using quaternisation of tri-tert-butyl- or tricyclohexylphosphine with decylbromide and subsequent bromide exchange with the weakly-coordinating anions BF(4)(-), PF(6)(-), SO(3)CF(3)(-), N(SO(2)CF(3))(2)(-). The salts obtained melt below 100 degrees C and possess a broad electrochemical window. Density functional theory combined with X-ray crystallography, IR and Raman spectroscopy has been used to analyze the molecular and supramolecular structures of the compounds obtained and their possible influence on their physical properties.
Ermolaev
Vadim
V
A. E. Arbuzov Institute of Organic and Physical Chemistry of the Russian Academy of Sciences, A. E. Arbuzov str. 8, Kazan, 420088, Russia.
Miluykov
Vasiliy
V
Rizvanov
Ildar
I
Krivolapov
Dmitriy
D
Zvereva
Elena
E
Katsyuba
Sergey
S
Sinyashin
Oleg
O
Schmutzler
Reinhard
R