TY - JOUR
T1 - N-methyl-N-alkylpyrrolidinium bis(perfluoroethylsulfonyl)amide ([NPf 2]-) and tris(trifluoromethanesulfonyl)methide ([CTf 3]-) salts: Synthesis and characterization
AU - Johansson, Katarina Maria
AU - Adebahr, Josephina
AU - Howlett, Patrick Craig
AU - Forsyth, Maria
AU - Macfarlane, Douglas Robert
PY - 2007
Y1 - 2007
N2 - Novel salts based the pyrrolidinium cation [C(n)mpyr](+) (where n denote the number of carbons in the straight alkyl chain) and either the [NPf(2)](-) or [CTf3](-) anions have been synthesized and characterized to determine their thermal behaviour, stability, and conductivity. [C(1)mpyr][NPf(2)], [C(2)mpyr][NPf(2)], and [C(1)mpyr][CTf3] exhibit behaviour indicative of a plastic crystal phase. Both [C(3)mpyr][NPf(2)] and [C(4)mpyr][NPf(2)] are RTILs, while all of the [CTf3](-) salts, have melting points above 60 degrees C. [C(3)mpyr][NPf(2)] exhibited the widest electrochemical window of 5.5V. The [NPf(2)](-) salt exhibited similar reductive limits to the [NTf2](-) anion, -3.2V versus Fc(+) Fc, while [CTf3](-) had lower reductive stability. The [CTf3](-) salts were more stable towards oxidation, +2.5V versus Fc(+) Fc, compared to the [NPf(2)](-) and [NTf2](-) salts.
AB - Novel salts based the pyrrolidinium cation [C(n)mpyr](+) (where n denote the number of carbons in the straight alkyl chain) and either the [NPf(2)](-) or [CTf3](-) anions have been synthesized and characterized to determine their thermal behaviour, stability, and conductivity. [C(1)mpyr][NPf(2)], [C(2)mpyr][NPf(2)], and [C(1)mpyr][CTf3] exhibit behaviour indicative of a plastic crystal phase. Both [C(3)mpyr][NPf(2)] and [C(4)mpyr][NPf(2)] are RTILs, while all of the [CTf3](-) salts, have melting points above 60 degrees C. [C(3)mpyr][NPf(2)] exhibited the widest electrochemical window of 5.5V. The [NPf(2)](-) salt exhibited similar reductive limits to the [NTf2](-) anion, -3.2V versus Fc(+) Fc, while [CTf3](-) had lower reductive stability. The [CTf3](-) salts were more stable towards oxidation, +2.5V versus Fc(+) Fc, compared to the [NPf(2)](-) and [NTf2](-) salts.
UR - http://<Go to ISI>://000243788800012
M3 - Article
VL - 60
SP - 57
EP - 63
JO - Australian Journal of Chemistry
JF - Australian Journal of Chemistry
SN - 0004-9425
IS - 1
ER -