Arylene fluorinated sulfonimide compositions
Described herein are aromatic sulfonimide compositions that can be used to prepare polymers useful as membranes in electrochemical cells.
1. A composition of Formula (I)
wherein Ar is a univalent group of Formula (II) or (III):
R f is a straight chain, branched or cyclic, perfluorinated alkylene group having from 1 to 20 carbon atoms and optionally substituted with one or more ether oxygens or halogens;
m is 1-6;
M is one or more of monovalent cation;
Q is S, SO 2 , CO, or CR 1 R 2 , wherein R 1 and R 2 are independently branched or cyclic perfluorinated alkyl groups having 1 to 10 carbon atoms, and wherein R 1 and R 2 can together form a ring; and
X is chlorine, bromine, iodine, methanesulfonate, or trifluoromethanesulfonate.
2. The composition of claim 1 wherein M is K, Na, Li, or H.
3. The composition of claim 1 wherein R f is a perfluorinated alkylene group having from 2 to 10 carbon atoms.
4. The composition of claim 3 wherein R f is a linear, perfluorinated alkylene group having from 2 to 4 carbon atoms.
5. The composition of claim 1 wherein Ar is a univalent group of Formula (IV) or (V):
6. The composition of claim 1 wherein m is 1.
7. The composition of claim 1 wherein Q is SO 2 .
8. The composition of claim 1 wherein X is Br.