Patent ID: 6893774

Claim:
A fluoroalkylphosphate salt of formula (I) (M a+ ) b [(C n F 2n+1−m H m ) y PF 5-y (CR 1 R 2 ) x PF 5-y (C n F 2n+1−m H m ) y ] (2−) (a·b/2) (I) wherein M a+ is a monovalent, divalent or trivalent cation selected from lithium, sodium, magnesium, aluminum, nitrosyl, nitryl or organic cations; a is 1, 2 or 3; b is 2 for a=1, b is 2 for a=3, and b is 1 for a=2; and, in each case, subscripts n, m, x and y satisfy the following relationships 1≦n≦8, 0≦m≦2 for n=1 or 2, 0≦m≦4 for 3≦n≦8, 1≦x≦12, 0≦y≦2, where R 1 and R 2 are each independently, fluorine, hydrogen, alkyl having 1 to 8 carbon atoms, fluoroalkyl having 1 to 8 carbon atoms or perfluoroalkyl having 1 to 8 carbon atoms; and wherein the substituents (C n F 2n+1−m H m ) are in each case identical or different.