TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): reaction of a sulfonyl compound (II) of formula (S(O)2(R1)2) with a amine compound (III) of formula (N-(R6)2)(Q+) to give (I) (where R1 is F or Cl); reaction of a sulfonyl chloride with (III) to give (I) (where R1 is Cl), and reaction of (I) (where R1 is Cl) with a metal fluoride compound (IV) of formula (MF) to give (I) (where R1 is F); reaction of a imidosulfuryl compound (V) of formula (N-(S(O)2-R11)2) (M+) and a metal containing compound (VI) of formula (Q+-X-) to give (I); or reaction of a sulfonyl compound (IIa) of formula (S(O)2(R9)2) with a amine compound (IIIa) of formula (N-(R6)2)(T+) to give a imidosulfuryl compound (VII) of formula (N-(S(O)2-R9)2) (T+), and reaction of (VII) with a fluoro compound (VIII) of formula (Q-R8) to give (I) (where R1 is F).R6 = H, Li, Na, K, Cs or (R7)3Si- (preferred);R7 = 1-12C alkyl, preferably CH3;M = Li, Na, K or Cs;M+ = Li+, Na+, K+ (preferred) or Cs+;X- = Cr-, Br- (both preferred), F-, I-, CH3COO-, PhCH2COO- CN-, CF3COO-, SO42-, CF3SO3-, BF4-, PF6-, NO3-, ClO4-, SbF6- or RuO4-;R11 = R1, preferably Cl or F;R9 = Cl, Br or I; andT+ = Li+, Na+, K+, Cs+ or H+.Preferred Process: The process of using (I) further comprises using the electrolyte in a lithium-ion battery. (II) and (III) are reacted together at -78 to 110 degrees C, 15-25 degrees C. The reaction of sulfonyl chloride with (III), and reaction of (IIa) with (IIIa) are carried out at -78 to 110 degrees C, preferably -5 to 25 degrees C. The reaction of (I) (where R1 is Cl) with (IV), and reaction of (VII) with (VIII) are carried out in the presence of an aprotic solvent. The reaction of (V) and (VI) is carried out in water so that the so-obtained product (I) precipitates and the so-formed by metal containing product of formula (M+X-) is at least substantially soluble. Preferred Components: The aprotic solvent is a polar solvent, preferably acetonitrile. (I) has a conductivity of at least 0.0001 mS cm-1, preferably at least 10 mS cm-1, or 0.0001-100 mS cm-1. (I) has a melting point of below 100 degrees C, preferably below 25 degrees C, or 0-100 degrees C. Preferred Definitions:    R1 = F; and    Q+ = heterocyclic compound (3a).    EXAMPLE - Sulfuryl chloride (2 g) was charged under argon into a flask and mixed with anhydrous acetonitrile (50 ml). Then, the mixture was cooled at -20 degrees C. Potassium hexamethyldisilazane (14.81 ml) solution (0.5 M in toluene) was added dropwise over 5 minutes at -20 degrees C under argon. The mixture was stirred for 12 hours. Then, the solvent was removed and the resulting crude was dissolved in acetonitrile (100 ml) and mixed with anhydrous potassium fluoride (1.72 g). The reaction mixture was heated and stirred over 12 hours. Then, the solid particles are filtered out and the solvent was removed and replaced by distilled water (100 ml). The aqueous solution was charged into the flask, mixed with 100 ml of an aqueous solution of N,N-dimethyl-pyrrolidinium iodide (1.68 g), and worked up to give N,N-dimethyl-pyrrolidinium imidosulfuryl fluoride.