Stable (CF3)2N— salts and process for preparing them

A process for preparing a compound of the formula

• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, S or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• wherein an alkali metal salt of the formula
• D+−N(CF3)2 (II)
• where D+ is an alkali metal, is reacted in a polar organic solvent with a salt of the formula
• [([R1(CR2R3)k]lAx)yKt]+−E (III)
• where
• Kt=N, P, As, Sb, S or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4, and
• −E is F−, Cl−, Br−, I−, BF4−, ClO4−, AsF6−, SbF6−, or PF6−.

An electrolyte comprising:

• a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• and
• an alkali metal oxide of formula:
• Li+OR−
• where R
• is an aromatic or aliphatic carboxylic, dicarboxylic or sulfonic acid radical, or is phenyl, naphthyl, anthracenyl or phenanthrenyl, which is optionally monosubstituted to tetrasubstituted by A or Hal, or
• is a pyridyl, pyrazyl or bipyridyl, which is optionally monosubstituted to trisubstituted by A or Hal, or
• is an aromatic hydroxycarboxylic acid or aromatic hydroxysulfonic acid, which is optionally monosubstituted to tetrasubstituted by A or Hal, and
• Hal is F, Cl or Br, and
• A is alkyl having from 1 to 6 carbon atoms, which is optionally monohalogenated to trihalogenated.

An electrolyte comprising:

• a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• and
• a lithium complex salt of formula:
• where
• R1 and R2 are identical or different, optionally joined directly to one another by a single or double bond, and are, in each case individually or together, a phenyl, naphthyl, anthracenyl or phenanthrenyl, which is optionally monosubstituted to hexasubstituted by alkyl, alkoxy or halogen,
• or are, in each case individually or together, a pyridyl, pyrazyl or pyrimidyl, which is optionally monosubstituted to tetrasubstituted by alkyl, alkoxy or halogen,
• or are, in each case individually or together, a hydroxybenzenecarboxyl, hydroxynaphthalenecarboxyl, hydroxybenzenesulfonyl or hydroxynaphthalenesulfonyl, which is optionally monosubstituted to tetrasubstituted by alkyl, alkoxy or halogen,
• R3-R6 optionally, in each case individually or in pairs, optionally joined to one another directly by a single or double bond, have the following meanings:
• alkyl, alkyloxy or halogen;
• or
• a phenyl, naphthyl, anthracenyl or phenanthrenyl, which is optionally monosubstituted to hexasubstituted by alkyl, alkoxy groups or halogen;
• or
• a pyridyl, pyrazyl or pyrimidyl, which is optionally monosubstituted to tetrasubstituted by alkyl, alkoxy or halogen.

An electrolyte comprising:

• a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• and
• a compound of formula:
• X—(CYZ)m—SO2N(CR1R2R3)2
• where
• X is H, F, Cl, CnF2n+1, CnF2n−1 or (SO2)kN(CR1R2R3)2,
• Y is H, F or Cl
• Z is H, F or Cl
• R1, R2 and R3 are H and/or alkyl, fluoroalkyl or cycloalkyl
• m is 0-9 and, if X=H, m1≠0
• n is 1-9;
• and
• k is 0 if m=0 and k=1 if m=1-9.

An electrolyte comprising:

• a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• and
• a compound of formula:
• Mx+[EZ]x/yy−
• where:
• x, y are 1, 2, 3, 4, 5 or 6;
• Mx+ is a metal ion;
• E is a Lewis acid of the formula:
• BR1R2R3, AlR1R2R3, PR1R2R3R4R5, AsR1R2R3R4R5 or VR1R1R2R3R4R5, wherein
• R1-R5 are identical or different, optionally joined directly to one another by a single or double bond, and optionally, in each case individually or together,
• a halogen,
• an alkyl or alkoxy radical optionally substituted by F, Cl, Br,
• an aromatic ring, optionally bonded via oxygen, of phenyl, naphthyl, anthracenyl or phenanthrenyl, which is optionally monosubstituted to hexasubstituted by alkyl or F, Cl, Br;
• an aromatic heterocyclic ring, optionally bonded via oxygen, of pyridyl, pyrazyl or pyrimidyl, optionally monosubstituted to tetrasubstituted by alkyl or F, Cl, Br;
• and
• Z is OR6, NR6R7, CR6R7R8, OSO2R6, N(SO2R6)(SO2R7), C(SO2R6)(SO2R7)(SO2R8) or OCOR6, where
• R6 to R8 are identical or different, optionally joined directly to one another by a single or double bond, and are, in each case individually or together,
• a hydrogen or as defined for R1 to R5.

An electrolyte comprising:

• a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• and
• a compound of formula:
• where:
• M is a metal ion or tetraalkylammonium ion,
• x, y are 1, 2, 3, 4, 5 or 6,
• R1 to R4 are identical or different alkoxy or carboxyl radicals optionally joined directly to one another by a single or double bond.

An electrolyte comprising:

• a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• and
• a lithium flororalkylphosphate of formula:
• Li+[PFx(CyF2y+1−zHz)6−x]− (I)
• where
• 1≦x≦5
• 3≦y≦8
• 0≦z≦2y+1
• and the ligands (CyF2y+1−zHz) are identical or different, with the exception of compounds of the general formula (I′)
• Li+[PFa(CHbFc(CF3)d)e]− (I′)
• in which
• a is an integer from 2 to 5, b=0 or 1, c=0 or 1, d=2 and
• e is an integer from 1 to 4, with the provisos that b and c are not simultaneously 0 and the sum of a+e is 6 and the ligands (CHbFc(CF3)d) can be identical or different.

An electrolyte comprising:

• a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• and
• a salt of formula:
• Li[P(OR1)a(OR2)b(OR3)c(OR4)dFe]
• where 0<a+b+c+d≦5 and a+b+c+d+e=6, and R1 to R4 are each, independently of one another, alkyl, aryl or heteroaryl radicals, optionally at least two of R1 to R4 are joined directly to one another by a single or double bond.

An electrolyte cell, comprising:

• an electrolyte comprising a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• a cathode;
• an anode;
• and
• a separator.

An electrolyte comprising a compound of the formula

• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt =N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4;
• and an alkali-metal borate of formula:
• Li+B−(OR1)m(OR2)p
• where
• m and p are 0, 1, 2, 3 or 4 with m+p=4 and
• R1 and R2 are identical or different,
• optionally joined directly to one another by a single or double bond, and are, in each case individually or together, an aromatic or aliphatic carboxylic, dicarboxylic or sulfonic acid radical, or
• are, in each case individually or together, phenyl, naphthyl, anthracenyl or phenanthrenyl, which is optionally monosubstituted to tetrasubstituted by A or Hal, or
• are, in each case individually or together, a pyridyl, pyrazyl or bipyridyl, which is optionally monosubstituted to trisubstituted by A or Hal, or
• are, in each case individually or together, an aromatic hydroxycarboxylic acid or an aromatic hydroxysulfonic acid, which is optionally monosubstituted to tetrasubstituted by A or Hal, and
• Hal is F, Cl or Br and
• A is alkyl having from 1 to 6 carbon atoms, which is optionally monohalogenated to trihalogenated.

A method of preparing a liquid-crystal compound by providing a reagent for introducing N(CF3)2 groups into organic compounds, comprising the compound of the formula

• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=1 and 1 in the case where x=0
• x=0 or 1
• y=1-4.

An electrochemical cell, comprising:

• an electrolyte comprising a compound of the formula
• [([R1(CR2R3)k]lAx)yKt]+−N(CF3)2 (I)
• where
• Kt=N, P, As, Sb, S or Se,
• A=N, P, P(O), O, S, S(O), SO2, As, As(O), Sb or Sb(O),
• R1, R2 and R3 are each independently H, halogen, optionally substituted alkyl of formula CnH2n+1, optionally substituted alkenyl having up to 18 carbon atoms and one or more double bonds, optionally substituted alkynyl having up to 18 carbon atoms and one or more triple bonds, optionally substituted cycloalkyl of formula CmH2m−1, optionally mono- or polysubstituted phenyl, or optionally substituted heteroaryl,
• Kt can be included in a cyclic or heterocyclic ring,
• the groups bonded to Kt may be identical or different, where
• n=1-18
• m=3-7
• k=0 or 1-6
• l=1 or 2 in the case where x=0
• x=0 or 1
• y=1-4;
• a cathode;
• an anode;
• and
• a separator.