Lithium boron fluorophosphate complex compound, lithium boron fluorophosphate-containing composition, lithium boron fluorophosphate, additive for lithium secondary battery, non-aqueous electrolytic solution for battery, and lithium secondary battery

A lithium boron fluorophosphate complex compound comprising:

• a compound A that is one selected from a group of lithium boron fluorophosphates represented by the following Formula (I);
• and
• a compound B that is one selected from a group of compounds represented by the following Formulae (II) to (IX):
• wherein, in Formula (I), R0 represents an aliphatic hydrocarbon group having from 1 to 12 carbon atoms,
• wherein, in Formula (II), R1 to R3 each independently represent a hydrogen atom, an alkyl group optionally substituted with a halogen atom, an alkoxy group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, an alkynyl group optionally substituted with a halogen atom, or an aryl group;
• and R1 and R3, or R2 and R3 are optionally combined to represent an alkylene group having from 2 to 9 carbon atoms;
• in Formula (III), R4 to R7 each independently represent a hydrogen atom, an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, an alkynyl group optionally substituted with a halogen atom, or an aryl group;
• and R4 and R5, R6 and R7, or R5 and R6 are optionally combined to represent an alkylene group having from 2 to 9 carbon atoms;
• in Formula (IV), R8 and R9 each independently represent an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, an alkynyl group optionally substituted with a halogen atom, or an aryl group;
• and R8 and R9 are optionally combined to represent an alkylene group having from 2 to 9 carbon atoms;
• in Formula (V), R10 and R11 each independently represent an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, an alkynyl group optionally substituted with a halogen atom, or an aryl group;
• R10 and R11 are optionally combined to represent an alkylene group having from 2 to 9 carbon atoms or a sulfonylalkylenesulfonyl group having from 1 to 6 carbon atoms;
• and R12 represents an alkylene group having from 1 to 4 carbon atoms, optionally substituted with at least one substituent selected from the group consisting of a halogen atom, an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, and an alkynyl group optionally substituted with a halogen atom;
• in Formula (VI), R13 and R14 each independently represent an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, an alkynyl group optionally substituted with a halogen atom, or an aryl group;
• and R13 and R14 are optionally combined to represent a divalent aliphatic group having from 2 to 9 carbon atoms;
• in Formula (VII), R15 to R17 each independently represent an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, an alkynyl group optionally substituted with a halogen atom, or an aryl group;
• and R15, R16 and R17 are optionally combined to represent a divalent aliphatic group having from 2 to 9 carbon atoms;
• in Formula (VIII), R18 to R21 each independently represent an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, an alkynyl group optionally substituted with a halogen atom, or an aryl group;
• R18 and R21 are optionally combined to represent an alkylene group having from 2 to 9 carbon atoms, and R19 and R20 are optionally combined to represent an alkylene group having from 2 to 9 carbon atoms;
• and R22 represents an alkylene group having from 1 to 4 carbon atoms, optionally substituted with at least one substituent selected from the group consisting of a halogen atom, an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, and an alkynyl group optionally substituted with a halogen atom;
• and
• in Formula (IX), R23 represents an alkylene group having from 2 to 9 carbon atoms, optionally substituted with at least one substituent selected from the group consisting of a halogen atom, an alkyl group optionally substituted with a halogen atom, an alkenyl group optionally substituted with a halogen atom, and an alkynyl group optionally substituted with a halogen atom.