Ionic complex, electrolyte for nonaqueous electrolyte battery, nonaqueous electrolyte battery and ionic complex synthesis method

An electrolyte for a nonaqueous electrolyte battery, comprising an ionic complex having a chemical structure represented by the following general formula (3):

• wherein in the general formula (3),
• D is at least one selected from a halogen ion, a hexafluorophosphate anion, a tetrafluoroborate anion, a bis(trifluoromethane sulfonyl)imide anion, a bis(fluorosulfonyl)imide anion, a (fluorosulfonyl)(trifluoromethane sulfonyl)imide anion, and a bis(difluorophosphonyl)imide anion;
• F is fluorine atom;
• M is any one selected from the group consisting of Al, B, Si, P, As, and Sb;
• O is oxygen atom;
• N is nitrogen atom;
• Y is carbon atom or sulfur atom, wherein when Y is carbon atom, q is 1, and when Y is sulfur atom, q is 1 or 2;
• X is carbon atom or sulfur atom, wherein when X is carbon atom, r is 1, and when X is sulfur atom, r is 1 or 2;
• R1 represents a hydrocarbon group which may have a ring, a heteroatom, or a halogen atom, the hydrocarbon group having 1 to 10 carbon atoms, wherein R1 may have a branched chain or a ring structure when the number of carbon atoms is 3 or more, or —N(R2)—, and
• R2 at this time represents hydrogen atom, alkali metal atom, a hydrocarbon group which may have a ring, a heteroatom, or a halogen atom, the hydrocarbon group having 1 to 10 carbon atoms,
• wherein R2 can also have a branched chain or a ring structure when the number of carbon atoms is 3 or more;
• R4 and R5 each independently represents a hydrocarbon group which may have a ring, a heteroatom, or a halogen atom, the hydrocarbon group having 1 to 10 carbon atoms, wherein R4 and R5 can also have a branched chain or a ring structure when a number of carbon atoms is 3 or more, and
• may also have a ring structure including each other as shown in the following general formula (4):
• c is 0 or 1, wherein when n is 1, c is 0, in which when c is 0, D is absent, and when n is 2, cis 1;
• o is 2 or 4, n is 1 or 2, p is 0 or 1, q is 1 or 2, r is 1 or 2, ands is 0 or 1,
• wherein when p is 0, a direct bond is formed between Y and X;
• when s is 0, N(R4)(R5) and R1 are directly bonded to each other, and, at that time, can also have structures of the following (5) to (8),
• wherein in (6) and (8), the direct bond is a double bond, R5 is absent, and
• as shown in (7), a structure in which the double bond is out of the ring may also be taken;
• and
• R6 and R7 in this case each independently represents hydrogen atom, a hydrocarbon group which may have a ring, a heteroatom, or a halogen atom, the hydrocarbon group having 1 to 10 carbon atoms, wherein when the number of carbon atoms is 3 or more, R6 and R7 can also have a branched chain or a ring structure.