Compound, epoxy curing catalyst and method for producing compound

A compound represented by the following formula (1):

• wherein Xm+ represents an m-valent counter cation;
• R1 represents an optionally substituted aromatic group;
• R2 represents an optionally substituted alkylene group;
• R3 represents a halogen atom, a hydroxyl group, a mercapto group, a sulfide group, a silyl group, a silanol group, a nitro group, a nitroso group, a sulfonate group, a phosphino group, a phosphinyl group, a phosphonate group, or an organic group;
• m is an integer of 1 or more;
• n is an integer of 0 or more and 3 or less;
• and R2 may be bonded to R1 to form a cyclic structure
• wherein the m-valent counter cation Xm+ is acyclic or cyclic nitrogen-containing aliphatic cation, or a nitrogen-containing aromatic cation, and
• wherein the acyclic nitrogen-containing aliphatic cation is selected from the group consisting of the following three cations: