Compound, ink, resist composition for color filter, sheet for heat-sensitive transfer recording, and toner

A compound having a structure represented by formula (1):

• wherein, in the formula (1):
• R1 and R2 each independently represent any one functional group selected from the group consisting of a 2,6-dichlorophenyl group, a 2,6-dichloro-4-butylphenyl group, and a 2,6-dichloro-4-butoxyphenyl group;
• R3 and R4 each independently represent a C2-C12 alkyl group having a substituent or an unsubstituted C2-C12 alkyl group, a cyano group, a trifluoromethyl group, or a halogen atom;
• R5 and R6 each independently represent a hydrogen atom or an alkyl group;
• R7 represents a structure represented by formula (2) or (3):
• wherein, in the formula (2):
• R8 represents a —SO3− group, an alkoxysulfonyl group, a sulfonic acid amide group, a halogen atom, a perfluoroalkyl group, or a nitro group;
• and
• R9 represents a hydrogen atom or a halogen atom, and
• wherein, in the formula (3), R10 to R12 each independently represent a hydrogen atom, an alkyl group, or an aryl group having a substituent or an unsubstituted aryl group;
• and
• X− represents an anion, and in a case where at least one anionic substituent is included in a molecule, X− may not be present.