NEW TETRACYANOQUINODIMETHANE COMPOUND, CYANINE DYE COMPOUND COMPRISING THE SAME AS COUNTERANION AND OPTICAL INFORMATION RECORDING MEDIUM USING THE CYANINE DYE COMPOUND

摘要

PROBLEM TO BE SOLVED: To obtain a new tetracyanoquinodimethane compound used for an optical information recording medium, etc. SOLUTION: This compound is represented by the following general formula (I) (wherein, R1 denotes a substituted or an unsubstituted alkylene group; L denotes a single bond or a divalent linking group; R2 denotes a substituent group; CI denotes a proton, a metallic cation or an organic cation; p denotes an integer of 1-4; r denotes an integer of 0-3; and m denotes a number required to neutalize electric charges).