METAL COMPLEXES OF SQUARYLIUM COMPOUNDS AND OPTICAL RECORDING MEDIA COMPRISING SAME

摘要

Provided are metal complexes of squarylium compounds that have excellent record-playback characteristics, are used in optical recording media and are represented by Formula (I) [in the formula, R1 represents an aryl group that may have a substituting group. R2 represents an alkyl group that may have a substituting group. R3 represents an alkyl group that may have a substituting group. Either R4 or R5 represents a hydrogen atom and the other represents Formula (II)(in the formula, R6 represents an aryl group that may have a substituting group)].