Squarylium compound and optical information recording medium using the same

摘要

A squarylium compound represented by the formula (I): wherein (1) X represents the group (A): and Y represents the group (B): or (2) X represents the group (C): and Y represents the group (D): or the group (E): or the group (B) and an optical information recording medium using the squarylium compound in the recording layer.