Infrared-absorptive compound and optical recording medium making use of the same

Claim 1

An optical recording medium comprising a recording layer formed on a substrate containing an infrared-absorptive compound represented by the following formula (I) or (II) ##STR1374## wherein R 0 to R 7 each represent (a) a hydrogen atom or a monovalent organic residual group, at least one of R 0 to R 7 being a monovalent organic residual group having a fluorine atom, or (b) a group of atoms necessary for at least one of combinations R 0 and R 1 , R 2 and R 3 , R 4 and R 5 and R 6 and R 7 to form together with a nitrogen atom a substituted 5-membered ring having a fluorine atom, a substituted 6-membered ring having a fluorine atom or a substituted 7-membered ring having a fluorine atom, other combinations each being a hydrogen atom or a monovalent organic residual group; X.sup.⊖ represents an anionic residual group; in formula (I), "A" represents ##STR1375## and in formula (II), "B" represents ##STR1376## wherein n represents an integer of 1 or 2.