Patent ID: 6969764

Claim:
An optical recording medium containing, in the recording layer, at least one compound represented by the general formula (5): wherein R 33 , R 34 , R 35 , R 36 , R 37 , R 38 , R 39 , R 40 , R 41 , R 42 , R 43 , and R 44 each independently represent hydrogen atom, a halogen atom, hydroxyl group, a substituted or unsubstituted alkyl group, aryl group, alkoxy group, aralkyloxy group, aryloxy group, alkenyloxy group, alkylthio group, arylthio group, or heteroaryl group, a pair of R 33 and R 34 and a pair of R 35 and R 36 each may form an aliphatic ring, which may have a substituent, in combination, X 1 , Y 1 , and Z 1 each independently represent a methine group or nitrogen atom and at least two of X 1 , Y 1 , and Z 1 are nitrogen atoms and M 4 represents two hydrogen atoms, a divalent metal atom which may be unsubstituted or have a ligand, a trivalent or tetravalent metal atom or metaloid atom which may have a substituent, or an oxy metal atom.