| abstract |
The invention relates to optical data media which contain at least one light-adsorbing component in the form of a Co (III) phalocyanin in the information layer thereof. The metallic centre of Co has an axial substituent R<1 >and an axial ligand R<2 >provided with a co-ordination bond. R<1> is CN, SCN, halogen, inter linea Cl, Br or F, alkoxy, aryloxy, arythio or alkylthio, and R<2> is not a ligand or is an eventually substituted amine, water, alcohol, H2S thioalcohol or isonitrile. |