| abstract |
The invention relates to an optical recording medium comprising a substrate, a reflecting layer and a recording layer, wherein the recording layer comprises a compound of formula [L1Mr-4L-2]o [Am]p [Zn+ q(I), [L1Mr-3L-3]0 [Am]P[Zn+]q(II) or [L3Mr-2L4]0 [Am]p[Zn+]q (III), or where applicable a mesomeric or tautomeric form thereof, wherein L1 and L2 are each independently of the other and L3 and L4 are each independently of the other wherein Q1 isCR1orN,Q2iSO,S,NR10orQ5=Q8,Q3 is CR3orN,Q4 isO,S,NR10or Q7=Q8, Q5 is CR5 or N , Q6 is CR6 or N , Q7 is CR7 or N , Q8 is CR8 or N , and Q9 is 0, S, NR10 or Q6=Q8; Mr, Am-, Zn+, R2, R9 are as defined in the claims. |