Ciba-geigy Corporation

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Beat Schmidhalter

Rudolf Naef

Heinz Wolleb

Heinz Spahni

The invention relates to phthalocyanines and metal complexes thereof with divalent metals or divalent oxo metals, which contain at least one phosphorus-containing substituent bonded to the peripheral carbon skeleton via the phosphorus atom. The compounds preferably conform to the general structural formula (G).sub.k -A-(Q).sub.l, in which A is a phthalocyanine or metal complex thereof with a divalent metal or a divalent oxo metal, G is a phosphorus-containing substituent, Q is a further substituent as defined below, the index k is a number from 1 to 16, and l, independently thereof, is 0 or a number from 1 to 15, with the proviso that the sum of k and l is a number less than or equal to 16. The invention also relates to a material for the optical recording and storage of information, in which at least one storage layer (2) of a novel phthalocyanine compound or a metal complex thereof has been applied to a transparent, dielectric carrier material (1).

Phthalocyanines substituted by phosphorus-containing groups

The compounds of the formula I ##STR1## in which Y and Y.sub.1 are each, independently of one another, O, S, NH or N-alkyl, N-cycloalkyl, N-phenyl or N-benzyl, or Y and Y.sub.1 are together N-alkylene-N, R and R.sub.1 are each, independently of one another, H, alkyl, cycloalkyl, aralkyl or aryl, R.sub.2 and R.sub.3 are each, independently of one another, H, or R.sub.2 forms, together with R.sub.6 and the N and C atoms linking them, a 5- or 6-membered ring and R.sub.3 is H, or R.sub.3 forms, together with R.sub.7 and the N and C atoms linking them, a 5- or 6-membered ring and R.sub.2 is H, R.sub.4 and R.sub.5 are each, independently of one another, H, R.sub.4 forms, together with R.sub.8 and the N and C atoms linking them, a 5- or 6-membered ring and R.sub.5 is H, or R.sub.5 forms, together with R.sub.9 and the N and C atoms linking them, a 5- or 6-membered ring and R.sub.4 is H, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are each, independently of one another, H, alkyl, cycloalkyl, aralkyl or aryl, or R.sub.6 and R.sub.8 and/or R.sub.7 and R.sub.9 form, together with the N atom linking them, a piperidine radical, a morpholine radical or an unsubstituted piperazine radical or a piperazine radical substituted on the N atom by C.sub.1 -C.sub.4 alkyl, hydroxyl-C.sub.1 -C.sub.4 alkyl or amino-C.sub.1 -C.sub.4 alkyl, Z is H or aryl and An.sup..crclbar. is an anion of a monobasic acid, the alkyl or cycloalkyl being unsubstituted or substituted by halogen, hydroxyl, C.sub.1 -C.sub.4 alkoxy, cyano or phenyl, and the aryl or aralkyl being unsubstituted or substituted by halogen, hydroxyl, NH-alkyl, N(alkyl).sub.2, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.4 alkoxy, carboxyl, alkoxycarbonyl, carbonamido, mono- or dialkylcarbonamido, nitro or CN, are suitable as light-absorbing substances in optical recording media.

Nir dyes, methods of preparing them and their use

The compounds of the formula I ##STR1## in which Y and Y.sub.1 are each, independently of one another, O, S, NH or N-alkyl, N-cycloalkyl,

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Birsfelden, Switzerland

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