an xrd spectrum characterized by 2 u03b8 peaks at 13 0 u00b0 25 8 u00b0 31 8 u00b0 39 9 u00b0 and 46 1 u00b0 and the absorption spectrum in a 50 by weight concentration in a 9 1 by weight mixture of makrolon cd 2000 registered trade mark and dynapol l206 registered trade mark shown in fig6 a photoconductive recording material was produced as described for example 41 except that the pigment used was brominated metal free tetrabenzotriazaporphyrin the characteristics of the thus obtained photoconductive recording material were determined with a light dose of 26 4 mj m2 of 650 nm light as described above with the following results no photosensitivity was observed up to light doses of 264 mj m2 of 650 mm light metal free tetranaphthalotriazaporphyrin was prepared by first converting 2 3 naphthalodinitrile to 1 3 diimino benz f isoindoline by reaction with ammonia in methanol as described by b l wheeler et al in j amer chem soc vol 106 p 7405 1984 and then reacting 30 0 g of 1 3 diiminobenz f isoindoline with 30 ml of nitromethane in 200 ml of methanol to form the nitro methylene compound str24 by heating under reflux for 3 days giving a yield after washing with methanol of 22 9 g its composition was confirmed by an m e of 239 100 in its mass spectrum a suspension of 19 5 g of.