To provide a novel compound that has a novel crystal system, is useful as an organic photoconductor that is used in the photo-sensitive layer of an electrophotographic photoreceptor and gives an electrophotographic photoreceptor that is practically useful as not only for high-speed copying machines but also for laser printers.
The objective compound is represented by formula I (M is H, or an atom or compound that can bond covalently or coordinately to tetrapyrazino-porphyrazine) and has diffraction peaks at 4.6°, 7.1°, 8.0°, and/or 24.0° at the Bragg angle of 2 θ ±0.3°, in the X-ray diffraction. The compound of formula I is prepared by reaction of benzil with diamino-maleonitrile usually in a solvent, preferably at 100-200°C to form 2,3-dicyano-5,6-diphenylpyrazine of formula II, before the product of formula II is allowed to react with a metal chloride or a metal alkoxide, preferably at 100-250°C.
SHIYOJI MASAYUKI
NANBA MICHIHIKO
