MAGNESIUM TETRA-2,3-PYRAZINOPORPHYRAZINE CRYSTAL, PHOTOCONDUCTIVE MATERIAL AND ELECTROPHOTOGRAPHIC RECEPTOR CONTAINING THE MATERIAL

摘要

PROBLEM TO BE SOLVED: To obtain a new magnesium tetra-2,3-pyrazinoporphyrazine crystal having excellent photosensitivity and durability as a photoconductive material and provide an electrophotographic receptor produced by using the crystal as a photoconductive material of a photosensitive layer. SOLUTION: This magnesium tetra-2,3-pyrazinoporphyrazine crystal has at least one main diffraction peak at a Bragg angle (2θ±0.2 deg.) of 27.1 deg. and is free from diffraction peak at 9.34 deg. or has main diftraction peaks at least at 13.56 deg., 15.88 deg. and 26.77 deg. in an X-ray diffraction spectrum taken by using Cukαray (λ=1.54Å). The crystal is useful as a photoconductive material for electrophotographic receptor. An electrophotographic receptor can be produced by including the crystal in a photosensitive layer.