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crystal data
The crystal data of naphthaceno[5,6-cd]-1,2-dithiole-7,7,8,8-tetracyanoquinodimethane, C30H14N4S2, have been determined from precession, Weissenberg and diffractometer techniques: monoclinic, space group Cc or C2/c, a = 19.252 (7), b = 8.656 (3), c = 13.879 (5) Å, β = 90.28 (3)°. Preparation method and powder data are presented.