title: The crystal structure of 2-[5-(di-methyl-amino)-naphthalene-1-sulfonamido]-phenyl 5-(di-methyl-amino)-naphthalene-1-sulfonate.
abstract: The complete mol-ecule of the title compound, C30H29N3O5S2, is generated by a crystallographic twofold axis: the O atom and NH group attached to the central benzene ring are statistically disordered. The dihedral angle between the naphthalene ring system and the central benzene ring is 52.99 (6)°, while the pendant naphthalene ring systems subtend a dihedral angle of 68.17 (4)°. An intra-molecular C-H⋯O hydrogen bond closes an S(6) ring. In the crystal, the mol-ecules are linked by weak C-H⋯O hydrogen bonds.
authors.affiliation: Department of Physics, Faculty of Science and Technology, Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand.
authors.forename: Kittipong
authors.initials: K
authors.lastname: Chainok
authors.affiliation: Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok 10903, Thailand.
authors.forename: Tanwawan
authors.initials: T
authors.lastname: Duangthongyou
authors.affiliation: Supramolecular Chemistry Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
authors.forename: Thawatchai
authors.initials: T
authors.lastname: Tuntulani
authors.affiliation: Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10903, Thailand.
authors.forename: Apinya
authors.initials: A
authors.lastname: Chuenka
authors.affiliation: Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Kasetsart University, Bangkok 10903, Thailand.
authors.forename: Boontana
authors.initials: B
authors.lastname: Wannalerse
keywords: crystal structure; dansyl derivatives; disorder; hydrogen bonding; π-stacking