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3-Amino-phenyl naphthalene-1-sulfonate.

ABSTRACT: In the title compound, C(16)H(13)NO(3)S, the plane of the naphthalene ring system forms a dihedral angle of 64.66 (10)° with the benzene ring. The mol-ecular structure is stabilized by weak intra-molecular C-H⋯O inter-actions and the crystal packing is stabilized by weak inter-molecular N-H⋯O and C-H⋯O inter-actions and by π-π stacking inter-actions of the inversion-related naphthalene units [centroid-centroid distance of 3.7373 (14) Å].

SUBMITTER: Vennila JP

PROVIDER: S-EPMC2967982 | biostudies-literature |

REPOSITORIES: biostudies-literature

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4-Amino-phenyl naphthalene-1-sulfonate.

Project description:In the title compound, C(16)H(13)NO(3)S, the plane of the amino-benzene ring makes a dihedral angle of 61.04?(6)° with the naphthalene ring system. Both ring systems form weak intra-molecular C-H?O hydrogen bonds with the sulfonate group. In the crystal structure, weak inter-molecular N-H?O hydrogen bonds and a C-H?? inter-action are observed.

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The crystal structure of 2-[5-(di-methyl-amino)-naphthalene-1-sulfonamido]-phenyl 5-(di-methyl-amino)-naphthalene-1-sulfonate.

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5-Methyl-1,3-phenyl-ene bis-[5-(di-methyl-amino)-naphthalene-1-sulfonate]: crystal structure and DFT calculations.

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Project description:In the mol-ecule of the zwitterionic title compound, C(10)H(9)NO(3)S, an intra-molecular N-H?O hydrogen bond results in the formation of an almost planar six-membered ring (r.m.s daviation = 0.0150?Å), which is oriented at a dihedral angle of 1.63?(3)° with respect to the naphthalene ring system. In the crystal structure, inter-molecular N-H?O hydrogen bonds link the mol-ecules into a two-dimensional network.

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Project description:The title compound, C(19)H(34)N(+)·C(10)H(7)O(4)S(-), is a charge-control agent used for toners in electrophotography. In the crystal structure, centrosymmetric anions associate through O-H?O hydrogen bonds formed between the O-H group of one anion and the sulfonate O atom of a neighbor. The components of the dimer are offset with respect to each other so that the separation between the two parallel naphthalene skeletons is about 1.6?Å. The ethyl residues of two of the butyl groups are disordered and were modelled over two postions (site occupancies = 0.33/0.67 and 0.34/0.66).

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Benzyl-tributyl-ammonium 7-hydroxy-naphthalene-1-sulfonate.

Project description:The title compound, C(19)H(34)N(+)·C(10)H(7)O(4)S(-), is a charge-control agent used for toners in electrophotography. The anions form one-dimensional chains by O-H?O hydrogen bonds in a zigzag fashion along the c axis between the OH group of one anion and the sulfonate O atom of a neighboring anion. One of the n-butyl chains of the cation is disordered over two sites in a 0.77:0.23 ratio.

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