M. Krishna Kumar

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G. Chakkaravarthi7
R. Mohan Kumar7
R. Kanagadurai2
P. K. Sivakumar2
S. Sudhahar2
7G. Chakkaravarthi
7R. Mohan Kumar
2R. Kanagadurai
2P. K. Sivakumar
2S. Sudhahar
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In the crystal of the title mol-ecular salt, C6H7BrN(+)·C7H7O3S(-), the anions and cations are linked via N-H⋯O hydrogen bonds forming layers, enclosing R 2 (2)(4) ring motifs, lying parallel to (001). Within the layers there are short O⋯O contacts of 2.843 (2) Å.
In the title 1:1 adduct, C6H7N·C7H7NO2, the carb-oxy-lic acid group is twisted at an angle of 4.32 (18)° with respect to the attached benzene ring. In the crystal, the carb-oxy-lic acid group is linked to the pyridine ring by an O-H⋯N hydrogen bond, forming a dimer. The dimers are linked by N-H⋯O hydrogen bonds, generating (010) sheets.
In the title compound, CH5N2O(+)·C7H5O6S(-), the dihedral angle between the benzene ring and the mean plane of the uronium cation is 76.02 (8)°. The carboxyl group in the anion is twisted by 1.47 (9)° from the benzene ring. In the crystal, the cation is linked to the anion by weak O-H⋯O and N-H⋯O hydrogen bonds and π-π inter-actions [centroid-centroid(More)
In the title hydrated salt, C6H7N2O2 (+)·C7H5O6S(-)·H2O, the benzene ring of the cation makes a dihedral angle of 1.32 (19)° with the attached nitro group. In the anion, an intra-molecular O-H⋯O hydrogen bond with an S(6) ring motif is formed between the carb-oxyl and hy-droxy groups; the dihedral angle between the carb-oxyl group and the benzene ring is(More)
In the title mol-ecular salt, C18H22NO(+)·C7H7O3S(-), the dihedral angle between the aromatic rings in the cation is 10.00 (9)°; its alkyl side chain adopts an extended conformation. In the crystal, weak C-H⋯O and π-π [centroid-centroid distance = 3.7658 (17) Å] inter-actions link the components, generating a three-dimensional network.
In the cation of the title compound, C14H13BrN(+)·C7H7O3S(-), the dihedral angle between the benzene and pyridine rings is 8.34 (11)°. The Br atom is disordered over two positions with site occupancies of 0.74 (2) and 0.26 (2). The mol-ecular structure is stabilized by a weak intra-molecular C-H⋯O inter-actions. The crystal structure exhibits weak C-H⋯O and(More)
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