Hazra Anita

Indian Institute of Engineering Science and Technology, Shibpur, Hawrah, Bengal, India

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Publications (3)0.69 Total impact

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    ABSTRACT: In the title compound, C15H19N3, the pyrimidine ring is approximately planar [maximum deviation = 0.007 (1) Å] and forms a dihedral angle of 3.15 (6)° with the benzene ring. In the crystal packing, intermolecular N—H...N hydrogen bonds link pairs of neighbouring molecules into dimers with R22(8) ring motifs. These dimers are stacked along the b axis.
    Acta Crystallographica Section E Structure Reports Online 01/2010; · 0.35 Impact Factor
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    ABSTRACT: The organic molecule of the title compound, C16H12N6O2·2H2O, lies across a crystallographic inversion centre. The dihedral angle between the pyrimidine and benzene rings is 80.78 (6)°. The two pyrimidine rings are parallel by virtue of the centre of symmetry. The pyrimidine and benzene rings form dihedral angles of 41.41 (7) and 40.26 (7)°, respectively, with the amide plane. The molecules are linked by N—H...N and C—H...N hydrogen bonds into a two-dimensional network parallel to the (1overline{1}1) plane. O—H...O and C—H...O hydrogen bonds involving the water molecules link the adjacent layers into a three-dimensional network. In addition, a C—H...π interaction involving the benzene ring is observed.
    Acta Crystallographica Section E. 01/2008;
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    ABSTRACT: In the molecular structure of the title hydrazide derivative, C18H26N4O4, the conformations of the two units of 2-(2,2-dimethyl-1-oxopropyl)hydrazide substituents are not planar; these two units are attached axially to the benzene ring with C(ortho)—C—C(=O)—N torsion angles of 28.1 (2) and 31.0 (2)° [where C(ortho) is the C atom at position 4 of the benzene ring relative to the substituent at position 3 or the C atom at position 6 of the benzene ring relative to the substituent at position 1, as appropriate]. The dihedral angles between the hydrazide units and the benzene ring are 62.66 (7) and 63.84 (7)°. In the crystal structure, molecules are arranged in an anti-parallel manner and are linked by N—H...O intermolecular hydrogen bonds and weak C—H...O intermolecular interactions into a three-dimensional network. The structure is further stabilized by a weak C—H...N intramolecular interaction.
    Acta Crystallographica Section E Structure Reports Online 01/2008; · 0.35 Impact Factor