P. Nithya
VIT University
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Publication
Featured researches published by P. Nithya.
Chemical Papers | 2011
P. Nithya; Fazlur-Rahman Nawaz Khan; Selvaraj Mohana Roopan; Uma Shankar; Jong Sung Jin
An efficient and environmentally benign one-pot method for the synthesis of 1-methyl-2,6-diarylpiperidin-4-ones using montmorillonite K-10 as a catalyst has been developed. Antimicrobial activity of the compounds has been tested against selected representatives of Gram-positive and Gram-negative bacteria and fungi.
Acta Crystallographica Section E-structure Reports Online | 2009
P. Manivel; V.R. Hathwar; P. Nithya; K. Prabakaran; F. Nawaz Khan
The title compound, C15H13N3, contains two independent molecules in the asymmetric unit. The isoquinoline moiety and phenyl rings form dihedral angles of 4.38 (2) and 10.14 (3)° in the two independent molecules. The crystal packing is stabilized by N—H⋯N molecular dimers formed across a center of symmetry.
Acta Crystallographica Section E-structure Reports Online | 2009
P. Nithya; V.R. Hathwar; T. Maiyalagan; Canan Kazak; F. Nawaz Khan
In the title moleclue, C19H21NO, the 4-piperidone ring adopts a chair conformation in which the two benzene rings and the methyl group attached to C atoms all have equatorial orientations. In the crystal structure, centrosymmetric dimers are formed through weak intermolecular C—H⋯O hydrogen bonds [the dihedral angle between the aromatic rings is 58.51 (5)°].
Acta Crystallographica Section E-structure Reports Online | 2009
P. Manivel; V.R. Hathwar; P. Nithya; R. Subashini; F. Nawaz Khan
The title compound, C23H16ClNOS, exhibits dihedral angles of 11.73 (1) and 66.07 (1)°, respectively, between the mean plane of the isoquinoline system and the attached phenyl ring, and between the isoquinoline system and the chlorophenyl ring. The dihedral angle between the phenyl and chlorophenyl rings is 54.66 (1)°.
Acta Crystallographica Section E-structure Reports Online | 2009
P. Manivel; V.R. Hathwar; R. Subashini; P. Nithya; F. Nawaz Khan
The title compound, C15H11NO, consists of a planar isoquinolinone group to which a phenyl ring is attached in a twisted fashion [dihedral angle = 39.44 (4)°]. The crystal packing is dominated by intermolecular N—H⋯O and C—H⋯O hydrogen bonds which define centrosymmetric dimeric entitities.
Acta Crystallographica Section E-structure Reports Online | 2009
R. Subashini; V.R. Hathwar; P. Nithya; K. Prabakaran; Fazlur-Rahman Nawaz Khan
In the title molecule, C13H15N3O2, the dihedral angle between the mean plane of the 1,3-dioxolane group and the 2-hydrazino-7-methylisoquinoline unit is 85.21 (5)°. The conformation of the molecule is influenced by bifurcated N—H⋯(O,O) and N—H⋯N intramolecular hydrogen bonds. In the crystal structure, molecules are linked via intermolecular N—H⋯O hydrogen bonds, forming extended chains along [001].
Acta Crystallographica Section E-structure Reports Online | 2009
P. Nithya; V.R. Hathwar; Sriramakrishnaswamy Kone; N. Malathi; F. Nawaz Khan
In the title moleclue, C25H23NO2, the 4-piperidone ring adopts a boat conformation. The molecular conformation is stabilized by an intramolecular C—H⋯O hydrogen bond. In the crystal, molecules are connected through weak intermolecular C—H⋯O hydrogen bonds.
Acta Crystallographica Section E-structure Reports Online | 2009
P. Nithya; Fn Nawaz Khan; Motakatla Novanna; Vr Hathwar; Sw Ng
In the molecule of the title compound, C20H23NO3, the bulky methoxyphenyl substituents at the equatorial 2,6-positions crowd the vicinity of the equatorial amino H atom and prevent it from forming intermolecular hydrogen bonds. The piperidine ring adopts a distorted chair conformation.
Acta Crystallographica Section E-structure Reports Online | 2010
Krishnakumar; Fazlur-Rahman Nawaz Khan; V.R. Hathwar; P. Nithya; S Suresh
All the non-H atoms of the title compound, C10H11NO2, are almost coplanar [maximum deviation = 0.040 (3) Å]. The crystal structure is stabilized by C—H⋯O hydrogen bonds.
Acta Crystallographica Section E-structure Reports Online | 2009
F. Nawaz Khan; P. Nithya; V Krishna Kumar; V.R. Hathwar; Seik Weng Ng
The asymmetric unit of the title compound, C20H20ClNO2, contains two crystallographically independent molecules of similar geometry. The piperidine ring adopts a distorted boat conformation in both molecules, in which the N atom assumes an almost planar configuration.