Agurchand Manmull Jain College

Chennai, India

Agurchand Manmull Jain College

Chennai, India
SEARCH FILTERS
Time filter
Source Type

Paramasivam S.,Agurchand Manmull Jain College | Purushothaman S.,University of Madras | Seshadri P.R.,Agurchand Manmull Jain College | Raghunathan R.,University of Madras
Acta Crystallographica Section E: Structure Reports Online | Year: 2013

In the title compound, [Fe(C5H5)(C16H 15O3)], the cyclopentadienyl rings are in an eclipsed conformation and the benzene ring makes dihedral angles of 10.84 (9) and 12.35 (9)°, respectively, with the substituted and unsubstituted cyclopentadienyl rings. In the crystal, molecules form inversion dimers through pairs of O - H⋯O hydrogen bonds. Weak C - H⋯O hydrogen bonds are observed between the dimers. © 2013 Paramasivam et al.


Paramasivam S.,Agurchand Manmull Jain College | Purushothaman S.,University of Madras | Seshadri P.R.,Agurchand Manmull Jain College | Raghunathan R.,University of Madras
Acta Crystallographica Section E: Structure Reports Online | Year: 2013

In the title compound, C28H24ClNO3, the dihedral angles between the central benzene ring and the indole ring system and the chlorobenzene ring are 70.81 (5) and 78.62 (5)°, respectively. The molecular structure is stabilized by a weak intramolecular C - H⋯O interaction. In the crystal, pairs of C - H⋯O hydrogen bonds link the molecules into inversion dimers with an R 2 2(14) motif.


Balakrishnan B.,P.A. College | Nandakumar M.,University of Madras | Seshadri P.R.,Agurchand Manmull Jain College | Mohanakrishnan A.K.,University of Madras
Acta Crystallographica Section E: Structure Reports Online | Year: 2013

The title compound, C28H26O5, is the Diels-Alder adduct from 1,3-diphenylbenzo[c]furan and diethyl maleate. The molecule comprises of a fused tricyclic system containing two five-membered rings, which are in envelope conformations with the O atom at the flap, and a six-membered ring adopting a boat conformation. The dihedral angle between phenyl substituents in the 1,8-positions is 55.1 (1)°. The ethyl groups are disordered over two sets of sites, with occupancy ratios of 0.648 (9):0.352 (9) and 0.816 (1):0.184 (1). In the crystal, pairs of C - H⋯π interactions link the molecules into inversion dimers. © 2013 Balakrishnan et al.


Paramasivam S.,Agurchand Manmull Jain College | Srinivasan J.,University of Madras | Seshadri P.R.,Agurchand Manmull Jain College | Bakthadoss M.,University of Madras
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

The title compound, C25H23NO5, comprising two stereogenic carbon atoms of the same configuration, crystallizes in a centrosymmetric space group as a racemate. The six-membered pyran ring and the five-membered isoxazole ring adopt sofa and twisted conformations, respectively. The dihedral angle between the benzene ring and the mean plane through the near coplanar atoms of the pyran ring is 10.73 (7)°. The crystal structure features C - H⋯O hydrogen bonds. © 2012 International Union of Crystallography.


Paramasivam S.,Agurchand Manmull Jain College | Srinivasan J.,University of Madras | Seshadri P.R.,Agurchand Manmull Jain College | Bakthadoss M.,University of Madras
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

The title compound, C25H22N2O3, with three stereogenic centres, crystallizes in a centrosymmetric space group as a racemate. The pyran ring adopts a sofa conformation and the five-membered isoxazole ring exhibits an envelope conformation. The dihedral angle between the benzene ring and the mean plane through the near coplanar atoms of the pyran ring is 10.54 (9)°. In the crystal, no significant intermolecular interactions are observed.


Anuradha T.,Agurchand Manmull Jain College | Naga Siva Rao J.,University of Madras | Seshadri P.R.,Agurchand Manmull Jain College | Raghunathan R.,University of Madras
Acta Crystallographica Section E: Structure Reports Online | Year: 2014

In the title compound, C39H38N4O 8, the quinoxaline and indene subunits are essentially planar, with maximum deviations of 0.071(2) and 0.009(2)Å, respectively. The indenoquinoxaline system forms a dihedral angle of 72.81(3)° with the chromenopyrrolizine system. The two dioxolane rings, as well as the pyran ring of the chromeno group and the terminal pyrrolizine, each adopt an envelope conformation with O and C as flap atoms. The central pyrrolizine ring adopts a twisted conformation. Intramolecular C-H⋯O and C-H⋯N hydrogen bonds occur. The crystal structure exhibits C-H⋯O hydrogen bonds, and is further stablized by C-H⋯π interactions, forming a two-dimensional network along the bc plane.


Anuradha T.,Agurchand Manmull Jain College | Sivakumar G.,University of Madras | Seshadri P.R.,Agurchand Manmull Jain College | Bakthadoss M.,University of Madras
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

The title compound, C 19H 18O 5, crystallizes with two independent molecules (A and B) in an asymmetric unit in both of which the two aromatic rings are in a bisectional orientation as evidenced by the dihedral angle between them [41.7(1)° in molecule A and 35.6(1)° in molecule B]. Both molecules adopt an E configuration with respect to the C=C bond. An intramolecular C-H ···O hydrogen-bond occurs in molecule A. The crystal packing features intermolecular C-H ·· · O interactions.


PubMed | Agurchand Manmull Jain College and University of Madras
Type: Journal Article | Journal: Acta crystallographica. Section E, Structure reports online | Year: 2014

In the title compound, C39H38N4O8, the quinoxaline and indene subunits are essentially planar, with maximum deviations of 0.071(2) and 0.009(2), respectively. The indeno-quinoxaline system forms a dihedral angle of 72.81(3) with the chromenopyrrolizine system. The two dioxolane rings, as well as the pyran ring of the chromeno group and the terminal pyrrolizine, each adopt an envelope conformation with O and C as flap atoms. The central pyrrolizine ring adopts a twisted conformation. Intra-molecular C-HO and C-HN hydrogen bonds occur. The crystal structure exhibits C-HO hydrogen bonds, and is further stablized by C-H inter-actions, forming a two-dimensional network along the bc plane.


Paramasivam S.,Agurchand Manmull Jain College | Bhaskar G.,CSIR - Central Leather Research Institute | Seshadri P.R.,Agurchand Manmull Jain College | Perumal P.T.,CSIR - Central Leather Research Institute
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

In the title compound, C 25H 18N 2O 3S, the indole moiety is planar and makes a dihedral angle of 89.95 (09)° with the phenyl ring of the sulfonyl substituent. The mol-ecular conformation features a weak C - H⋯N short contact and the crystal packing reveals a weak C - H⋯O hydrogen bond.


Balakrishnan B.,P.A. College | Praveen C.,CSIR - Central Leather Research Institute | Seshadri P.R.,Agurchand Manmull Jain College | Perumal P.T.,CSIR - Central Leather Research Institute
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the title compound, C 16H 13NO, the isoxazole ring makes dihedral angles of 16.64 (7)° with 3-methyl-phenzyl ring and 17.60 (7)° with the unsubstituted phenyl ring. © Balakrishnan et al. 2011.

Loading Agurchand Manmull Jain College collaborators
Loading Agurchand Manmull Jain College collaborators