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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. Source


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. Source


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. Source


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. Source


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. Source

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