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Shanthakumari R.,Government Arts College for Women | Hema R.,Seethalakshmi Ramaswami College Autonomous | Ramamurthy K.,Bharathidasan University | Stoeckli-Evans H.,University of Neuchatel
Acta Crystallographica Section E: Structure Reports Online | Year: 2011

In the cation of the title compound, [Cd(CH5N3S) 2-(C2H6OS)2](C6H 2N3O7)2·2H2O, the CdII atom is located on an inversion center. It is hexacoordinated in an octahedral fashion by two thiosemicarbazide molecules, which coordinate in a bidentate manner via the S and N atoms, and to the O atom of two dimethyl sufoxide (DMSO) molecules. The charges are equilibrated by two picrate anions and the complex crystallizes as a dihydrate. In the crystal, these units are linked by a number of O - H⋯O and N - H⋯S hydrogen bonds and weak C - H⋯O interactions, forming a threedimensional network. Source


Srinivasan N.,P.A. College | Rizwana Begum S.R.A.,Seethalakshmi Ramaswami College Autonomous | Sridhar B.,Indian Institute of Chemical Technology | Anitha A.G.,Seethalakshmi Ramaswami College Autonomous
Acta Crystallographica Section E: Structure Reports Online | Year: 2013

The asymmetric unit of the title compound, C18H 16F2N2·H2O, contains two independent molecules (A and B), and two independent water molecules of crystallization. In molecule A, the imidazole ring makes dihedral angles of 47.46(7) and 60.98(6)° with the 2,4-difluorophenyl and methylphenyl rings, respectively. The corresponding angles in molecule B are 45.85(7) and 62.78(7)°, respectively. The dihedral angle between the two benzene rings is 64.98(7)° in molecule A and 65.53(7)° in molecule B. In the crystal, the two independent molecules are linked by O - H⋯N and O - H⋯O hydrogen bonds, forming chains propagating along [100]. These chains are linked via C - H⋯F hydrogen bonds, forming slab-like two-dimensional networks lying parallel to (001). Source


Rizwana Begum S.,Seethalakshmi Ramaswami College Autonomous | Hema R.,Seethalakshmi Ramaswami College Autonomous | Srinivasan N.,P.A. College | Anitha A.G.,Seethalakshmi Ramaswami College Autonomous
Acta Crystallographica Section E: Structure Reports Online | Year: 2013

In the title compound, C18H18N2O, the imidazole ring makes dihedral angles of 68.26 (7) and 22.45 (9)° with the methoxyphenyl and phenyl rings, respectively. The dihedral angle between the methoxyphenyl and phenyl ring is 71.86 (7)°. In the crystal, weak intermolecular C - H...O and C - H...N hydrogen bonds link the molecules into columns propagated in [101]. Source


Rizwana Begum S.,Seethalakshmi Ramaswami College Autonomous | Srinivasan N.,P.A. College | Anitha A.G.,Seethalakshmi Ramaswami College Autonomous
Acta Crystallographica Section E: Structure Reports Online | Year: 2014

In the title compound, C18H17FN2O, the imidazole ring makes dihedral angles of 68.81(6) and 25.20(8)° with the methoxyphenyl and fluorophenyl rings, respectively. The dihedral angle between the methoxyphenyl and fluorophenyl ring is 71.89(6)°. In the crystal, molecules are linked into inversion dimers with an R2 2(8) graph-set motif by pairs of weak C-H⋯F interactions. Source


Rizwana Begum S.,Seethalakshmi Ramaswami College Autonomous | Venkateswaramoorthi R.,Annamalai University | Krishnasamy K.,Annamalai University | Anitha A.G.,Seethalakshmi Ramaswami College Autonomous
Acta Crystallographica Section E: Structure Reports Online | Year: 2013

The asymmetric unit of the title compound, C22H23F2NO, contains two independent molecules, A and B. The bicyclic system adopts a twin-chair conformation in both molecules. The dihedral angles between the fluorophenyl rings are 55.27 (8) and 56.37 (7)° in molecules A and B, respectively. The NH groups are not involved in hydrogen bonding due to the steric hindrance of fluorophenyl groups. The crystal structure features weak C - H⋯O interactions. Source

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