Pratap Lakshman

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The asymmetric unit of the title compound, C21H15Cl2N5O4, contains two independent mol-ecules (A and B) having similar conformations. The amine (NH2) group forms an intra-molecular hydrogen bond with the benzoyl group, giving an S(6) ring motif in both mol-ecules. The central six-membered rings adopt sofa conformations and the imidazole rings are planar(More)
In the title compound, C(34)H(35)N(3)O(2), the polysubstituted piperidine ring adopts a chair conformation and the isoxazolidine ring is in an envelope form. The mol-ecules are linked into a chain along the b axis by O-H⋯N, C-H⋯O and C-H⋯N inter-actions. The chains are cross-linked via weak C-H⋯π inter-actions.
In the title compound, C26H16ClN3, the dihedral angles between the central pyridine ring and the pendant phenyl, chloro-benzene and indole rings are 18.52 (12), 48.97 (11) and 21.20 (10)°, respectively. An intra-molecular C-H⋯Nc (c = cyanide) hydrogen bond occurs. In the crystal, inversion dimers linked by pairs of N-H⋯Nc hydrogen bonds generate R 2 (2)(16)(More)
The title compound, C35H28N4O6S, crystallizes with two mol-ecules in the asymmetric unit. In both mol-ecules, the piperidine ring adopts a shallow-chair conformation, the thia-zole ring adopts a twisted conformation about the Cm-N bond (m = methine) and the pyrrole ring adopts an envelope conformation with the C atom shared with the thia-zole ring as the(More)
In the title compound, [Zn(H(2)O)(6)](C(6)H(2)N(3)O(7))(2), the Zn(II) ion is located on an inversion center and is coordinated by six water mol-ecules in an octa-hedral geometry. The picrate anions have no coordination inter-actions with the Zn(II) atom. The three nitro groups are twisted away from the attached benzene ring by19.8 (3), 6.5 (4) and 28.6(More)
In the title compound, C(14)H(12)O(4), the indene unit is essentially planar [r.m.s. deviation = 0.0309 (1) Å] and the cyclo-penta-none ring adopts a twist form. In the crystal, mol-ecules are joined via pairs of O-H⋯O hydrogen bonds into centrosymmetric dimers.
In the title compound C21H17N5O4·C2H6OS, the central six-membered ring derived from 1,4-di-hydro-pyridine adopts a distorted boat conformation with a small puckering amplitude of 0.127 (3) Å. The sums of bond angles around the pyridine N atom [358.7 (2)°] and the other imidazolidine N atom [60 (2)°] indicate that these atoms are in sp(2) hybridization,(More)
In the title E isomer of the racemic compound, C37H32F2N2O2, the pyridinone ring adopts a twisted half-chair conformation with the N atom deviating by -0.355 (3) Å and with the methyl-ene C atom next to octa-hydro-indolizine moiety deviating by 0.415 (3) Å from the mean plane defined by other four atoms. In the octa-hydro-indolizine system, the pyrrolidine(More)
In the title compound, C 34 H 30 N 2 O 6 Á0.5C 4 H 8 O 2 , there are two molecules in the asymmetric unit and the structure is stabilized by C—HÁ Á ÁO interactions. The two nonsolvent molecules of the asymmetric unit are linked together by a weak C—HÁ Á ÁO hydrogen bond. The ethyl acetate molecule is present as a space filler and does not participate in the(More)