Two independent molecules comprise the asymmetric unit of the title chalcone, C25H17Cl2NO, and while each has an E configuration about the ethyl-ene double bond, they differ in the relative orientations of the carbonyl and ethyl-ene double bonds within the prop-2-en-1-one residues, i.e. anti and syn. For each molecule, the benzene [dihedral angles = 71.04 (9) and 73.34 (12)°] and prop-2-en-1-one [C - C - C - O = 91.2 (2) and -119.1 (3)°] substituents are twisted out of the plane of the quinoline moiety to which they are attached. The crystal structure is stabilized by C - H⋯π and π-π [Cg(quinoline) ⋯Cg(quinoline) = 3.7809 (12) and 3.8446 (11) Å] interactions.

Sarveswari S

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Vijayakumar V

Ng S.W

Tiekink E.R.T.

Fulltext

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

(2E)-1-(6-Chloro-2-methyl-4-phenyl-quinolin-3-yl)-3-(4-chloro-phen-yl)prop-2-en-1-one.

Acta Crystallographica Section E Structure Reports Online

In this study, the correlation between chemical structures and various parameters such as steric effects and electrostatic interactions to the inhibitory activities of quinolinyl chalcone derivatives is derived to identify the key structural elements required in the rational design of potent and novel anti-malarial compounds. The molecular docking simulations and Comparative Molecular Field Analysis (CoMFA) are carried out on 38 chalcones derivatives using Plasmodium falciparum lactate dehydrogenase (PfLDH) as potential target. Surflex-dock is used to determine the probable binding conformations of all the compounds at the active site of pfLDH and to identify the hydrogen bonding interactions which could be used to alter the inhibitory activities. The CoMFA model has provided statistically significant results with the cross-validated correlation coefficient (q2) of.850 and the non-cross-validated correlation coefficient (r2) of.912. Standard error of estimation (SEE) is.280 and the optimum number of component is five. The predictive ability of the resultant model is evaluated using a test set comprising of 13 molecules and the predicted r2 value is.885. The results provide valuable insight for optimization of quinolinyl chalcone derivatives for better anti-malarial therapy. © 2014 Taylor &amp; Francis.

Journal of Biomolecular Structure and Dynamics

In silicoanalysis reveals the anti-malarial potential of quinolinyl chalcone derivatives

The conformation about the ethene bond [1.316 (3) Å] in the title compound, C25H18BrNO, is E. The quinoline ring forms dihedral angles of 67.21 (10) and 71.68 (10)° with the benzene and bromo-substituted benzene rings, respectively. Highlighting the non-planar arrangement of aromatic rings, the dihedral angle formed between the benzene rings is 58.57 (12)°. © 2010.

(2E)-3-(4-Bromophenyl)-1-(2-methyl-4-phenyl-3-quinolyl)prop-2-en-1-one

The 1,4-dihydro-pyridine ring in the title hydrate, C17H 18BrNO2·H2O, has a flattened-boat conformation, and the benzene ring is occupies a position orthogonal to this [dihedral angle: 82.19 (16)°]. In the crystal packing, supra-molecular arrays mediated by N - H⋯Owater and Owater - H⋯Ocarbonyl hydrogen bonding are formed in the bc plane. A highly disordered solvent mol-ecule is present within a mol-ecular cavity defined by the organic and water mol-ecules. Its contribution to the electron density was removed from the observed data in the final cycles of refinement and the formula, mol-ecular weight and density are given without taking into account the contribution of the solvent mol-ecule.

1-[5-Acetyl-4-(4-bromophenyl)-2,6-dimethyl-1,4-dihydropyridin-3-yl]ethanone monohydrate

Journal of Applied Crystallography

publCIF: software for editing, validating and formatting crystallographic information files

<jats:p>An account is given of the development of the<jats:italic>SHELX</jats:italic>system of computer programs from<jats:italic>SHELX</jats:italic>-76 to the present day. In addition to identifying useful innovations that have come into general use through their implementation in<jats:italic>SHELX</jats:italic>, a critical analysis is presented of the less-successful features, missed opportunities and desirable improvements for future releases of the software. An attempt is made to understand how a program originally designed for photographic intensity data, punched cards and computers over 10000 times slower than an average modern personal computer has managed to survive for so long.<jats:italic>SHELXL</jats:italic>is the most widely used program for small-molecule refinement and<jats:italic>SHELXS</jats:italic>and<jats:italic>SHELXD</jats:italic>are often employed for structure solution despite the availability of objectively superior programs.<jats:italic>SHELXL</jats:italic>also finds a niche for the refinement of macromolecules against high-resolution or twinned data;<jats:italic>SHELXPRO</jats:italic>acts as an interface for macromolecular applications.<jats:italic>SHELXC</jats:italic>,<jats:italic>SHELXD</jats:italic>and<jats:italic>SHELXE</jats:italic>are proving useful for the experimental phasing of macromolecules, especially because they are fast and robust and so are often employed in pipelines for<jats:italic>high-throughput</jats:italic>phasing. This paper could serve as a general literature citation when one or more of the open-source<jats:italic>SHELX</jats:italic>programs (and the Bruker AXS version<jats:italic>SHELXTL</jats:italic>) are employed in the course of a crystal-structure determination.</jats:p>

Journal	Acta Crystallographica Section E Structure Reports Online
Publisher	International Union of Crystallography (IUCr)
ISSN	16005368
Open Access	No