Results 11 to 20 of about 754,388 (280)

Molecular Gas Phase Conformational Ensembles

open access: yesJournal of Chemical Information and Modeling, 2023
Abstract. Accurately determining the global minima of a molecular structure is important in diverse scientific fields, including drug design, materials science, and chemical synthesis. Conformational search engines serve as valuable tools for exploring the extensive conformational space of molecules and identifying energetically favorable conformations.
Susanta Das, Kenneth M. Merz
openaire   +2 more sources

Reversible mechanical control of molecular conformation. [PDF]

open access: yesCommun Chem, 2020
Controlling molecular conformation through macroscopic mechanical stimulus may have applications in chiroptical devices, but achieving this in a 3D material is challenging. Now, a quantitative relationship between stretching of an elastomer and reversible conformational changes of a crosslinked molecule has been established.
Bissette AJ.
europepmc   +4 more sources

CONFORMATIONAL TRANSITIONS IN MOLECULAR SYSTEMS [PDF]

open access: yesPath Integrals — New Trends and Perspectives, 2008
Proteins are the "work horses" in biological systems. In almost all functions specific proteins are involved. They control molecular transport processes, stabilize the cell structure, enzymatically catalyze chemical reactions; others act as molecular motors in the complex machinery of molecular synthetization processes.
Bachmann, Michael, Janke, Wolfhard
openaire   +2 more sources

Theoretical Study of Some Nitrososulfamide Compounds with Antitumor Activity

open access: yesMolecules, 2004
The lowest-energy conformations of four 2-chloroethylnitrososulfamides were determined using the MM+ molecular mechanics method as implemented in Hyperchem 6.0. Some of the calculated structural parameters, angles and bonds lengths were compared with the
Madi Fatiha   +2 more
doaj   +1 more source

Structural investigation of N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide and N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]-4-methoxybenzamide

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2021
The compound N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide, C21H16FN3O3S, crystallizes in the monoclinic centrosymmetric space group P21/c and its molecular conformation is stabilized via an intramolecular N—H...O hydrogen bond.
Dhananjay Dey   +3 more
doaj   +1 more source

Identifying the protein folding nucleus using molecular dynamics [PDF]

open access: yes, 2000
Molecular dynamics simulations of folding in an off-lattice protein model reveal a nucleation scenario, in which a few well-defined contacts are formed with high probability in the transition state ensemble of conformations.
Buldyrev, Sergey V.   +3 more
core   +1 more source

Three closely related 1-[(1,3-benzodioxol-5-yl)methyl]-4-(halobenzoyl)piperazines: similar molecular structures but different intermolecular interactions

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2019
In each of the compounds 1-[(1,3-benzodioxol-5-yl)methyl]-4-(3-fluorobenzoyl)piperazine, C19H19FN2O3 (I), 1-[(1,3-benzodioxol-5-yl)methyl]-4-(2,6-difluorobenzoyl)piperazine, C19H18F2N2O3 (II), and 1-[(1,3-benzodioxol-5-yl)methyl]-4-(2,4-dichlorobenzoyl ...
Ninganayaka Mahesha   +6 more
doaj   +1 more source

Modeling of Ultrasound-Assisted Extraction, Chemical Composition, Antioxidant Activity, Rheological Aspects, and Biological Properties of “Barhang-e-Kabir” Mucilage [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2021
In this study, response surface methodology (RSM) was used to investigate the influence of independent process parameters including water to seed ratio (g/g), temperature (°C), time (min), and ultrasonic intensity (%) on the extraction yield of “Barhang ...
Behrooz Alizadeh Behbahani   +1 more
doaj   +1 more source

Molecular Actuators in Action: Electron-Transfer-Induced Conformation Transformation in Cofacially Arrayed Polyfluorenes [PDF]

open access: yes, 2018
There is much current interest in the design of molecular actuators, which undergo reversible, controlled motion in response to an external stimulus (light, heat, oxidation, etc.).
Cai, Sheng   +7 more
core   +3 more sources

Crystal structures of two C,N-disubstituted acetamides: 2-(4-chlorophenyl)-N-(2-iodophenyl)acetamide and 2-(4-chlorophenyl)-N-(pyrazin-2-yl)acetamide

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2016
In the crystal of 2-(4-chlorophenyl)-N-(2-iodophenyl)acetamide, C14H11ClINO, molecules are linked by a combination of N—H...O and C—H...O hydrogen bonds to form a C(4)C(4)[R21(7)] chain of rings and chains of this type are linked by a combination of C—Cl.
Badiadka Narayana   +3 more
doaj   +1 more source

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