Results 71 to 80 of about 698 (167)

Voraktivierung als Weg zur Anpassung der Kinetik Mechanochemischer Transformationen

open access: yesAngewandte Chemie, Volume 138, Issue 3, 16 January 2026.
Die Kinetik mechanochemischer Reaktionen kann durch die selektive Voraktivierung von Ausgangsreagenzien deutlich verändert werden, wie durch Reaktionsüberwachung mittels zeitaufgelöster in‐situ‐Pulver‐Röntgendiffraktometrie und ab initio‐Dichtefunktionaltheorie‐Simulation gezeigt wurde.
Christian Heinekamp   +7 more
wiley   +1 more source

Pre‐Activation as a Route for Tuning the Kinetics of Mechanochemical Transformations

open access: yesAngewandte Chemie International Edition, Volume 65, Issue 3, 16 January 2026.
The kinetics of mechanochemical reactions can be markedly altered through the selective pre‐activation of starting reagents, as revealed through reaction monitoring using time‐resolved in situ powder X‐ray diffraction and ab initio density functional theory simulation.
Christian Heinekamp   +7 more
wiley   +1 more source

Impact of Halogen Substituent Nature and Position on the Structural and Energetic Properties of Carbamazepine Cocrystals with Meta‐Halobenzoic Acids: A Two‐Pathway Synthesis Study

open access: yesChemPlusChem, Volume 90, Issue 11, November 10, 2025.
This study explores how halogen substitution in benzoic acid coformers affects the structure and stability of carbamazepine cocrystals. Isostructurality and enhanced lattice stability with heavier halogens are revealed, highlighting key supramolecular interactions.
Artur Mirocki, Mattia Lopresti
wiley   +1 more source

Synthesis of Two Novel Azilsartan Cocrystals: Preparation, Physicochemical Characterization and Solubility Studies

open access: yesCrystals, 2020
Azilsartan is a novel angiotension II receptor blocker primarily used to treat high blood pressure. This is not a formulation-friendly molecule largely due to the inherent water-solubility pitfalls.
Lei Gao, Xian-Rui Zhang
doaj   +1 more source

On the cohomology of elliptic coformal spaces

open access: yes, 2019
In this article, we pursue the study begun in \cite{Lup02} on the cohomology of rationally elliptic coformal spaces. Consequently, we complete, for such spaces, the proof of Lupton's conjecture and deduce Hilali's.
openaire   +2 more sources

Origin of phase relative stability and phase transformation in an S‐ibuprofen–nicotinamide cocrystal

open access: yesActa Crystallographica Section C, Volume 81, Issue 11, Page 658-665, November 2025.
The crystal structure of the metastable form of S‐ibuprofen–nicotinamide cocrystals was solved from powder X‐ray diffraction data and explains the main mechanisms responsible for the relative stability of the two forms of the cocrystals. This also made it possible to explain the transition mechanism between the two forms with temperature.The crystal ...
Mathieu Guerain   +7 more
wiley   +1 more source

Influence of Sodium Lauryl Sulfate and Tween 80 on Carbamazepine–Nicotinamide Cocrystal Solubility and Dissolution Behaviour

open access: yesPharmaceutics, 2013
The influence of the surfactants of sodium lauryl sulfate (SLS) and Tween 80 on carbamazepine–nicotinamide (CBZ–NIC) cocrystal solubility and dissolution behaviour has been studied in this work.
Ke Wang, Ning Qiao, Mingzhong Li
doaj   +1 more source

4-Nitrobenzoic acid–sulfathiazole (1/1)

open access: yesActa Crystallographica Section E, 2014
In the crystal structure of the title compound, C7H5NO4·C9H9N3O2S2, the sulfathiazole and 4-nitrobenzoic acid molecules are held together by short π–π contacts between the thiazole and nitrobenzene rings, with a centroid–centroid distance of 3.8226 (7) Å.
Madhavi Oruganti, Darshak R. Trivedi
doaj   +1 more source

Non-Covalent Derivatives: Cocrystals and Eutectics

open access: yesMolecules, 2015
Non-covalent derivatives (NCDs) are formed by incorporating one (or more) coformer molecule(s) into the matrix of a parent molecule via non-covalent forces.
Emily Stoler, John C. Warner
doaj   +1 more source

Piroxicam cocrystals with phenolic coformers: preparation, characterization, and dissolution properties

open access: yesPharmaceutical Development and Technology, 2018
This study explores the preparation and investigation of dissolution properties of piroxicam cocrystals. Differential scanning calorimetry (DSC) was used to determine the capability of resorcinol (RES), methylparaben (MPB), and vanillin (VAN) to form cocrystals with piroxicam (PRX). Generation of cocrystals was attempted by liquid assisted grinding and
Shahram, Emami   +3 more
openaire   +2 more sources

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