Results 1 to 10 of about 3,703 (215)

Supramolecular synthon hierarchy in sulfonamide cocrystals with syn-amides and N-oxides [PDF]

open access: yesIUCrJ, 2019
Sulfonamide drugs are well known antibacterial and antimicrobial molecules for pharmaceutical development. Building a library of suitable supramolecular synthons for the sulfonamide functional group and understanding their crystal structures with partner
Geetha Bolla, Ashwini Nangia
doaj   +2 more sources

Supramolecular Synthon Identification in Azelaic Acid – Isonicotinamide

open access: yesJournal of Magnetic Resonance Open, 2022
Supramolecular synthons are the smallest structural units that contain the information inherent in building large molecular assemblies. Here, we apply solid-state NMR methods for the identification of the synthon in a cocrystal of Azelaic acid [(CH2)7 ...
Jayasubba Reddy Yarava   +4 more
doaj   +2 more sources

Assessment of Computational Tools for Predicting Supramolecular Synthons [PDF]

open access: yesChemistry, 2021
The ability to predict the most likely supramolecular synthons in a crystalline solid is a valuable starting point for subsequently predicting the full crystal structure of a molecule with multiple competing molecular recognition sites.
Bhupinder Sandhu   +4 more
doaj   +2 more sources

The interplay between hydrogen bonds and stacking/T-type interactions in molecular cocrystals [PDF]

open access: yesCommunications Chemistry
Supramolecular synthon and hydrogen bond pairing approaches have influenced the understanding of cocrystal formation for decades, but are hydrogen bonds really the dominant interaction in cocrystals?
Aurora J. Cruz-Cabeza   +2 more
doaj   +2 more sources

A new monoclinic polymorph of N-(3-methylphenyl) ethoxycarbothioamide: Crystal structure and Hirshfeld surface analysis [PDF]

open access: yes, 2017
The title compound, C10H13NOS, is a second monoclinic polymorph (space group P21/c, Z′ = 2) of the previously reported C2/c (Z = 1) polymorph [Tadbuppa & Tiekink (2005). Z. Kristallogr. New Cryst. Struct. 220, 395–396].
Mukesh M,   +2 more
core   +14 more sources

Two Crystal Forms of 4′-Methyl-2,4-dinitrodiphenylamine: Polymorphism Governed by Conformational Flexibility of a Supramolecular Synthon

open access: yesCrystals, 2023
Single crystals of two polymorphic forms of 4′-methyl-2,4-dinitrodiphenylamine were obtained by crystallization and characterized by X-ray diffraction analysis.
Ivan V. Fedyanin, Aida I. Samigullina
doaj   +1 more source

Crystals at a Carrefour on the Way through the Phase Space: A Middle Path

open access: yesMolecules, 2021
Multiple supramolecular functionalities of cyclic α-alkoxy tellurium-trihalides (including Te---O, Te---X (X = Br, I) and Te---π(C=C) supramolecular synthons) afford rich crystal packing possibilities, which consequently results in polymorphism or Z’ > 1
Yury V. Torubaev, Ivan V. Skabitsky
doaj   +1 more source

Cocrystal of 4-Nitrophenol and 2,1,3-Benzoselenadizole

open access: yesMolbank, 2023
The 1:1 cocrystal of 4-nitrophenol (NP) and 2,1,3-benzoselenadiazole (BSA) was successfully synthesized. The X-ray single-crystal diffraction analysis revealed that the structure contained a [Se–N]2 cyclic supramolecular synthon.
Honghong Lan, Shaobin Miao, Weizhou Wang
doaj   +1 more source

Long-Range Supramolecular Synthon Isomerism: Insight from a Case Study of Vinylic Tellurium Trihalides Cl(Ph)C=C(Ph)TeX3 (X = Cl, I)

open access: yesChemistry, 2022
A slight modification of the synthetic procedure resulted in a new (Cc) polymorph of vinylic tellurium-trichloride Z-Cl(Ph)C=C(Ph)TeCl3 (1, β-form) which is stabilized by Te⋯Cl chalcogen bonds, assembling its molecules into the zigzag chains.
Yury V. Torubaev, Aida S. Samigullina
doaj   +1 more source

Modularity and three-dimensional isostructurality of novel synthons in sulfonamide–lactam cocrystals

open access: yesIUCrJ, 2015
The design of novel supramolecular synthons for functional groups relevant to drugs is an essential prerequisite for applying crystal engineering in the development of novel pharmaceutical cocrystals.
Geetha Bolla   +2 more
doaj   +1 more source

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