Results 11 to 20 of about 3,671 (216)
IUCrJ, 2014 Polymorphism in the orcinol:4,4′-bipyridine cocrystal system is analyzed in terms of a robust convergent modular phenol...pyridine supramolecular synthon.
Ritesh Dubey +3 more
doaj +3 more sources
IUCrJ, 2016 A synthetic strategy is outlined whereby a binary cocrystal may be developed in turn into a ternary and finally into a quaternary cocrystal. The strategy hinges on the concept of the long-range synthon Aufbau module (LSAM) which is a large supramolecular
Ritesh Dubey +2 more
doaj +3 more sources
Dual-State Photophysical Modulation via Bifurcated Hydrogen Bonding in a U-Shaped Dipyridophenazine-Cored Donor-π-Acceptor-π-Donor Fluorophore. [PDF]
ChemistryA donor–π–acceptor–π–donor (D–π–A–π–D) fluorophore bearing a U‐shaped dipyridophenazine core forms bifurcated hydrogen bonds with neutral donors such as sulfonamides or water. This interaction modulates both ground and excited states, enabling red‐shifted emission and enhanced photoluminescence in solution and solid state.
Takei K +7 more
europepmc +2 more sources
Supramolecular Synthons in Protein-Ligand Frameworks. [PDF]
Cryst Growth DesSupramolecular synthons, defined as reproducible intermolecular structural units, have greatly aided small molecule crystal engineering. In this paper, we propose that supramolecular synthons guide ligand-mediated protein crystallization. The protein RSL and the macrocycle sulfonato-calix[8]arene cocrystallize in at least four ways.
Flood RJ +4 more
europepmc +3 more sources
A new monoclinic polymorph of N-(3-methylphenyl) ethoxycarbothioamide: Crystal structure and Hirshfeld surface analysis [PDF]
, 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 +11 more sources
Crystals, 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
Molecules, 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
Molbank, 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
Chemistry, 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
IUCrJ, 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