Results 31 to 40 of about 2,002,951 (308)

2-Amino-4-methylpyrimidinium dihydrogen phosphate

open access: yesActa Crystallographica Section E, 2013
A charge-assisted hydrogen-bonding network involving N—H...O and O—H...O hydrogen bonds stabilizes the crystal of the title salt, C5H8N3+·H2PO4−.
Sajesh P. Thomas, Jyothi Sunkari
doaj   +1 more source

Bis(dimethylammonium) 3,3′-dicarboxy-5,5′-(5,7,12,14-tetraoxo-6,13-diazatetracyclo[6.6.2.04,16.011,15]hexadeca-1,3,8,10,15-pentaene-6,13-diyl)dibenzoate dihydrate

open access: yesActa Crystallographica Section E, 2012
The title compound, 2C2H8N+·C30H12N2O122−·2H2O, comprises dimethylammonium cations, 3,3′-dicarboxy-5,5′-(5,7,12,14-tetraoxo-6,13-diazatetracyclo[6.6.2.04,16.011,15]hexadeca-1,3,8,10,15-pentaene-6,13-diyl ...
Lan-Ping Xu, Lan Qin, Lei Han
doaj   +1 more source

Crystal structure of tris(piperidinium) hydrogen sulfate sulfate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title molecular salt, 3C5H12N+·HSO4−·SO42−, each cation adopts a chair conformation. In the crystal, the hydrogen sulfate ion is connected to the sulfate ion by a strong O—H...O hydrogen bond. The packing also features a number of N—H...O hydrogen
Tamara J. Lukianova   +2 more
doaj   +1 more source

Ethyl 2-(2,5-dioxo-4,4-diphenylimidazolidin-1-yl)acetate

open access: yesIUCrData, 2017
The five-membered ring of the title compound, C19H18N2O4, adopts an envelope conformation. In the crystal, pairwise N—H...O hydrogen bonds form centrosymmetric dimers which are connected into chains parallel to the c-axis direction by pairwise C—H...O ...
Youssef Ramli   +5 more
doaj   +1 more source

Syntheses and crystal structures of 2,2,5-trimethyl-1,3-dioxane-5-carboxylic acid and 2,2,5-trimethyl-1,3-dioxane-5-carboxylic anhydride

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
In 2,2,5-trimethyl-1,3-dioxane-5-carboxylic acid, C8H14O4, the carboxyl group occupies an equatorial position on the 1,3-dioxane ring. In the crystal, O—H...O hydrogen bonds form chains of molecules, which are linked into a three-dimensional network by C—
Joseph A. Giesen   +2 more
doaj   +1 more source

Effect of Hydrogen Bonds on the Dielectric Properties of Interfacial Water.

open access: yesLangmuir, 2019
The dielectric constant for water is reduced under confinement. Although this phenomenon is well known, the underlying physical mechanism for the reduction is still in debate.
Sleeba Varghese   +3 more
semanticscholar   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

open access: yesFEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source

Ethyl 4-(4-hydroxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate monohydrate

open access: yesActa Crystallographica Section E, 2008
There are three formula units in the asymmetric unit of the title compound, C14H16N2O4·H2O. Molecules are linked by N—H...O hydrogen bonds into dimers with the common R22(8) graph-set motif.
T. N. Guru Row   +4 more
doaj   +1 more source

Single cis‐elements in brassinosteroid‐induced upregulated genes are insufficient to recruit both redox states of the BIL1/BZR1 DNA‐binding domain

open access: yesFEBS Letters, EarlyView.
Phytohormone brassinosteroid‐induced gene regulation by the transcription factor BIL1/BZR1 involves redox‐dependent DNA‐binding alternation and interaction with the transcription factor PIF4. The reduced BIL1/BZR1 dimer binds preferred cis‐elements, while oxidation alters its oligomerization state and disrupts DNA‐binding ability.
Shohei Nosaki   +4 more
wiley   +1 more source

Raman Spectroscopy for the Competition of Hydrogen Bonds in Ternary (H2O–THF–DMSO) Aqueous Solutions

open access: yesMolecules, 2019
The effects of hydrogen bonds on the molecular structure of water-tetrahydrofuran (H2O−THF), water-dimethyl sulfoxide (H2O−DMSO), and water-tetrahydrofuran-dimethyl sulfoxide (H2O−THF−DMSO) in binary aqueous solutions and ternary ...
Shiliang Liu   +4 more
doaj   +1 more source

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