Results 71 to 80 of about 580,876 (195)

Structure–property relationships in dicyanopyrazinoquinoxalines and their hydrogen-bonding-capable dihydropyrazinoquinoxalinedione derivatives

Beilstein Journal of Organic Chemistry
Presented here is the design, synthesis, and study of a variety of novel hydrogen-bonding-capable π-conjugated N-heteroacenes, 1,4-dihydropyrazino[2,3-b]quinoxaline-2,3-diones (DPQDs).
Tural N. Akhmedov, Ajeet Kumar, Daken J. Starkenburg, Kyle J. Chesney, Khalil A. Abboud, Novruz G. Akhmedov, Jiangeng Xue, Ronald K. Castellano   +7 more
doaj   +1 more source

Two mixed-ligand lanthanide–hydrazone complexes: [Pr(NCS)3(pbh)2]·H2O and [Nd(NCS)(NO3)(pbh)2(H2O)]NO3·2.33H2O [pbh is N′-(pyridin-2-ylmethylidene)benzohydrazide, C13H11N3O]

Acta Crystallographica Section E: Crystallographic Communications, 2016
The gel-mediated syntheses and crystal structures of [N′-(pyridin-2-ylmethylidene-κN)benzohydrazide-κ2N′,O]tris(thiocyanato-κN)praseodymium(III) monohydrate, [Pr(NCS)3(C13H11N3O)2]·H2O, (I), and aqua(nitrato-κ2O,O′)[N′-(pyridin-2-ylmethylidene-κN ...
Damianos G. Paschalidis, William T. A. Harrison   +1 more
doaj   +1 more source

Crystal structure of 3-C-(N-benzyloxycarbonyl)aminomethyl-3-deoxy-1,2:5,6-di-O-isopropylidene-α-d-allofuranose

Acta Crystallographica Section E: Crystallographic Communications, 2015
The title compound, C21H29NO7 (1) [systematic name: benzyl ({(3aR,5S,6R,6aR)-5-[(R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl}methyl)carbamate], consists of a substituted 2,2-dimethyltetrahydrofuro[2,3-d][1,3 ...
Vitalijs Rjabovs, Dmitrijs Stepanovs, Maris Turks   +2 more
doaj   +1 more source

Interplay between Position-Dependent Codon Usage Bias and Hydrogen Bonding at the 5ʹ End of ORFeomes

mSystems, 2020
Codon usage bias exerts control over a wide variety of molecular processes. The positioning of synonymous codons within coding sequences (CDSs) dictates protein expression by mechanisms such as local translation efficiency, mRNA Gibbs free energy, and ...
Juan C. Villada, Maria F. Duran, Patrick K. H. Lee   +2 more
doaj   +1 more source

Crystal structure of tetra-μ-acetato-bis[(5-amino-2-methylsulfanyl-1,3,4-thiadiazole-κN1)copper(II)]

Acta Crystallographica Section E: Crystallographic Communications, 2019
The reaction of 2-methylthio-5-amino-1,3,4-thiadiazole (Me-SNTD; C3H5N3S2) with copper(II) acetate monohydrate [Cu(OAc)2·H2O; C4H8CuO5] resulted in the formation of the title binuclear compound, [Cu2(C2H3O2)4(C3H5N3S2)2] or [Cu2(OAc)4(Me-SNTD)2].
Batirbay Torambetov, Shaxnoza Kadirova, Turdibek Toshmurodov, Jamshid Mengnorovich Ashurov, Nusrat Agzamovich Parpiev, Abdukhakim Ziyaev   +5 more
doaj   +1 more source

Crystal structure of 1,4-bis(3-ammoniopropyl)piperazine-1,4-diium bis[dichromate(VI)]

Acta Crystallographica Section E: Crystallographic Communications, 2016
The asymmetric unit of the organic–inorganic title salt, (C10H28N4)[Cr2O7]2, comprises one half of an 1,4-bis(3-ammoniopropyl)piperazinediium cation (the other half being generated by the application of inversion symmetry) and a dichromate anion.
S. Vetrivel, E. Vinoth, R. U. Mullai, R. Aruljothi, M. NizamMohideen   +4 more
doaj   +1 more source

Mechanistic insights of the controlled release capacity of polar functional group in transdermal drug delivery system: the relationship of hydrogen bonding strength and controlled release capacity

Acta Pharmaceutica Sinica B, 2020
Background: Hydrogen bonding interaction was considered to play a critical role in controlling drug release from transdermal patch. However, the quantitative evaluation of hydrogen bonding strength between drug and polar functional group was rarely ...
Zheng Luo, Chao Liu, Peng Quan, Degong Yang, Hanqing Zhao, Xiaocao Wan, Liang Fang   +6 more
doaj   +1 more source

Hydrogen Bonding in Amorphous Indomethacin

Pharmaceutics
Amorphous Indomethacin has enhanced bioavailability over its crystalline forms, yet amorphous forms can still possess a wide variety of structures. Here, Empirical Potential Structure Refinement (EPSR) has been used to provide accurate molecular models ...
C. J. Benmore, J. L. Yarger, S. K. Davidowski, C. D. Shrader, P. A. Smith, S. R. Byrn   +5 more
doaj   +1 more source

N-(Phenylsulfonyl)-l-asparagine

Acta Crystallographica Section E, 2009
In the title compound, C10H12N2O5S, one of the sulfonyl O atoms is hydrogen bonded to the amido N atom of an adjacent molecule. There is also a weak hydrogen-bonding interaction between the other sulfonyl O atom and the secondary amino N atom.
Muhammad Shafiq, Islam Ullah Khan, Hafiz Mubashar-ur-Rehman, Muhammad Nadeem Arshad, Kong Mun Lo   +4 more
doaj   +1 more source

Crystal structure of catena-poly[[[tetraaquacobalt(II)]-μ2-1,5-dihydroxynaphthalene-2,6-dicarboxylato] dimethylformamide disolvate]

Acta Crystallographica Section E: Crystallographic Communications
The asymmetric unit of the title compound, {[Co(C12H6O6)(H2O)4]·2C3H7NO}n or {[Co(H2dondc)(H2O)4]·2DMF}n, comprises half of a CoII ion, half of a 1,5-dihydroxynaphthalene-2,6-dicarboxylate dianion (H2dondc2−), two water molecules and a dimethylformamide (
Hitoshi Kumagai, Satoshi Kawata, Nobuhiro Ogihara   +2 more
doaj   +1 more source