scholarly journals Crystal structure of 3,7-dimethyl-1-(5-oxohexyl)-3,7-dihydro-1H-purine-2,6-dione 4-hydroxybenzoic acid, C20H24N4O6

2020 ◽  
Vol 235 (3) ◽  
pp. 599-600
Author(s):  
Peizhe Li ◽  
Lei Liu ◽  
Benyong Lou ◽  
Hongbing Zhan
Keyword(s):  
Crystal Structure ◽  
Hydroxybenzoic Acid

AbstractC20H24N4O6, triclinic, P1̄ (no. 2), a = 8.2441(5) Å, b = 11.6409(6) Å, c = 12.0107(9) Å, α = 64.328(6)°, β = 70.778(6)°, γ = 86.678(4)°, V = 976.09(12) Å3, Z = 2, Rgt(F) = 0.0671, wRref(F2) = 0.1702, T = 100 K.

Uranium(VI) complex with m-hydroxybenzoic acid. Synthesis, crystal structure, and spectral properties

2014 ◽  
Vol 56 (2) ◽  
pp. 145-149 ◽  
Author(s):  
A. A. Levtsova ◽  
G. B. Andreev ◽  
N. A. Budantseva ◽  
I. G. Tananaev ◽  
B. F. Myasoedov
Keyword(s):  
Crystal Structure ◽  
Spectral Properties ◽  
Acid Synthesis ◽  
Hydroxybenzoic Acid

Synthesis, crystal structure, and spectral properties of a complex of U(VI) with m-hydroxybenzoic acid

2010 ◽  
Vol 52 (4) ◽  
pp. 354-357 ◽  
Author(s):  
A. A. Levtsova ◽  
G. B. Andreev ◽  
N. A. Budantseva ◽  
I. G. Tananaev ◽  
B. F. Myasoedov
Keyword(s):  
Crystal Structure ◽  
Spectral Properties ◽  
Hydroxybenzoic Acid

scholarly journals Crystal structure of 4-(3-carboxypropanamido)-2-hydroxybenzoic acid monohydrate

2014 ◽  
Vol 70 (12) ◽  
pp. o1254-o1255 ◽  
Author(s):  
Muhammad Nawaz Tahir ◽  
Muhammad Naeem Ahmed ◽  
Arshad Farooq Butt ◽  
Hazoor Ahmad Shad
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bond ◽  
Carboxylic Acid ◽  
Water Molecule ◽  
Organic Molecule ◽  
Three Dimensional ◽  
Acid Group ◽  
The Other ◽  
Hydroxybenzoic Acid ◽  
Dimensional Network

In the title hydrate, C11H11NO6·H2O, the organic molecule is approximately planar (r.m.s. deviation for the non-H atoms = 0.129 Å) and an intramolecular O—H...O hydrogen bond closes anS(6) ring. In the crystal, the benzoic acid group participates in an O—H...O hydrogen bond to the water molecule and accepts a similar bond from another water molecule. The other –CO2H group forms a carboxylic acid inversion dimer, thereby forming anR22(8) loop. These bonds, along with N—H...O and C—H...O interactions, generate a three-dimensional network.

scholarly journals Crystal structure of 3-bromo-2-hydroxybenzoic acid

2015 ◽  
Vol 71 (5) ◽  
pp. 531-535 ◽  
Author(s):  
Gerhard Laus ◽  
Volker Kahlenberg ◽  
Thomas Gelbrich ◽  
Sven Nerdinger ◽  
Herwig Schottenberger
Keyword(s):  
Crystal Structure ◽  
Salicylic Acid ◽  
Hydrogen Bonds ◽  
Crystal Structures ◽  
Title Compound ◽  
Hydroxybenzoic Acid ◽  
Compound C ◽  
Derivatives Of ◽  
Centrosymmetric Dimers ◽  
Ring Motif

Mutual carboxyl–carboxyl O—H...O hydrogen bonds link the molecules of the title compound, C7H5BrO3, into centrosymmetric dimers which display a centralR22(8) ring motif. In addition, there is an intramolecular hydroxyl–carboxyl O—H...O interaction present. A comparison with the crystal structures of 59 other substituted derivatives of salicylic acid shows that both the centrosymmetric carboxyl–carboxyl O—H...O dimer and the stacking mode of molecules along the shortaaxis observed in the title structure are frequent packing motifs in this set.

scholarly journals Extension of resolution and oligomerization-state studies of 2,4′-dihydroxyacetophenone dioxygenase fromAlcaligenessp. 4HAP

2015 ◽  
Vol 71 (10) ◽  
pp. 1258-1263 ◽  
Author(s):  
J. Guo ◽  
P. Erskine ◽  
A. R. Coker ◽  
J. Gor ◽  
S. J. Perkins ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Molecular Weight ◽  
Formic Acid ◽  
Analytical Ultracentrifugation ◽  
Ralstonia Eutropha ◽  
Gel Filtration ◽  
Apparent Molecular Weight ◽  
Structural Basis ◽  
Hydroxybenzoic Acid ◽  
Tetrameric Structure

The enzyme 2,4′-dihydroxyacetophenone dioxygenase (DAD) catalyses the conversion of 2,4′-dihydroxyacetophenone to 4-hydroxybenzoic acid and formic acid. This enzyme is a very unusual dioxygenase in that it cleaves a C—C bond in a substituent of the aromatic ring rather than within the ring itself. Whilst it has been shown that DAD is a tetramer in solution, the recently solved crystal structure of theAlcaligenessp. 4HAP enzyme was in fact dimeric rather than tetrameric. Since the use of limited chymotrypsinolysis, which apparently results in removal of the first 20 or so N-terminal residues of DAD, was necessary for crystallization of the protein, it was investigated whether this was responsible for the change in its oligomerization state. Gel-filtration and analytical ultracentrifugation studies were conducted, which confirmed that chymotrypsinolysed DAD has an apparent molecular weight of around 40 kDa, corresponding to a dimer. In contrast, the native enzyme has a molecular weight in the 70–80 kDa region, as expected for the tetramer. The structural basis for tetramerization has been investigated by the use of several docking servers, and the results are remarkably consistent with the tetrameric structure of a homologous cupin protein fromRalstonia eutropha(PDB entry 3ebr).

scholarly journals The crystal structure of the co-crystal: 2-hydroxybenzoic acid – N′-(butan-2-ylidene)pyridine-4-carbohydrazide, C10H13N3O·C7H6O3

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Itumeleng B. Setshedi ◽  
Mark G. Smith
Keyword(s):  
Crystal Structure ◽  
Hydroxybenzoic Acid

Abstract C10H13N3O·C7H6O3, monoclinic, P21/n (no. 14), a = 7.4038(9) Å, b = 30.448(3) Å, c = 7.6744(8) Å, β = 112.013(3)°, V = 1603.9(3) Å3, Z = 4, R gt (F) = 0.0492, wR ref (F 2) = 0.1384, T = 173 K.

scholarly journals Crystal structure of 3-acetyl-4-hydroxybenzoic acid, C18H16O8

2020 ◽  
Vol 235 (4) ◽  
pp. 807-809
Author(s):  
Jia Gu ◽  
Cui-Xin Huang ◽  
Yan-Ling Zheng ◽  
Xu-Liang Nie ◽  
Jin-Zhu Chen
Keyword(s):  
Crystal Structure ◽  
Hydroxybenzoic Acid

AbstractC18H16O8, monoclinic, P21/c (no. 14), a = 5.3210(8) Å, b = 5.1825(8) Å, c = 29.598(5) Å, β = 93.875(2)°, V = 814.3(2) Å3, Z = 2, Rgt(F) = 0.0340, wRref(F2) = 0.1011, T = 296(2) K.

scholarly journals 2,5-Dimethylanilinium 4-hydroxybenzoate–2,5-dimethylaniline–4-hydroxybenzoic acid (1/1/1)

IUCrData ◽  
2016 ◽  
Vol 1 (10) ◽  
Author(s):  
A. Mani ◽  
K. Rajesh ◽  
P. Praveen Kumar ◽  
G. Chakkaravarthi
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Three Dimensional ◽  
Hydroxybenzoic Acid ◽  
Asymmetric Unit ◽  
Π Interactions ◽  
Compound C ◽  
Dimensional Network

The asymmetric unit of the title compound, C8H12N+·C7H5O3 −·C8H11N·C7H6O3, contains a 2,5-dimethylanilinium cation, 4-hydroxybenzoate anion and neutral 2,5-dimethylaniline and 4-hydroxybenzoic acid molecules. The components are connected by N—H...O, O—H...O and N—H...N hydrogen bonds, which generate R 2 2(8), R 4 4(20) and R 4 4(24) loops, as part of a three-dimensional network. The crystal structure also features weak C—H...π interactions.

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