Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Rao M, Uppu"'
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 80, Iss 10, Pp 1097-1100 (2024)
The title hydrated molecular salt, C19H15N4+·Cl−·2.5H2O, has two triphenyltetrazolium cations, two chloride anions and five water molecules in the asymmetric unit. The cations differ in the conformations of the phenyl rings with respect to the he
Externí odkaz:
https://doaj.org/article/8092860e6f63483490dd4cc29d67f3d5
Publikováno v:
IUCrData, Vol 9, Iss 11, p x241126 (2024)
The title compound, C5H2Cl3NO, is almost planar. In the crystal, the molecules form centrosymmetric hydrogen-bonded dimers through pairwise O—H...N interactions to generate R22(8) loops.
Externí odkaz:
https://doaj.org/article/0722ba13c3ce4d8596825ba1967732db
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 80, Iss 7, Pp 725-728 (2024)
The oxidation of methionyl peptides can contribute to increased biological (oxidative) stress and development of various inflammatory diseases. The conformation of peptides has an important role in the mechanism of oxidation and the intermediates for
Externí odkaz:
https://doaj.org/article/0f0b408692ea4bb5a205bfed726093c2
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 80, Iss 1, Pp 58-61 (2024)
At room temperature, the title salt, C7H10NO+·Cl−, is orthorhombic, space group Pbca with Z′ = 1, as previously reported [Zhao (2009). Acta Cryst. E65, o2378]. Between 250 and 200 K, there is a solid-state phase transition to a twinned monoclini
Externí odkaz:
https://doaj.org/article/9e3e00e0589d4887b65e6b39a45cb4be
Publikováno v:
IUCrData, Vol 8, Iss 7, p x230565 (2023)
The title compound, C12H15NO3, crystallizes with Z′ = 2 in space group Pca21 with the two independent molecules having almost the same conformation, differing mostly at the end of the butanamide chain. A local inversion center near 1/8, 3/4, z rela
Externí odkaz:
https://doaj.org/article/876a226ad66240cb868d77ae84a5cbc5
Publikováno v:
IUCrData, Vol 8, Iss 6, p x230551 (2023)
The study of the oxidation of various proteins necessitates scrutiny of the amino acid sequence. Since methionine (Met) and tyrosine (Tyr) are easily oxidized, peptides that contain these amino acids are frequently studied using a variety of oxidatio
Externí odkaz:
https://doaj.org/article/b932f93d779f41fa8dbd80f4c6a6e20f
Publikováno v:
IUCrData, Vol 8, Iss 4, p x230298 (2023)
The title compound, C9H10N2O4, crystallizes with a disordered nitro group in twinned crystals. Both the methoxy group and the acetamide groups are nearly coplanar with the phenyl ring, and the C—N—C—O torsion angle [0.2 (4)°] is also insignifi
Externí odkaz:
https://doaj.org/article/f7d1499aba4d492599d4b773798eddf0
Publikováno v:
IUCrData, Vol 8, Iss 3, p x230231 (2023)
In the title compound, racemic bucetin [systematic name: N-(4-ethoxyphenyl)-3-hydroxybutanamide], C12H17NO3, the molecule is in an extended conformation as illustrated by the C—O—C—C torsion angle [170.14 (15)°] in the ethoxy group and the sub
Externí odkaz:
https://doaj.org/article/aa048eefcab34eb1b6dc6e94f0a23b00
Autor:
Rao M. Uppu, Frank R. Fronczek
Publikováno v:
IUCrData, Vol 8, Iss 1, p x221223 (2023)
The structure of the title compound, C10H6N4O2, reported by Smalley et al. [(2021). Cryst. Growth Des. 22, 524–534] from powder diffraction data and 15N NMR spectroscopy, is confirmed using low-temperature data from a twinned crystal. The tautomer
Externí odkaz:
https://doaj.org/article/966668d340254d6bbe347fd7b3b404af
Publikováno v:
IUCrData, Vol 7, Iss 2, p x220201 (2022)
The title compound, C8H8N2O4, differs in its degree of planarity from the 3-nitro isomer and also in its hydrogen-bonding pattern. Its NH group forms an intramolecular hydrogen bond to a nitro oxygen atom, and its OH group forms an intermolecular hyd
Externí odkaz:
https://doaj.org/article/ee75999545704e1f97a861e19240d21a