Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Alexander A. Nazarenko"'
Publikováno v:
Materials, Vol 17, Iss 18, p 4455 (2024)
By using the method of high-temperature solid-phase reaction, the new piezoceramic SrBi2Nb2-2xWxSnxO9 was obtained, where partial substitution of niobium (Nb) atoms with Sn4+ and W6+ atoms in the compound SrBi2Nb2O9 occurred in the octahedra of the p
Externí odkaz:
https://doaj.org/article/0f65fa5811aa4d90947b03368a7a4acb
Autor:
Nikita A. Boldyrev, Eugene I. Sitalo, Lidia A. Shilkina, Alexander V. Nazarenko, Andrei D. Ushakov, Vladimir Y. Shur, Larisa A. Reznichenko, Ekaterina V. Glazunova
Publikováno v:
Ceramics, Vol 6, Iss 3, Pp 1735-1748 (2023)
Ceramics of the quasi-binary concentration section (0.1 ≤ x ≤ 0.2, Δx = 0.025) of the ternary solid solution system (0.5 − x)BiFeO3-0.5PbFe0.5Nb0.5O3-xPbTiO3 were prepared by the conventional solid-phase reaction method. An X-ray study at diff
Externí odkaz:
https://doaj.org/article/b01534955f1948618ac94be432b0b2bd
Publikováno v:
IUCrData, Vol 5, Iss 2, p x200257 (2020)
In the title compound [systematic name: 5-methyl-1,3-bis(2-oxopropyl)pyrimidine-2,4(1H,3H)-dione], C11H14N2O4, the two 2-oxopropyl groups are nearly perpendicular to the planar thymine unit. One methyl group of oxopropyl substituent is disordered. In
Externí odkaz:
https://doaj.org/article/4fd5b01bb5bf4a249b1b73808f0f21c1
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 74, Iss 9, Pp 1373-1379 (2018)
The asymmetric unit of the title compound {systematic name: 3-[(tert-butyldiphenylsilyl)oxy]propane-1,2-diol, C19H26O3Si}, contains eight chiral molecules (Z′ = 8). These molecules are connected via a complex system of hydrogen bonds into an infini
Externí odkaz:
https://doaj.org/article/ef577204728b44fdb8419a0aefa93ae3
Autor:
Alexander Y Nazarenko
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 74, Iss 6, Pp 829-834 (2018)
3-(1,1,1-Trimethylhydrazin-1-ium-2-yl)propanoate (C6H14N2O2, M, more commonly known under its commercial names Meldonium or Mildronate) co-crystalizes with sodium bromide and sodium iodide forming polymeric hydrates poly[[tetra-μ-aqua-diaquabis[3-(1
Externí odkaz:
https://doaj.org/article/3750932d47e74c09bc28e71d1461f2b4
Autor:
Alexander Y. Nazarenko
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 74, Iss 5, Pp 698-702 (2018)
Both strontium and barium acesulfames, namely poly[aquabis(μ3-6-methyl-2,2-dioxo-1,2λ6,3-oxathiazin-4-olato)strontium(II)], [Sr(C4H4NO4S)2(H2O)]n, and the barium(II) analogue, [Ba(C4H4NO4S)2(H2O)]n, crystallize in nearly identical isotypic forms, w
Externí odkaz:
https://doaj.org/article/695366f78ce149d4b4df3cb354fbfe1f
Crystal structure of naltrexone chloride solvates with ethanol, propan-2-ol, and 2-methylpropan-2-ol
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 73, Iss 7, Pp 1013-1020 (2017)
Naltrexone [systematic name: 17-(cyclopropylmethyl)-3,14-dihydroxy-4,5α-epoxymorphinan-6-one] is an opioid receptor competitive antagonist that has been widely used to prevent relapse in opioid- and alcohol-dependent subjects. Its chloride salt form
Externí odkaz:
https://doaj.org/article/ce57a569aaa947c580305cc35d791337
Autor:
Eric Gauchat, Alexander Y. Nazarenko
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 73, Iss 1, Pp 63-67 (2017)
(9S,13S,14S)-3-Methoxy-17-methylmorphinan (dextromethorphan) forms two isostructural salts with (a) tetrachloridocobaltate, namely bis[(9S,13S,14S)-3-methoxy-17-methylmorphinanium] tetrachloridocobaltate, (C18H26NO)2[CoCl4], and (b) tetrachloridocupr
Externí odkaz:
https://doaj.org/article/3b3f0b94f49d49aea9adf2b38b495393
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 72, Iss 9, Pp 1285-1289 (2016)
Two polymorphs of the title compound, C10H9BO2, were prepared by recystallization from different solvents at room temperature. Both forms demonstrate nearly identical molecular structures with all naphthalene group atoms located in one plane and all
Externí odkaz:
https://doaj.org/article/254a1e0fb54344cb80441071d8da63d3
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 72, Iss 7, Pp 947-950 (2016)
In the title compound, C34H28O4, the cyclohexadiene ring has a screw-boat conformation with a torsion angle between the double bonds being on average ca 15° [15.2 (3) and −15.3 (3) in the two independent molecules]. All four phenyl rings in both m
Externí odkaz:
https://doaj.org/article/c7ebc028e6e04cf18ff9d9e0215fa4cd