Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Obinna C. Okpareke"'
Autor:
Kenechukwu J. Ifeanyieze, Bikimi B. Ayiya, Obinna C. Okpareke, Tatiana V. Groutso, Jonnie N. Asegbeloyin
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 78, Iss 4, Pp 439-444 (2022)
The title compound, C18H14N2O3S, crystallizes in the orthorhombic crystal system and Pbca space group. The thiourea chromophore is planar to an r.m.s deviation of 0.032 Å with the thiolate sulfur atom being the most deviated. Bifurcated N—H...O in
Externí odkaz:
https://doaj.org/article/95b855347b1a4a719b7dc70aa79b6408
Autor:
Jonnie N. Asegbeloyin, Kenechukwu J. Ifeanyieze, Obinna C. Okpareke, Ebube E. Oyeka, Tatiana V. Groutso
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 9, Pp 1297-1300 (2019)
In the title dithioglycoluril derivative, C19H20N4O3S2, there is a difference in the torsion angles between the thioimidazole moiety and the methoxyphenyl groups on either side of the molecule [C—N—Car—Car = 116.9 (2) and −86.1 (3)°, respect
Externí odkaz:
https://doaj.org/article/ff8403e73d9344a8a798c3a757cc8d4f
Publikováno v:
Molbank, Vol 2019, Iss 3, p M1069 (2019)
The title compound, [dicyclohexyl(sulfanylidene)-λ5-phosphanyl]methanol, Cy2P(=S)CH2OH (1), was obtained from the reaction between [Cy2P(CH2OH)2]Cl with one molar equivalent of NaOH and an excess of elemental sulfur (powdered). Characterization was
Externí odkaz:
https://doaj.org/article/8ed15847c61d42d6bd29b9681c948158
Autor:
Pius O. Ukoha, Simeon Atiga, Oguejiofo T. Ujam, Jonnie N. Asegbeloyin, Obinna C. Okpareke, Solomon O. E. Okereke
Publikováno v:
Croatica Chemica Acta, Vol 88, Iss 3, Pp 259-266 (2015)
Redox kinetics of the reaction of an adipato bridged iron(III)-salen complex, [(Fe(salen))2adi] with dithionite ion, S2O42–, was investigated in perchloric acid at I = 0.05 mol dm–3 (NaClO4) and T = 29 ± 1 °C. Spectrophotometric titrations indi
Externí odkaz:
https://doaj.org/article/eca5b038b2ee494eb2c5f86b6e61fe5e
Autor:
Akachukwu Ibezim, Obinna C. Okpareke, David Chukwuma Izuogu, Ifeyinwa Stella Ozochukwu, Jonnie N. Asegbeloyin, Oguejiofo T. Ujam
Publikováno v:
European Journal of Chemistry. 12:256-264
A new Schiff base, N'-(pyridin-3-ylmethylene)benzenesulfonohydrazide, was synthesized and characterized by elemental analysis, IR, Mass, 1H NMR and 13C NMR spectroscopy, and single-crystal X-ray determination. The asymmetric molecule crystallized in
Publikováno v:
Journal of Chemical Crystallography. 52:174-184
The synthesis, structure, and spectroscopic characterization of a pincer-type compound; N,N′-di(pyridine-4-yl)-pyridine-3,5-dicarboxamide is described. The tricationic pro-ligand (C20H22N5O2)3+ bearing two pendant alkylated 4-pyridyl arms at the 3,
A series of alkyl-bridged bisthiourea ligands and their group 10 complexes, of the types [Pt-2{(SC(NPh)NHC6H4)(2)CH2}(PPh3)(4)]center dot 2BPh(4), [M-2{(SC(NPh)NHC6H4)(2)CH2}(dppe)(2)]center dot 2BPh(4) (M = Pd, Ni), [Pt-2{SC(NPh)NH}(2)(CH2)n(PPh3)(4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc0e7e6147edd0b5e3acccd360242c75
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/96909
http://acikerisim.sdu.edu.tr/xmlui/handle/123456789/96909
Autor:
Kenechukwu J. Ifeanyieze, Bikimi B. Ayiya, Obinna C. Okpareke, Tatiana V. Groutso, Jonnie N. Asegbeloyin
Publikováno v:
Acta crystallographica. Section E, Crystallographic communications. 78(Pt 4)
The title compound, C18H14N2O3S, crystallizes in the orthorhombic crystal system and Pbca space group. The thiourea chromophore is planar to an r.m.s deviation of 0.032 Å with the thiolate sulfur atom being the most deviated. Bifurcated N—H...O in
Autor:
Ebube E. Oyeka, Jonnie N. Asegbeloyin, Obinna C. Okpareke, Tatiana.V. Groutso, Kenechukwu J. Ifeanyieze
Publikováno v:
Acta Crystallographica Section E: Crystallographic Communications
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 9, Pp 1297-1300 (2019)
Acta Crystallographica Section E: Crystallographic Communications, Vol 75, Iss 9, Pp 1297-1300 (2019)
In the title dithioglycoluril derivative, there is a difference in the torsion angles between the thioimidazole moiety and the methoxyphenyl groups on either side of the molecule [C—N—Car—Car = 116.9 (2) and −86.1 (3)°]. The N—
Publikováno v:
Inorganica Chimica Acta. 490:104-111
This work investigates the synthesis and structural properties of a hydrogen-bonded salt of the [Hg(SC6H4-2-CO2)2]2− ion. The known bis(thiosalicylato)mercury(II) complex [Hg(SC6H4-2-CO2H)2], dissolves in pyridine (py), from which the crystalline p