Extraction of Mn(II) Ions from Sulphate Solution by 1-Phenyl- 3-Methyl-4-Butyryl-Pyrazolone-5: Influence of pH, Sulphate Concentration, and Additional Complexing Agents

Autor: J. O. Onwuatu, V. C. Ekeka, C. Ayozie, B. A. Uzoukwu

Publikováno v: Solvent Extraction and Ion Exchange. 30:480-489

The effect of sulphate ions in a buffered medium on the extraction of manganese(II) (Mn(II)) into 1-phenyl-3-methyl-4-butyryl-pyrazolone-5 (HBuP) in chloroform and benzene solutions has been studied. It showed that extraction at lower pH values is mo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40b95a6ec30b632f772ede8547d4e950
https://doi.org/10.1080/07366299.2011.639257

Crystal structure of 1-(4-propanoyl-2,4-dihydro-5-methyl-2-phenyl-3H- pyrazol-3-oneimine) 2-aminobenzene, C19H20N4O, and of 1-(4-butanoyl- 2,4-dihydro-5-methyl-2-phenyI-3H-pyrazol-3-oneimine) 2-aminobenzene, C20H22N4O

Autor: Otto Rademacher, B. A. Uzoukwu, Karsten Gloe, H . Duddeck

Publikováno v: Zeitschrift für Kristallographie-New Crystal Structures, Vol 216, Iss 1-4, Pp 261-264 (2001)
Zeitschrift für Kristallographie-New Crystal Structures 216 (2001)

[no abstract]

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb134bc1086b1a72e7fd9553badf903c
https://doi.org/10.1524/ncrs.2001.216.14.261

Metal(II) Complexes of 4-Acylbis(Pyrazolone-5): Synthesis and Spectroscopic Studies

Autor: Karsten Gloe, B. A. Uzoukwu, H. Duddeck

Publikováno v: Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 28:207-221

The synthesis of metal(II) complexes of 4-adipoyl and 4-sebacoyl derivatives of bis(1-phenyl-3-methylpyrazolone-5) with Ni2+, Cu2+, Zn2+, Pb2+, Co2+, Mn2+, and Ca2+ has been carried out. Characterisation was by elemental analysis, W, IR and NMR spect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eb78356807be9b392dd0dce964a240de
https://doi.org/10.1080/00945719809351899

Crystal structure of N,N'-ethylenbis(4-propanoyl-2,4-dihydro-5-methyl- 2-phenyl-3H-pyrazol-3-oneimine), C28H32N6O2

Autor: B. A. Uzoukwu, Karsten Gloe, H . Duddeck, Otto Rademacher

Publikováno v: Zeitschrift für Kristallographie-New Crystal Structures, Vol 216, Iss 1-4, Pp 151-152 (2001)
Zeitschrift für Kristallographie-New Crystal Structures 216 (2001)

[no abstract]

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62e43f36278e668dbd1d661c0b282f4e
https://doaj.org/article/8ad520a6726641288ea1525e447b74ea