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Stability of the complexes of some lanthanides with coumarin derivatives. II. Neodymium(III)-acenocoumarol

IRENA P. KOSTOVA
ILIA MANOLOV
MARITZA K. RADULOVA

Puni tekst: engleski, pdf (172 KB) str. 119-131 preuzimanja: 710* citiraj
APA 6th Edition
KOSTOVA, I.P., MANOLOV, I. i RADULOVA, M.K. (2004). Stability of the complexes of some lanthanides with coumarin derivatives. II. Neodymium(III)-acenocoumarol. Acta Pharmaceutica, 54 (2), 119-131. Preuzeto s https://hrcak.srce.hr/16819
MLA 8th Edition
KOSTOVA, IRENA P., et al. "Stability of the complexes of some lanthanides with coumarin derivatives. II. Neodymium(III)-acenocoumarol." Acta Pharmaceutica, vol. 54, br. 2, 2004, str. 119-131. https://hrcak.srce.hr/16819. Citirano 27.06.2019.
Chicago 17th Edition
KOSTOVA, IRENA P., ILIA MANOLOV i MARITZA K. RADULOVA. "Stability of the complexes of some lanthanides with coumarin derivatives. II. Neodymium(III)-acenocoumarol." Acta Pharmaceutica 54, br. 2 (2004): 119-131. https://hrcak.srce.hr/16819
Harvard
KOSTOVA, I.P., MANOLOV, I., i RADULOVA, M.K. (2004). 'Stability of the complexes of some lanthanides with coumarin derivatives. II. Neodymium(III)-acenocoumarol', Acta Pharmaceutica, 54(2), str. 119-131. Preuzeto s: https://hrcak.srce.hr/16819 (Datum pristupa: 27.06.2019.)
Vancouver
KOSTOVA IP, MANOLOV I, RADULOVA MK. Stability of the complexes of some lanthanides with coumarin derivatives. II. Neodymium(III)-acenocoumarol. Acta Pharm. [Internet]. 2004 [pristupljeno 27.06.2019.];54(2):119-131. Dostupno na: https://hrcak.srce.hr/16819
IEEE
I.P. KOSTOVA, I. MANOLOV i M.K. RADULOVA, "Stability of the complexes of some lanthanides with coumarin derivatives. II. Neodymium(III)-acenocoumarol", Acta Pharmaceutica, vol.54, br. 2, str. 119-131, 2004. [Online]. Dostupno na: https://hrcak.srce.hr/16819. [Citirano: 27.06.2019.]

Sažetak
A complex of neodymium(III) with 4-hydroxy-3-[1-(4-nitrophenyl)-3-oxobutyl]-2H-1-benzopyran-2-one (acenocoumarol) was synthesized by mixing water solutions of neodymium(III) nitrate and the ligand (metal to ligand molar ratio of 1:3). The complex was characterized and identified by elemental analysis, conductivity, IR, 1H NMR and mass spectral data. DTA and TGA were applied to study the composition of the compound. Elemental and mass spectral analysis of the complex indicated the formation of a compound of the composition NdR3x6H2O, where R = C19H14NO6-. The reaction of neodymium(III) with 4-hydroxy-3-[1-(4-nitrophenyl)-3-oxobutyl]-2H-1-benzopyran-2-one was studied in detail by the spectrophotometric method. The stepwise formation of three complexes, vis., NdR2+, NdR2+ and NdR3 was established in the pH region studied (pH 3.0-7.5). The equilibrium constants for 1:1, 1:2 and 1:3 complexes were determined to be log K1 = 6.20 ± 0.06; log K2 = 3.46 ± 0.07 and log K3 = 2.58 ± 0.05, respectively.

Ključne riječi
neodymium(III) complex; 4-hydroxy-3-[1-(4-nitrophenyl)-3-oxobutyl]-2H-1-benzopyran-2-one; stability

Hrčak ID: 16819

URI
https://hrcak.srce.hr/16819

[hrvatski]

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