Research Article | Open Access Volume 15| Issue 3 | Page 47-53 | https://doi.org/10.15228/2025.v15.i3.p08 |
Complex Compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-Hydroxypicolinic acid (3-HPA) and 3,5-Dinitrosalicylic acid (3,5-DNSA) as Precursors of Micro- and Nano-sized Oxides
D. L. Han
Department of Environmental Chemistry Analytical Institute of Environmental Chemistry Vietnam – Russia Tropical Center, Hanoi, Vietnam
A. Utenyshev
Kosygin Russian State University (Technologies. Design. Art), Moscow, 119071, Russia
Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, Chernogolovka, Moscow Region 142432, Russia
G. Shilov
Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, Chernogolovka, Moscow Region 142432, Russia
N. Lobanov
Peoples’ Friendship University of Russia, Moscow, 117198, Russia.
O. Kovalchukova
Peoples’ Friendship University of Russia, Moscow, 117198, Russia.
Kosygin Russian State University (Technologies. Design. Art), Moscow, 119071, Russia.
| Received 24 Mar, 2025 | Accepted 10 Apr, 2025 | Published 14 Apr, 2025 |
Nine complex compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-hydroxy picolinic acid (3-HPA) and 3,5-dinitrosalicylic acid (3,5-DNSA) of the composition ML2 (M: Ni2+, Cu2+ and Zn2+; L: 3-HPA and 3,5-DNSA) and TiOL2 were isolated and studied by spectroscopic methods and X-ray structure analysis. The coordination of 3-HPA with the metals involves the N pyridine atom and an O atom of the neighboring COOH group. For 3,5-DNSA, a chelate cycle is formed with two O atoms of carboxylic and hydroxy-groups. This was proved by X-ray analysis for Cu complexes and UV-VIS and IR spectra of all other complexes in comparison with the exact data for Cu complexes. The introduction of 9,10-phenanthroline prevents the coordination of 3,5-DNSA with Cu, and it acts as a counter-ion. Thermal decomposition of the isolated complexes and their mixtures leads to the formation of micro-sized metal oxides (3-30 mm) and nano-sized metal(II) titanates (30-100 nm).
How to Cite this paper?
APA-7 Style
D. L. Han, A. Utenyshev, G. Shilov, N. Lobanov and O. Kovalchukova (2025). Complex Compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-Hydroxypicolinic acid (3-HPA) and 3,5-Dinitrosalicylic acid (3,5-DNSA) as Precursors of Micro- and Nano-sized Oxides. Pakistan Journal of Chemistry, 15(3), 47-53. https://doi.org/10.15228/2025.v15.i3.p47-53.
ACS Style
Han. D. L; Utenyshev. A; Shilov. G; Lobanov. N; and Kovalchukova. O; Complex Compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-Hydroxypicolinic acid (3-HPA) and 3,5-Dinitrosalicylic acid (3,5-DNSA) as Precursors of Micro- and Nano-sized Oxides. Pakistan Journal of Chemistry, 15(3), 47-53. https://doi.org/10.15228/2025.v15.i3.p47-53.
AMA Style
Han. D. L., Utenyshev. A., Shilov. G., Lobanov. N., and Kovalchukova. O., Complex Compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-Hydroxypicolinic acid (3-HPA) and 3,5-Dinitrosalicylic acid (3,5-DNSA) as Precursors of Micro- and Nano-sized Oxides. Pakistan Journal of Chemistry, 15(3), 47-53. https://doi.org/10.15228/2025.v15.i3.p47-53.
Chicago/Turabian Style
Han DL, Utenyshev A, Shilov G, Lobanov N, and Kovalchukova O “Complex Compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-Hydroxypicolinic acid (3-HPA) and 3,5-Dinitrosalicylic acid (3,5-DNSA) as Precursors of Micro- and Nano-sized Oxides” 2025. Pakistan Journal of Chemistry, 15(3), 47-53. https://doi.org/10.15228/2025.v15.i3.p47-53.
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