{"id":7984,"date":"2025-04-14T14:32:33","date_gmt":"2025-04-14T14:32:33","guid":{"rendered":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/?p=7984"},"modified":"2026-10-22T22:19:56","modified_gmt":"2026-10-22T22:19:56","slug":"pjc-0825","status":"publish","type":"post","link":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2025\/04\/14\/pjc-0825\/","title":{"rendered":"Complex Compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-Hydroxypicolinic acid (3-HPA) and 3,5-Dinitrosalicylic acid\u00a0(3,5-DNSA) as Precursors of Micro- and Nano-sized Oxides"},"content":{"rendered":"\t\t
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Research Article | Open Access<\/strong><\/div>\n
Volume 15| Issue 4 | Page 93-100 | https:\/\/doi.org\/10.15228\/2025.v15.i4.p1<\/a>5<\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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<\/b><\/strong><\/h4>\n

D. L. Han<\/strong>
Department of Environmental Chemistry Analytical Institute of Environmental Chemistry Vietnam – Russia Tropical Center, Hanoi, Vietnam<\/p>\n

A. Utenyshev<\/strong>
Kosygin Russian State University (Technologies. Design. Art), Moscow, 119071, Russia<\/p>\n

Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, Chernogolovka, Moscow Region 142432, Russia<\/p>\n

G. Shilov<\/strong>
Federal Research Center of Problem of Chemical Physics and Medicinal Chemistry RAS, Chernogolovka, Moscow Region 142432, Russia<\/p>\n

N. Lobanov<\/strong>
Peoples’ Friendship University of Russia, Moscow, 117198, Russia.<\/p>\n

O. Kovalchukova<\/strong><\/a>
Peoples’ Friendship University of Russia, Moscow, 117198, Russia.<\/p>\n

Kosygin Russian State University (Technologies. Design. Art), Moscow, 119071, Russia.<\/p>\n

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\n\n\n\n
Received<\/strong>
24 Mar, 2025<\/td>\n		Accepted<\/strong>
10 Apr, 2025<\/td>\n		Published<\/strong>
14 Apr, 2025<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

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<\/sub> (M: Ni2+<\/sup>, Cu2+<\/sup> and Zn2+<\/sup>; L: 3-HPA and 3,5-DNSA) and TiOL2<\/sub> 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).<\/p>\n<\/div>\n

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How to Cite this paper?<\/h3>\n
\n

APA-7 Style<\/strong>
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<\/em>, 15(3), 47-53.<\/a>   https:\/\/doi.org\/10.15228\/2025.v15.i3.p08.<\/a><\/p>

ACS Style<\/strong><\/p>

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. Pak. J. Chem.<\/em> 15(3), 47-53.<\/a>   https:\/\/doi.org\/10.15228\/2025.v15.i3.p08<\/a>.<\/p>\n

AMA Style<\/strong>
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<\/em>, 15(3), 47-53.<\/a>   <\/span>https:\/\/doi.org\/10.15228\/2025.v15.i3.p08.<\/a><\/p>\n

Chicago\/Turabian Style<\/strong>
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.<\/em> Pakistan Journal of Chemistry<\/em>, 15(3), 47-53.<\/a>   <\/span>https:\/\/doi.org\/10.15228\/2025.v15.i3.p08<\/a><\/span><\/font>.<\/p>\n<\/div>\n<\/div>\n

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\"Creative<\/a><\/p>\n

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Research Article | Open Access Volume 15| Issue 4 | Page 93-100 | https:\/\/doi.org\/10.15228\/2025.v15.i4.p15 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. HanDepartment of Environmental Chemistry Analytical Institute of Environmental Chemistry Vietnam – Russia Tropical Center, Hanoi, Vietnam A. […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-7984","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"yoast_head":"\nComplex Compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-Hydroxypicolinic acid (3-HPA) and 3,5-Dinitrosalicylic acid\u00a0(3,5-DNSA) as Precursors of Micro- and Nano-sized Oxides - Pakistan Journal of Chemistry<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2025\/04\/14\/pjc-0825\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Complex Compounds of Ti(IV), Ni(II), Cu(II) and Zn(II) with 3-Hydroxypicolinic acid (3-HPA) and 3,5-Dinitrosalicylic acid\u00a0(3,5-DNSA) as Precursors of Micro- and Nano-sized Oxides - Pakistan Journal of Chemistry\" \/>\n<meta property=\"og:description\" content=\"Research Article | Open Access Volume 15| Issue 4 | Page 93-100 | https:\/\/doi.org\/10.15228\/2025.v15.i4.p15 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. 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