David Kočović , Berta Barta Holló , Ivana Borišev , Vukadin Leovac , Ljiljana Vojinović Ješić , Gerald Giester , Sergiu Shova , Zoran D. Tomić , Željko Jaćimović
{"title":"镍（II）和锌（II）与 4-甲基吡唑配合物的合成、表征和抗氧化能力","authors":"David Kočović , Berta Barta Holló , Ivana Borišev , Vukadin Leovac , Ljiljana Vojinović Ješić , Gerald Giester , Sergiu Shova , Zoran D. Tomić , Željko Jaćimović","doi":"10.1016/j.ica.2024.122363","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper, the coordination of 4-methylpyrazole (L) to Ni(II) and Zn(II) ions is studied through the reactions of Ni(OAc)<sub>2</sub>·4H<sub>2</sub>O and Zn(OAc)<sub>2</sub>·2H₂O with 4-methylpyrazole in a 1:2 metal-to-ligand molar ratio in ethanol at room temperature. From the reaction mixtures, new complex compounds of formulae: [Ni(OAc)<sub>2</sub>L<sub>4</sub>] and [Zn(OAc)<sub>2</sub>L<sub>2</sub>] were crystallized. The crystal and molecular structure of the synthesized complexes were determined by single-crystal X-ray structure analysis. The coordination environment of Ni(II) in its complex is octahedral, while that of Zn(II) is tetrahedral. The compounds are characterized by IR spectra and elemental analysis. Their thermal stability, a crucial property, is analyzed by thermogravimetry. To get a better insight into the decomposition mechanism coupled TG-MS measurements were carried out, too. The tests of the antioxidative activity of the new complexes on DPPH radical showed that the Zn(II) complex is more effective than the Ni(II) complex.</p></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"574 ","pages":"Article 122363"},"PeriodicalIF":2.7000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0020169324004547/pdfft?md5=c6f05fd8d6485d78fe59ae4e552aaf43&pid=1-s2.0-S0020169324004547-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Synthesis, characterization and antioxidative capacity of nickel(II) and zinc(II) complexes with 4-methylpyrazole\",\"authors\":\"David Kočović , Berta Barta Holló , Ivana Borišev , Vukadin Leovac , Ljiljana Vojinović Ješić , Gerald Giester , Sergiu Shova , Zoran D. Tomić , Željko Jaćimović\",\"doi\":\"10.1016/j.ica.2024.122363\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this paper, the coordination of 4-methylpyrazole (L) to Ni(II) and Zn(II) ions is studied through the reactions of Ni(OAc)<sub>2</sub>·4H<sub>2</sub>O and Zn(OAc)<sub>2</sub>·2H₂O with 4-methylpyrazole in a 1:2 metal-to-ligand molar ratio in ethanol at room temperature. From the reaction mixtures, new complex compounds of formulae: [Ni(OAc)<sub>2</sub>L<sub>4</sub>] and [Zn(OAc)<sub>2</sub>L<sub>2</sub>] were crystallized. The crystal and molecular structure of the synthesized complexes were determined by single-crystal X-ray structure analysis. The coordination environment of Ni(II) in its complex is octahedral, while that of Zn(II) is tetrahedral. The compounds are characterized by IR spectra and elemental analysis. Their thermal stability, a crucial property, is analyzed by thermogravimetry. To get a better insight into the decomposition mechanism coupled TG-MS measurements were carried out, too. The tests of the antioxidative activity of the new complexes on DPPH radical showed that the Zn(II) complex is more effective than the Ni(II) complex.</p></div>\",\"PeriodicalId\":13599,\"journal\":{\"name\":\"Inorganica Chimica Acta\",\"volume\":\"574 \",\"pages\":\"Article 122363\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0020169324004547/pdfft?md5=c6f05fd8d6485d78fe59ae4e552aaf43&pid=1-s2.0-S0020169324004547-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Inorganica Chimica Acta\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0020169324004547\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganica Chimica Acta","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0020169324004547","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Synthesis, characterization and antioxidative capacity of nickel(II) and zinc(II) complexes with 4-methylpyrazole
In this paper, the coordination of 4-methylpyrazole (L) to Ni(II) and Zn(II) ions is studied through the reactions of Ni(OAc)2·4H2O and Zn(OAc)2·2H₂O with 4-methylpyrazole in a 1:2 metal-to-ligand molar ratio in ethanol at room temperature. From the reaction mixtures, new complex compounds of formulae: [Ni(OAc)2L4] and [Zn(OAc)2L2] were crystallized. The crystal and molecular structure of the synthesized complexes were determined by single-crystal X-ray structure analysis. The coordination environment of Ni(II) in its complex is octahedral, while that of Zn(II) is tetrahedral. The compounds are characterized by IR spectra and elemental analysis. Their thermal stability, a crucial property, is analyzed by thermogravimetry. To get a better insight into the decomposition mechanism coupled TG-MS measurements were carried out, too. The tests of the antioxidative activity of the new complexes on DPPH radical showed that the Zn(II) complex is more effective than the Ni(II) complex.
期刊介绍：
Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews.
Topics covered include:
• chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies;
• synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs);
• reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models;
• applications of inorganic compounds, metallodrugs and molecule-based materials.
Papers composed primarily of structural reports will typically not be considered for publication.
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