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Journal articles on the topic 'Zinc(II) complex'

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Published: 5 June 2025

Last updated: 1 August 2025

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1

Okabe, N., and Y. Sasaki. "Zinc(II) Complex of Urocanic Acid." Acta Crystallographica Section C Crystal Structure Communications 51, no. 1 (1995): 65–67. http://dx.doi.org/10.1107/s0108270194005056.

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2

Okabe, N., Y. Kohyama, and K. Ikeda. "A Zinc(II) Complex of Creatinine." Acta Crystallographica Section C Crystal Structure Communications 51, no. 2 (1995): 222–24. http://dx.doi.org/10.1107/s0108270194010036.

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3

Wu, Chun, Xin Ping Zheng, and Lin Lin Chen. "Study on Antioxidant Activity of Dihydromyricetin-Zinc(II) Complex." Advanced Materials Research 183-185 (January 2011): 863–67. http://dx.doi.org/10.4028/www.scientific.net/amr.183-185.863.

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Dihydromyricetin-zinc(II) complex was synthesized. The scavenging activity of DPPH radical, hydroxyl radical, superoxide anion radical and alkane radical by dihydromyricetin-zinc(II) complex were determine, moreover compared with Vc. The results showed that dihydromyricetin-zinc(II) complex possessed strong scavenging activities on DPPH•, hydroxyl radical, superoxide anion radical and alkane radical with correspounding maximum scavenging rate 74%, 70% , 65% and 50% at the concentration from 0.1 mmol/L to 0.5 mmol/L, respectively, which were higher than Vc. These results suggested that dihydrom

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4

Newman, J. M., C. A. Bear, T. W. Hambley, and H. C. Freeman. "Structure of bis(glycinato)zinc(II) monohydrate, a five-coordinate zinc(II) complex." Acta Crystallographica Section C Crystal Structure Communications 46, no. 1 (1990): 44–48. http://dx.doi.org/10.1107/s0108270189005664.

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5

Pinky, Gautam, Sharma Neeraj, Chaturvedi K., and K. Chaturvedi G. "Synthesis, characterisation and biological studies of CuII and ZnII metal complexes with drug lorazepam [7-chloro-5-(o-chlorophenyl)-1,3-dihydro- 3-hydroxy-2H-1,4-benzodiazepine-2-one]." Journal of Indian Chemical Society Vol. 83, Mar 2006 (2006): 269–71. https://doi.org/10.5281/zenodo.5835494.

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Chemical Laboratory, Agra College, Agra-282 002, Uttar Pradesh, India <em>Manuscript received 19 January 2005, revised 14 November 2005, accepted 2 December 2005</em> 1 : 1 complexes of Cu<sup>II</sup> and Zn<sup>II</sup> with drug lorazepam having general formula [ML(NO<sub>3</sub>)<sub>2</sub>.2H<sub>2</sub>O] have been synthesized and characterized on the basis of elemental analysis, IR and thermal studies. Analytical and IR data suggest that both complexes are monomeric due to coordination by N(l) and N(4) atoms.The ligand and complexes have been screened for their antimicrobial

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6

Noor, Shabana, Shintaro Suda, Tomoyuki Haraguchi, Fehmeeda Khatoon, and Takashiro Akitsu. "Chiral crystallization of a zinc(II) complex." Acta Crystallographica Section E Crystallographic Communications 77, no. 5 (2021): 542–46. http://dx.doi.org/10.1107/s2056989021003650.

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The compound, {6,6′-dimethoxy-2,2′-[(4-azaheptane-1,7-diyl)bis(nitrilomethanylidyne)]diphenolato}zinc(II) methanol monosolvate, [Zn(C22H27N3O4)]·CH3OH, at 298 K crystallizes in the orthorhombic space group Pna21. The Zn atom is coordinated by a pentadentate Schiff base ligand in a distorted trigonal–bipyramidal N3O2 geometry. The equatorial plane is formed by the two phenolic O and one amine N atom. The axial positions are occupied by two amine N atoms. The distorted bipyramidal geometry is also supported by the trigonality index (τ), which is found to be 0.85 for the molecule. In the crystal,

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7

Adeyemo, Adegboye, and Foluke Akinwumi. "A ZINC(II) COMPLEX OF VITAMIN B1." Journal of Coordination Chemistry 14, no. 3 (1986): 231–34. http://dx.doi.org/10.1080/00958978608073912.

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8

Malook, M. V., O. S. Matrosov, and I. V. Rula. "Complex zinc (II) compounds as nitrification inhibitors." Voprosy Khimii i Khimicheskoi Tekhnologii, no. 6 (December 2023): 129–39. http://dx.doi.org/10.32434/0321-4095-2023-151-6-129-139.

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This work was aimed at synthesizing a number of new complex compounds, nitrification inhibitors containing Zn2+, and determining their structure, composition and biological activity. Four substances with different ratios of ligands (4-amino-1,2,4-trazole (ATC)) and dicyandiamide (DCD)) were synthesized. Some physicochemical properties were determined, such as thermal behavior and solubility of complexes in pure KAS-28 (a saturated solution of urea and ammonium nitrate containing 28% nitrogen) and its 50 % solution. The content of Zn2+ in each substance was determined. The functional groups bel

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9

Kyaw, Z. Y., A. A. Semikin, D. G. Sandakova, A. A. Dekhtyarenko, and V. A. Yakimov. "Enhancement of reagent regimes for complex ores flotation." Mining Industry Journal (Gornay Promishlennost), no. 3/2024 (July 10, 2024): 100–104. http://dx.doi.org/10.30686/1609-9192-2024-3-100-104.

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Pyrite copper-zinc (sulfide) and polymetallic ores in Russia are complex and rebellious mineral raw materials. The main processing technology for such ores is flotation. Enhancement of the flotation technology for such mineral raw materials is currently performed in several directions. The practice of copper-zinc ore processing proves that obtaining highquality zinc and pyrite concentrates is impossible without the use of various modifiers in the sphalerite and pyrite flotation process. Such reagents are copper (II), zinc and iron (II) sulfates in the alkali-calcic medium. Therefore, research

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10

Xu, Jing, Qing Liu, and Wei-Yin Sun. "Shape-controlled zinc(II) oxide nanomaterial constructed from three-dimensional zinc(II) coordination complex." Solid State Sciences 12, no. 9 (2010): 1575–79. http://dx.doi.org/10.1016/j.solidstatesciences.2010.07.002.

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11

Krstic, Milena, Branka Petković, Miloš Milčić, Dušan Mišić, and Juan Francisco Santibanez. "Synthesis, characterization and biological study of new dinuclear zinc(II) and nickel(II) octaaza macrocyclic complexes." Macedonian Journal of Chemistry and Chemical Engineering 38, no. 1 (2019): 1. http://dx.doi.org/10.20450/mjcce.2019.1599.

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Two new nitrato complexes of zinc and nickel with 1,4,8,11-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc), have been synthesized and characterized. The IR spectral peaks showed that the coordinated and ionic nitrate ions are in agreement with the formula proposed by elemental analysis. Conductometric titrations predicted methanol to be a convenient solvent for synthesis and revealed the stoichiometry of the complexes, while molar electrical conductivities indicated a 1 : 3 complex electrolyte type for the zinc complex, and a 1 : 2 complex electrolyte type for the nickel com

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12

West, Dayne, Melissa A. Pinard, Chingkuang Tu, David N. Silverman, and Robert McKenna. "Human carbonic anhydrase II–cyanate inhibitor complex: putting the debate to rest." Acta Crystallographica Section F Structural Biology Communications 70, no. 10 (2014): 1324–27. http://dx.doi.org/10.1107/s2053230x14018135.

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The binding of anions to carbonic anhydrase II (CA II) has been attributed to high affinity for the active-site zinc. An anion of interest is cyanate, for which contrasting binding modes have been reported in the literature. Previous spectroscopic data have shown cyanate behaving as an inhibitor, directly binding to the zinc, in contrast to previous crystallographic data that implied that cyanate acts as a substrate mimic that is not directly bound to the zinc but overlaps with the binding site of the substrate CO2. Wild-type and the V207I variant of CA II have been expressed and X-ray crystal

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13

Gopal, C. Giri, Haldar Shobhraj, and Bera Manindranath. "Anthracene-based new dinucleating ligand supported assembly of bridged dicopper(II) and dizinc(II) centers for the exploration of sugar-metal ion interactions." Journal of Indian Chemical Society 93, Jul 2016 (2016): 819–26. https://doi.org/10.5281/zenodo.5638158.

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Department of Chemistry, University of Kalyani, Kalyani-741 235, West Bengal, India <em>E-mail</em> : mbera2009@klyuniv.ac.in Fax : 91-33-25828282 Two new, a dinuclear copper(II) and a dinuclear zinc(II) complexes of an anthracene-based new dinucleating ligand, <em>N</em>,<em>N</em>'-bis[anthracene-2-ylmethyl]-<em>N</em>,<em>N</em>'-bis[2-hydroxyethyl]-1,3-diaminopropan-2-ol (H<sub>3</sub>L) have been synthesized and characterized. In methanol, the reaction of stoichiometric amounts of Cu(OAc)<sub>2</sub>.H<sub>2</sub>O and the ligand H<sub>3</sub>L in the pressence of NaOH at ambient

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14

Zhang, Li, Xiao-Yang Qiu, and Shu-Juan Liu. "Syntheses, Characterization, Crystal Structures and Antimicrobial Activity of Copper(II), Nickel(II) and Zinc(II) Complexes Derived from 5-Bromo-2- ((cychlopentylimino)methyl)phenol." Acta Chimica Slovenica 70, no. 1 (2023): 12–20. http://dx.doi.org/10.17344/acsi.2022.7737.

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Four new complexes of copper(II), nickel(II) and zinc(II), [CuL2] (1), [Ni3L2(4-BrSal)2(CH3COO)2(CH3OH)2]·2CH3OH(2), [ZnBr2(HL)2] (3) and [ZnL(dca)]n (4), where L is 5-bromo-2-((cychlopentylimino)methyl)phenolate, HL is the zwitterionic form of 5-bromo-2-((cychlopentylimino)methyl)phenol, 4-BrSal is the monoanionic form of 4-bromosalicylaldehyde, dca is dicyanamide anion, were synthesized and characterized by elemental analysis, IR and UV-Vis spectroscopy. The structures of the complexes were further confirmed by single crystal X-ray structure determination. Complex 1 is a mononuclear copper(I

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15

KAWASE, Masaya, Noritaka KAGAYA, Soh-ichiro AKAMATSU, et al. "Liver Protection by Bis(Maltolato)Zinc(II) Complex." Experimental Animals 53, no. 1 (2004): 1–9. http://dx.doi.org/10.1538/expanim.53.1.

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16

Andreev, V. P., P. S. Sobolev, D. O. Zaitsev, and V. A. Tafeenko. "Complex formation between zinc(II) tetraphenylporphyrinate and alkylamines." Russian Journal of General Chemistry 84, no. 2 (2014): 320–25. http://dx.doi.org/10.1134/s1070363214020303.

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17

Burlov, Anatolii S., Alla S. Antsyshkina, Georgii G. Sadikov, et al. "The first polymeric pentacoordinate zinc(ii) azoimidazole complex." Mendeleev Communications 21, no. 2 (2011): 87–88. http://dx.doi.org/10.1016/j.mencom.2011.03.009.

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18

Şahin, E., S. İde, A. Ataç, and Ş. Yurdakul. "Structural features of dibromobis(nicotinamide)zinc(II) complex." Journal of Molecular Structure 616, no. 1-3 (2002): 253–58. http://dx.doi.org/10.1016/s0022-2860(02)00346-0.

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19

Zhao, Yongmei, Shourong Zhu, Min Shao, Xiang He, Mingxing Li, and Wencong Lu. "Novel hexanuclear zinc(II) complex of 1,3,5-benzenemethyltriiminodiacetate." Inorganic Chemistry Communications 11, no. 3 (2008): 239–42. http://dx.doi.org/10.1016/j.inoche.2007.12.007.

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20

Sen, Pinar, S. Zeki Yildiz, Göknur Yasa Atmaca, and Ali Erdogmus. "Five-nuclear phthalocyanine complex bearing terpyridine zinc complex: Synthesis, and photophysicochemical studies." Journal of Porphyrins and Phthalocyanines 22, no. 01n03 (2018): 181–88. http://dx.doi.org/10.1142/s1088424618500116.

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The context of this study is based on the synthesis of tetrakis{4-(2-([2,2[Formula: see text]:6[Formula: see text],2[Formula: see text]-terpyridine]Zn(II)-4[Formula: see text]-yl(methyl)amino)ethoxy)}phthalocyaninato zinc (II) (3) bearing four terpyridine-Zn(II) complexes that are directly linked through oxygen bridges to the macrocyclic core in order to create new supramolecular assemblies. The target phthalocyanine (3) was obtained by cyclotetramerization reaction of terpyridine-Zn (II) complex substituted phthalonitrile (2). All novel compounds synthesized in this study were fully character

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21

Nakamura, Mizuki, Daigo Urakawa, Ziyu He, Isao Akagi, De-Xing Hou, and Kozue Sakao. "Apoptosis Induction in HepG2 and HCT116 Cells by a Novel Quercetin-Zinc (II) Complex: Enhanced Absorption of Quercetin and Zinc (II)." International Journal of Molecular Sciences 24, no. 24 (2023): 17457. http://dx.doi.org/10.3390/ijms242417457.

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Quercetin forms complexes with various metals due to its structural attributes. It predominantly exhibits chelating activity at the 3-hydroxy/4-carbonyl group. Previously, coordination in synthetically obtained quercetin–zinc (II) complexes has been limited to this group. However, the expanded coordination observed in quercetin–iron complexes has opened avenues for diverse applications. Thus, synthesizing novel quercetin–zinc complexes with different coordination positions is a significant advance. In our study, we not only synthesized and comprehensively characterized a new quercetin–zinc (II

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22

S., N. DUBEY, and K. NEPAL J. "Equilibrium Study on the Complex Formation of Manganese(II), Iron(II), Cobalt(II), Nickel(II), Copper(II) and Zinc(II) with Catechol and Pyrogallol." Journal of Indian Chemical Society Vol. 63, Sep 1986 (1986): 842–44. https://doi.org/10.5281/zenodo.6302395.

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Department of Chemistry, Kurukshetra University, Kurukshetra-132 119 <em>Manuscript received 22 May 1985, revised 17 February 1986, accepted 25 June 1986</em> Equilibrium Study on the Complex Formation of Manganese(II), Iron(II), Cobalt(II), Nickel(II), Copper(II) and Zinc(II) with Catechol and Pyrogallol  

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23

Zhang, Li, Xiao-Yang Qiu, and Shu-Juan Liu. "Syntheses, Characterization, Crystal Structures and Antimicrobial Activity of Copper(II), Nickel(II) and Zinc(II) Complexes Derived from 5-Bromo-2- ((cychlopentylimino)methyl)phenol." Acta Chimica Slovenica 70, no. 1 (2023): 12–20. http://dx.doi.org/10.17344/acsi.2022.10.17344/acsi.2022.7737.

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Four new complexes of copper(II), nickel(II) and zinc(II), [CuL2] (1), [Ni3L2(4-BrSal)2(CH3COO)2(CH3OH)2]·2CH3OH (2), [ZnBr2(HL)2] (3) and [ZnL(dca)]n (4), where L is 5-bromo-2-(cychlopentylimino)methyl)phenolate, HL is the zwitterionic form of 5-bromo-2-((cychlopentylimino)methyl)phenol, 4-BrSal is the monoanionic form of 4-bromosalicylaldehyde, dca is dicyanamide anion, were synthesized and characterized by elemental analysis, IR and UV-Vis spectroscopy. The structures of the complexes were further confirmed by single crystal X-ray structure determination. Complex 1 is a mononuclear copper(I

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24

A., K. BANERJEE, K. GHOSH MONOJIT, K. SINHA SAILENDRA, and K. ROY S. "Alkali Metal Complexes. Binuclear Alkali Metal Complexes with Magnesium(II) and Zinc(II) Acetylacetonates." Journal of Indian Chemical Society Vol. 62, Apr 1985 (1985): 272–74. https://doi.org/10.5281/zenodo.6324541.

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Chemistry Department, Patna University, Patna-800 005 <em>Manuscript received 16 June 1983, accepted 30 April 1985</em> Heterobinuclear alkali metal complexes have been synthesised by treating metal chelates of magnesium and zinc acetylacetonates with alkali metal salts of 1-nitroso-2-naphthol and 8-hydroxyquinoline in ethanol/benzene-ethanol mixture. The general formula of the complex has been established as [M<sub>α </sub>(acac)<sub>2</sub> M<sub>b</sub>L], where M<sub>α</sub> -magnesium or zinc, acac<em>- </em>acetylacetonate, and M<sub>b</sub>L -Li, Na and K

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25

Grazioso, Rinaldo, Sara García-Viñuales, Luigi Russo, et al. "Substitution of the Native Zn(II) with Cd(II), Co(II) and Ni(II) Changes the Downhill Unfolding Mechanism of Ros87 to a Completely Different Scenario." International Journal of Molecular Sciences 21, no. 21 (2020): 8285. http://dx.doi.org/10.3390/ijms21218285.

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The structural effects of zinc replacement by xenobiotic metal ions have been widely studied in several eukaryotic and prokaryotic zinc-finger-containing proteins. The prokaryotic zinc finger, that presents a bigger βββαα domain with a larger hydrophobic core with respect to its eukaryotic counterpart, represents a valuable model protein to study metal ion interaction with metallo-proteins. Several studies have been conducted on Ros87, the DNA binding domain of the prokaryotic zinc finger Ros, and have demonstrated that the domain appears to structurally tolerate Ni(II), albeit with important

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26

Chen, Min, Shengjie Jiang, Laurent Maron, and Xin Xu. "Transition metal-induced dehydrogenative coupling of zinc hydrides." Dalton Transactions 48, no. 6 (2019): 1931–35. http://dx.doi.org/10.1039/c8dt04651d.

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27

Adachi, Yusuke, Jiro Yoshida, Yukihiro Kodera, et al. "A new insulin-mimetic bis(allixinato)zinc(II) complex: structure?activity relationship of zinc(II) complexes." JBIC Journal of Biological Inorganic Chemistry 9, no. 7 (2004): 885–93. http://dx.doi.org/10.1007/s00775-004-0590-8.

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28

Tanaka, Yasuo, Tomoki Yoneda, Ko Furukawa та ін. "A Stable Organic π-Radical of a Zinc(II)-Copper(I)-Zinc(II) Complex of Decaphyrin". Angewandte Chemie International Edition 54, № 37 (2015): 10908–11. http://dx.doi.org/10.1002/anie.201505130.

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29

Tanaka, Yasuo, Tomoki Yoneda, Ko Furukawa та ін. "A Stable Organic π-Radical of a Zinc(II)-Copper(I)-Zinc(II) Complex of Decaphyrin". Angewandte Chemie 127, № 37 (2015): 11058–61. http://dx.doi.org/10.1002/ange.201505130.

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30

Jacimovic, Zeljko, Goran Bogdanovic, Berta Holló, Vukadin Leovac, and Katalin Szécsényi-Mészáros. "Transition metal complexes with pyrazole-based ligands, Part 29: Reactions of zinc(II) and mercury(II) thiocyanate with 4-acetyl-3-amino-5-methylpyrazole." Journal of the Serbian Chemical Society 74, no. 11 (2009): 1259–71. http://dx.doi.org/10.2298/jsc0911259j.

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The work is concerned with the crystal and molecular structures of zinc(II) and mercury(II) complexes with 4-acetyl-3-amino-5-methyl-pyrazole (aamp) of the coordination formulae [Zn(NCS)2(aamp)2[ and (Haamp)2[Hg(SCN)4]. The zinc(II) complex was obtained by the reaction of a warm methanolic solution of aamp with a mixture of zinc(II) nitrate and ammonium thiocyanate, whereas the mercury(II) complex was prepared by the reaction of a warm ethanolic solution of aamp and a warm, slightly acidified aqueous solution of [Hg(SCN)4]2-. Both complexes have a tetrahedral geometry, which in the case of zin

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31

Lee, Dong Hee, Jaewook An, Jihye Oh, and In-Hyeok Park. "Zinc(II) and Copper(II) Complexes of 4-Styrylpyridine and 1-Adamantanecarboxylic Acid: Syntheses, Crystal Structures, and Photopolymerization." Crystals 13, no. 8 (2023): 1226. http://dx.doi.org/10.3390/cryst13081226.

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A combination of 4-styrylpyridine (spy) and 1-adamantanecarboxylic acid (Hadc) was employed in the assembly reactions with Zn(II) and Cu(II) nitrates. The photoreactivity of the products was compared and discussed on the basis of the structure–function relationship. Zinc(II) complex 1 is a trinuclear species of type [Zn3(spy)2(adc)6] in which three zinc(II) atoms are linearly arranged, with two adjacent zinc(II) atoms linked by three bridging carboxylates. Two spy ligands occupy both terminal positions, yielding the overall structure of a six-bladed windmill. Copper(II) complex 2, [Cu(spy)2(ad

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32

M., Sivasankaran Nair, and Theodore David S. "Studies on the solution equilibria involved in some copper(II) and zinc(II) Schiff base complex systems." Journal of Indian Chemical Society Vol. 77, May 2000 (2000): 220–22. https://doi.org/10.5281/zenodo.5867131.

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Department of Chemistry, Manonmaniam Sundaranar University, Abishekapatti, Tirunelveli-627 012, India Department of Chemistry. St. John's College, Tirunelveli-627 002, India <em>Manuscript received 12 August 1999. rel'i.ted 29 November 1999. accepted 2 December 1999</em> Investigations on the equilibrium chemistry of Cu<sup>II</sup> and Zn<sup>II</sup>-2-pyridinccarboxaldehydc (A)-L-valine, L-phenylalaninc and DL-tryptophane (<strong>B</strong>) systems show that in the M(AB), M(AB)A and M(AB)<sub>2</sub> type of complexes, the Schiff base(AB) binds in a terdentate manner

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33

Akitsu, Takashiro, Yuto Kuroda, Shintaro Suda, Tetsundo Furuya, Tomoyuki Haraguchi, and Masaki Unno. "Weakly Non-Covalent Docking of Amino-Acid Schiff Base Zn(II) Complex to Lysozyme." Key Engineering Materials 888 (June 9, 2021): 105–10. http://dx.doi.org/10.4028/www.scientific.net/kem.888.105.

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Artificial metal enzymes that combine proteins with synthesized unnatural metal complexes as cofactors are attracting attention. The preparation of artificial metal enzymes not only clarifies the behavior of metal ions in biology, but also leads to the development of synthetic chemistry fields such as the discovery of new catalytic reactivity and substrate selectivity that are not observed in nature. In addition, a certain Schiff base zinc (II) complex is known to exhibit antioxidant and anticancer activity, too. Therefore, in this study, we investigated a rapid synthesis method of two known a

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34

Nasri, Soumaya, Mouhieddinne Guergueb, Jihed Brahmi, Youssef O. Al-Ghamdi, Frédérique Loiseau, and Habib Nasri. "Synthesis of a Novel Zinc(II) Porphyrin Complex, Halide Ion Reception, Catalytic Degradation of Dyes, and Optoelectronic Application." Crystals 13, no. 2 (2023): 238. http://dx.doi.org/10.3390/cryst13020238.

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This work describes the synthesis of a novel zinc(II) porphyrin complex, namely [Meso-4α-tetra-(1,2,3-triazolyl)phenylporphyrinato]zinc(II) symbolized by 4α-[Zn(TAzPP)] (4), using the click chemistry approach in the presence of copper iodide. All of the synthetic porphyrin species reported herein were fully characterized by elemental analysis, infrared spectroscopy, proton nuclear magnetic resonance, UV-visible spectroscopy, and fluorescence. To synthesize the 4α-[Zn(TAzPP)] complex (4), we produced 4α-Meso-tetra-o-nitrophenylporphyrin (H2TNO2PP) and 4α-meso-tetra-o-aminophenylporphyrin (4α-H2

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35

Almeida, Patrícia Saraiva Vilas Boas de, Vitor da Cunha Baia, José Roberto da Silveira Maia, and Elson Santiago de Alvarenga. "Theoretical Approach by DFT in the characterization of the Zn(II) Benzoate." Journal of Engineering and Exact Sciences 10, no. 3 (2024): 18514. http://dx.doi.org/10.18540/jcecvl10iss3pp18514.

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The condensation reaction between aminoguanidine bicarbonate and benzoic acid produced 1,2,4-triazole which, after reaction with zinc(II) chloride, led to the formation of a complex, Zn(II)-1,2,4-triazole. This complex decomposes into chloroform leading to the formation of a by-product identified by multinuclear NMR (13C and 1H) as zinc(II) benzoate. Subsequently, a theoretical study, using the Hartree-Fock and DFT methods, was applied to validate zinc(II) benzoate as a byproduct of decomposition through the calculation of the magnetic shielding tensor (NMR), as well as to address some structu

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36

Uskoković-Marković, Snežana, Marina Milenković, and Leposava Pavun. "Zinc-quercetin complex: From determination to bioactivity." Acta agriculturae Serbica 25, no. 50 (2020): 113–20. http://dx.doi.org/10.5937/aaser2050113u.

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Flavonoids are a group of polyphenolic compounds widely present in the herbal world and playing an important role in the human diet. The flavanol quercetin makes up 70% of the total daily intake of flavonoids. Quercetin is able to complex with many metal ions, and it exhibits potent antioxidative ability. Using the equimolar solution variation method, it was confirmed that quercetin makes a complex with the zinc(II) ion at pH 5.25, in a stoichiometric ratio quercetin:zinc(II) ion = 2:1, with the absorption maximum l=363 nm. This fact was used to develop a simple, precise and accurate assay to

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37

MacDermott, TE. "Synthesis of Some Novel Dinuclear Metal Complexes, Containing Both Square-Planar and Tetrahedral Metal Ions, by the Reactions of Coordinated Diamines with an α-Hydroxy Ketone". Australian Journal of Chemistry 38, № 9 (1985): 1319. http://dx.doi.org/10.1071/ch9851319.

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Reactions between tris (propane-1,3-diamine)nickel(II) salts and 3- hydroxy-3-methylbutan-2-one in the presence of zinc(II) or cadmium(II) halides yield a series of di -oxygen-bridged dinuclear products which contain the square-planar nickel(II) complex of a 12-membered ligand ring one of whose members is either a zinc(II) or cadmium(II) halide. These complexes are thermally very stable but may be hydrolysed by water to give a complex of the corresponding α- imino alcohol.

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Zhang, Wei-Guang. "Synthesis, Crystal Structures and Antibacterial Activity of Nickel(II), Cadmium(II) and Zinc(II) Complexes with Hydrazone Ligands." Acta Chimica Slovenica 71, no. 3 (2024): 462–70. http://dx.doi.org/10.17344/acsi.2024.8763.

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Three mononuclear nickel(II), cadmium(II) and zinc(II) complexes, [NiL2]·2CH3OH·H2O (1), [CdI2(HL)]·CH3OH (2) and [ZnL2] (3), have been synthesized from 3-hydroxy-4-methoxy-N’-[(Z)-(pyridin-2-yl)methylidene]benzohydrazide (HL) by microwave irradiation method. All complexes were characterized by CHN elemental analyses and infrared spectra. Structures of the complexes were further studied by single crystal X-ray determination, which reveals that the Ni and Zn atoms in complexes 1 and 3 are in octahedral coordination, and the Cd atom in complex 2 is in square pyramidal coordination. The biologica

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Sucipto, Teguh Hari, Aswandi Wibrianto, Fahimah Martak та ін. "Eﬀect of Zinc(II)-2,4,5-triphenyl-1H-imidazole Complex Against Replication DENV-2 in Vero Cell". Indonesian Journal of Tropical and Infectious Disease 8, № 3 (2020): 183. http://dx.doi.org/10.20473/ijtid.v8i3.11776.

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Dengue virus (DENV) is a significant pathogen emerging worldwide as a cause of infectious disease. DENVs are transmitted to humans through female mosquitoes from Aedes aegypti and Aedes albopictus species. Indonesia is one of the largest countries in the world in dengue endemic regions worldwide. Dengue fever was occurred for the first time as an outbreak in Surabaya and Jakarta in 1968. Many eﬀorts have been made to prevent and treat DENV infections, and clinical trials of a number of vaccines are currently underway. Antiviral testing of DENV is an important alternative for drug characterizat

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Liu, Ting, Longxin Chen, and Duobin Chao. "Noble metal-free bis-tridentate benzimidazole zinc(ii) and iron(ii) complexes for selective CO₂ photoreduction." Dalton Transactions 51, no. 10 (2022): 4052–57. http://dx.doi.org/10.1039/d2dt00226d.

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Jalilehvand, Farideh, Natalie Sisombath, Bonnie Leung, and Vicky Mah. "Silver(I) and Lead(II) Complex Formation with Thiolates." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C719. http://dx.doi.org/10.1107/s2053273314092808.

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Lead toxicity is frequently attributed to the displacement of essential metals such as zinc. Lead(II) ions mainly inhibit the enzymatic activity of ALAD, a key zinc-containing metalloenzyme in the heme biosynthetic pathway with much higher affinity to bind to Pb(II) than Zn(II) ions via its cysteinyl residues. Also for silver(I) ions the interaction with thiol-containing species such as cysteine and glutathione plays a key role in bacterial inactivation and Ag(I) antimicrobial activity. We will present the results of our investigations on Pb(II) and Ag(I) complex formation with small thiol-con

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Amar, Hens, and Krishna Rajak Kajal. "Blue emissive ZnII sensor by N4O3 heptadentate ligand in mixed aqueous solution at physiological pH 7.4." Journal of Indian Chemical Society Vol. 92, Dec 2015 (2015): 1805–15. https://doi.org/10.5281/zenodo.5599387.

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Inorganic Chemistry Section, Department of Chemistry, Jadavpur University, Kolkata-700 032, India <em>E-mail</em> : kajalrajak@hotmail.com The N<sub>4</sub>O<sub>3</sub> coordinating heptadentate ligand forms a dinuclear zinc complex 1. H<sub>2</sub>O. ClO<sub>4</sub>, [Zn<sub>2</sub>L. 2H<sub>2</sub>O]. H<sub>2</sub>O. ClO<sub>4</sub>. In the complex, two zinc ions are held together by a µ-phenoxo bridge where the geometry around the Zn1 atom is distorted trigonal bipyramidal (= 0.75) and that of Zn2 is intermediate between square based pyramid and distorted trigonal bipyramid (<strong>

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Zhang, Hai-Rong, Yan-Cheng Liu, Ting Meng, et al. "Cytotoxicity, DNA binding and cell apoptosis induction of a zinc(ii) complex of HBrQ." MedChemComm 6, no. 12 (2015): 2224–31. http://dx.doi.org/10.1039/c5md00406c.

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A zinc(ii) complex of HBrQ showed higher in vitro antitumor activity. It induced cell apoptosis in BEL-7404 cells via G<sub>2</sub> phase arrest, led to mitochondria dysfunction and activation of caspase cascade. The central zinc(ii) should play a key role to enhance the antitumor effect

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Wang, Yi-Long, Zhu-Jia Shao, and Shao-Song Qian. "Binuclear and chain-structure zinc(II) complexes constructed from 3,4-dimethoxy-trans-cinnamic acid andN-donor coligands 4-(1H-pyrazol-3-yl)pyridine and 4,4′-bipyridine." Acta Crystallographica Section C Crystal Structure Communications 69, no. 5 (2013): 471–75. http://dx.doi.org/10.1107/s0108270113007075.

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3,4-Dimethoxy-trans-cinnamic acid (Dmca) reacts with zinc sulfate in the presence of 4-(1H-pyrazol-3-yl)pyridine (L1) or 4,4′-bipyridine (L2) under hydrothermal conditions to afford two mixed-ligand coordination complexes, namely tetrakis(μ-3,4-dimethoxy-trans-cinnamato-κ2O:O′)bis[[4-(1H-pyrazol-3-yl)pyridine]zinc(II)] heptahydrate, [Zn2(C11H11O4)4(C8H7N3)2]·7H2O or [Zn2(Dmca)4(L1)2]·7H2O, (I), andcatena-poly[[bis(3,4-dimethoxy-trans-cinnamato-κO)zinc(II)]-μ-4,4′-bipyridine-κ2N:N′], [Zn(C11H11O4)2(C10H8N2)]nor [Zn(Dmca)2(L2)]n, (II). The ZnIIcentres in the two compounds display different coord

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Yu, Qiong, Wei-Xia Xu, Ya-Hong Yao, Zeng-Qi Zhang, Shu Sun, and Jun Li. "Synthesis and photodynamic activities of a new metronidazole-appended porphyrin and its Zn(II) complex." Journal of Porphyrins and Phthalocyanines 19, no. 10 (2015): 1107–13. http://dx.doi.org/10.1142/s1088424615500868.

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One novel porphyrin 5,10,15-tris(phenyl)-20-[4-(2-(2-methyl-5-nitro-imidazolyl)ethoxyl)phenyl] porphyrin and its zinc(II) metalloporphyrin were synthesized and characterized by IR, UV-vis, 1H NMR, MS and elemental analysis. The single crystal structure of zinc(II) porphyrin shows that the Zn(II) ion is coordinated with four nitrogen atoms of porphyrin ring and one oxygen atom of ethanol from axial, forming a five-coordinated square pyramidal geometry. Their cytotoxicity and photodynamic activity against breast cancer cells were studied. The results indicate that both of the porphyrins display

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Tai, Xi Shi. "Synthesis, Photoluminescence and Surface Analysis of Bis(salicylicaldehyde-trimethylol amino methane)Zn(II)." Advanced Materials Research 322 (August 2011): 77–80. http://dx.doi.org/10.4028/www.scientific.net/amr.322.77.

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A new zinc (II) complex material [bis(salicylicaldehyde-trimethylol amino methane)Zn(II)] has been prepared and characterized by means of elemental analysis, IR spectra, molar conductivity and photoluminescence spectra. The results show that the O and N atoms interact with Zn atoms through coordination bonds. As a potential organic light-emitting material ( OLEDs), the surface electron state of zinc (II) complex material has been investigated using X-ray photoelectron spectroscopy (XPS) technology.

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Poddutoori, Prashanth Kumar, Premaladha Poddutoori, and Bhaskar G. Maiya. "Synthesis, spectroscopy and photochemistry of dyads and triads with porphyrins and bis(terpyridine)ruthenium(II) complex." Journal of Porphyrins and Phthalocyanines 10, no. 08 (2006): 1049–60. http://dx.doi.org/10.1142/s1088424606000405.

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A bis(terpyridine)ruthenium(II) complex ([Ru]2+) was covalently connected via a floppy - OCH 2 CH 2 O - spacer to the free-base porphyrin (H) or zinc(II) porphyrin (Zn) or both, to obtain dyads ([HRu]2+, [ZnRu]2+) and triads ([HRuH]2+, [ZnRuH]2+, [ZnRuZn]2+). These compounds have been fully characterized by MALDI, UV-vis, 1 H NMR (1D and 1 H -1 H COSY) spectroscopies, and also by the cyclic and differential pulse voltammetric techniques. Absorption spectroscopy of these newly synthesized compounds shows that significant exciton coupling exists in non-polar solvents (cyclohexane and toluene) be

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Wendelstorf, Carsten, Sabine Warzeska, Endre Kövári, and Roland Krämer. "Carboxy ester hydrolysis catalysed by a dinuclear, hexaazamacrocyclic zinc(II) complex. A model for zinc(II) aminopeptidases." J. Chem. Soc., Dalton Trans., no. 14 (1996): 3087–92. http://dx.doi.org/10.1039/dt9960003087.

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Okuno, Ryota, Minayo Yamaguchi, and Hideki Fujiwara. "A novel symmetric TTF-pyridyl thiolato zinc complex: synthesis, characterization and crystal structure analysis." Dalton Transactions 46, no. 15 (2017): 4912–16. http://dx.doi.org/10.1039/c7dt00468k.

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Tai, Xi Shi. "Synthesis, Structural Characterization and Luminescence Property of Ring-Like Zinc(II) Complex of N-Paratoluensulfonyl-Glycine Acid and 1,10-Phenanthroline." Advanced Materials Research 321 (August 2011): 127–30. http://dx.doi.org/10.4028/www.scientific.net/amr.321.127.

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A novel ring-like zinc (II) complex of N-paratoluensulfonyl-glycine acid and 1,10-phenanthroline was synthesized and characterized by elemental analysis, IR spectrum and molar conductivity. The crystal structure of Zn (II) was determined by X-ray single crystal diffraction. The results show that each zinc (II) atoms is in a distorted trigonal bipyramidal geometry and form 16-membered chelate ring with the tridentate ligand. Intermolecular weak interactions in complex link molecules into a one-dimensional infinite chain supramolecular structure. The luminescence property of the complex was inve

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