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Zhang N, Zhang Y, Liu Z, Liu Z, Sun C, Altun NE, Kou J. Investigation on Gold Dissolution Performance and Mechanism in Imidazolium Cyanate Ionic Liquids. Molecules 2024; 29:897. [PMID: 38398648 PMCID: PMC10891921 DOI: 10.3390/molecules29040897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/13/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
To explore green gold leaching reagents, a series of imidazolium cyanate ionic liquids (ILs), 1-ethyl-3-methyl-imidazolium cyanate ([C2MIM][OCN]), 1-propyl-3-methyl-imidazolium cyanate ([C3MIM][OCN]) and 1-butyl-3-methyl-imidazolcyanate ([C4MIM][OCN]) were synthesized and characterized by Nuclear Magnetic Resonance (NMR), Fourier Transform Infrared Spectroscopy (FTIR) and thermogravimetric (TG) analysis. In this research, the imidazolium cyanates were utilized as a solute, which not only decreased the usage of ILs but also increased their gold dissolution capability. The gold dissolution performances of three imidazolium cyanates were characterized by dynamic leaching test and Scanning Electron Microscopy (SEM). The results show that the all three imidazolium cyanates had a gold dissolution ability, and the shorter the carbon chain on the imidazole ring in imidazolium cyanate, the faster the gold dissolution rate. The gold dissolution performance of [C2MIM][OCN] was the best, and the weight loss of gold leaf was 2.9 mg/cm2 at 40 °C after 120 h dissolution in [C2MIM][OCN] mixed with 10 wt. % water. Besides this, the gold dissolution rate increased with the increase in the concentration of imidazolium cyanates as well as the reaction temperature. The gold dissolution performances of imidazolium cyanates in different solvents including water, acetonitrile, dimethyl sulfoxide (DMSO) and dimethylformamide (DMF) were also investigated, and the weaker the polarity of the solvent, the more conducive it was to the gold dissolution reaction. The mechanism of gold dissolution by imidazolium cyanates was investigated through NMR spectroscopy and Electrospray Ionization Mass Spectrometry (ESI-MS). It was inferred that during the process of gold dissolution, Au was oxidized to Au+ and the imidazolium cations were deprotonated to form N-heterocyclic carbenes, which coordinated with gold to form gold complexes and achieve gold dissolution.
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Affiliation(s)
- Na Zhang
- School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Yuxin Zhang
- School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zhengyu Liu
- School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Ziyuan Liu
- School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Chunbao Sun
- School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - N. Emre Altun
- Department of Mining Engineering, Middle East Technical University, Ankara 06800, Türkiye
| | - Jue Kou
- School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Huerfano IJ, Laskowski CA, Pink M, Carta V, Hillhouse GL, Caulton KG, Smith JM. Redox-Neutral Transformations of Carbon Dioxide Using Coordinatively Unsaturated Late Metal Silyl Amide Complexes. Inorg Chem 2022; 61:20986-20993. [PMID: 36516978 DOI: 10.1021/acs.inorgchem.2c03453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Two-coordinate silylamido complexes of nickel and copper rapidly react with CO2 to selectively form a new cyanate ligand along with hexamethyldisiloxane byproducts. Mechanistic insight into these reactions was obtained from the synthesis of proposed intermediates, several silyl- and phenyl- substituted amido analogues, and their subsequent reactivity with CO2. These studies suggest that a unique intramolecular double silyl transfer step facilitates CO2 deoxygenation, which likely contributes to the rapid rates of reaction. The deoxygenation reactions create a platform for a synthetic cycle in which copper amido complexes convert CO2 to organic silylcarbamates.
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Affiliation(s)
- I J Huerfano
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Carl A Laskowski
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Maren Pink
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Veronica Carta
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Gregory L Hillhouse
- Department of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
| | - Kenneth G Caulton
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Jeremy M Smith
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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Grant LN, Mindiola DJ. The Rise of Phosphaethynolate Chemistry in Early Transition Metals, Actinides, and Rare‐Earth Complexes. Chemistry 2019; 25:16171-16178. [DOI: 10.1002/chem.201902871] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Lauren N. Grant
- Department of Chemistry University of Pennsylvania Philadelphia PA 19104 USA
| | - Daniel J. Mindiola
- Department of Chemistry University of Pennsylvania Philadelphia PA 19104 USA
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Lim IT, Park JH, Choi KY, Kim CH, Choi YM. Preparation, characterization and crystal structures of metal(II) tetraza macrocyclic complexes with organic co-ligands. TRANSIT METAL CHEM 2018. [DOI: 10.1007/s11243-018-0220-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Derrick JS, Lee J, Lee SJC, Kim Y, Nam E, Tak H, Kang J, Lee M, Kim SH, Park K, Cho J, Lim MH. Mechanistic Insights into Tunable Metal-Mediated Hydrolysis of Amyloid-β Peptides. J Am Chem Soc 2017; 139:2234-2244. [PMID: 28098992 DOI: 10.1021/jacs.6b09681] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An amyloidogenic peptide, amyloid-β (Aβ), has been implicated as a contributor to the neurotoxicity of Alzheimer's disease (AD) that continues to present a major socioeconomic burden for our society. Recently, the use of metal complexes capable of cleaving peptides has arisen as an efficient tactic for amyloid management; unfortunately, little has been reported to pursue this strategy. Herein, we report a novel approach to validate the hydrolytic cleavage of divalent metal complexes toward two major isoforms of Aβ (Aβ40 and Aβ42) and tune their proteolytic activity based on the choice of metal centers (M = Co, Ni, Cu, and Zn) which could be correlated to their anti-amyloidogenic properties. Such metal-dependent tunability was facilitated employing a tetra-N-methylated cyclam (TMC) ligand that imparts unique geometric and stereochemical control, which has not been available in previous systems. Co(II)(TMC) was identified to noticeably cleave Aβ peptides and control their aggregation, reporting the first Co(II) complex for such reactivities to the best of our knowledge. Through detailed mechanistic investigations by biochemical, spectroscopic, mass spectrometric, and computational studies, the critical importance of the coordination environment and acidity of the aqua-bound complexes in promoting amide hydrolysis was verified. The biological applicability of Co(II)(TMC) was also illustrated via its potential blood-brain barrier permeability, relatively low cytotoxicity, regulatory capability against toxicity induced by both Aβ40 and Aβ42 in living cells, proteolytic activity with Aβ peptides under biologically relevant conditions, and inertness toward cleavage of structured proteins. Overall, our approaches and findings on reactivities of divalent metal complexes toward Aβ, along with the mechanistic insights, demonstrate the feasibility of utilizing such metal complexes for amyloid control.
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Affiliation(s)
- Jeffrey S Derrick
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919, Republic of Korea
| | - Jiwan Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
| | - Shin Jung C Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919, Republic of Korea
| | - Yujeong Kim
- Western Seoul Center, Korea Basic Science Institute (KBSI) , Seoul 03759, Republic of Korea.,Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Republic of Korea
| | - Eunju Nam
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919, Republic of Korea
| | - Hyeonwoo Tak
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST) , Daegu 42988, Republic of Korea
| | - Juhye Kang
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919, Republic of Korea
| | - Misun Lee
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919, Republic of Korea
| | - Sun Hee Kim
- Western Seoul Center, Korea Basic Science Institute (KBSI) , Seoul 03759, Republic of Korea.,Department of Chemistry and Nano Science, Ewha Womans University , Seoul 03760, Republic of Korea
| | - Kiyoung Park
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141, Republic of Korea
| | - Jaeheung Cho
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST) , Daegu 42988, Republic of Korea
| | - Mi Hee Lim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919, Republic of Korea
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Synthesis and structural characterization of nickel(II) complexes of 3,14-diethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane with inorganic salts. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.07.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Lim IT, Choi KY. Self-assembly of a 1D hydrogen-bonded polymer from a hexamethyltetraaza macrocyclic nickel(II) complex and isophthalic acid. Molecules 2013; 18:6608-19. [PMID: 23743887 PMCID: PMC6270525 DOI: 10.3390/molecules18066608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 05/31/2013] [Accepted: 06/03/2013] [Indexed: 11/16/2022] Open
Abstract
The compound [Ni(L)(isoph)2][Ni(L)]·8H2O (1; L = C-meso-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane; H2-isoph = isophthalic acid) has been synthesized and structurally characterized. Complex 1 exhibits a geometrically symmetric core with a {4/6} coordination number set. The coordination environment around the Ni(1) ion is a distorted octahedron, while the geometry around the four-coordinate Ni(2) is depicted as square planar in 1D hydrogen-bonded infinite chain. The compound crystallizes in the triclinic system P-1 with a = 8.602(2), b = 10.684(7), c = 16.550(3) Å, α = 91.04(4), β = 94.09(2), γ = 111.09(4)°, V = 1413.9(10) Å3, Z = 1. The cyclic voltammogram of 1 undergoes one-electron wave corresponding to NiII/NiI process. The electronic spectra, electrochemical and TGA behavior of the complex are significantly affected by the nature of the hexamethyltetraaza macrocycle and the axial isoph2− ligand.
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Affiliation(s)
| | - Ki-Young Choi
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +82-41-850-8284; Fax: +82-850-8347
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Synthesis and characterization of hexamethy tetraaza macrocyclic nickel(II) complexes with polycarboxylate ligands. Polyhedron 2012. [DOI: 10.1016/j.poly.2011.12.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Janikowski J, Forsyth C, MacFarlane DR, Pringle JM. Novel ionic liquids and plastic crystals utilizing the cyanate anion. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm14055h] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nishigaki J, Matsumoto T, Tatsumi K. Coordination of Coenzyme M and Its Derivatives on Ni
II
(tetraazacycle) Complexes: A Model for the Active Site of Methyl Coenzyme M Reductase. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000801] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jun‐ichi Nishigaki
- Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Furo‐cho, Chikusa‐ku, Nagoya 464‐8602, Japan, Fax: +81‐52‐789‐2943
| | - Tsuyoshi Matsumoto
- Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Furo‐cho, Chikusa‐ku, Nagoya 464‐8602, Japan, Fax: +81‐52‐789‐2943
| | - Kazuyuki Tatsumi
- Research Center for Materials Science and Department of Chemistry, Graduate School of Science, Nagoya University, Furo‐cho, Chikusa‐ku, Nagoya 464‐8602, Japan, Fax: +81‐52‐789‐2943
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Choi KY, Kim KJ. Self-assembly of 1D coordination polymers from nickel(II) tetraaza macrocycle and carboxylate ligands. Polyhedron 2008. [DOI: 10.1016/j.poly.2007.12.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Choi KY, Lee HK, Ryu H. Synthesis and properties of cobalt(III) complexes of 3,14-dimethyl-2,6,13,17-tetraazatricyclo[14,4,01.18,07.12]docosane. Polyhedron 2007. [DOI: 10.1016/j.poly.2006.12.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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Zhu X, Zhang YM, Li BL, Zhang Y. Syntheses and structures of three new coordination polymers with the flexible 1,2-bis(1,2,4-triazol-1-yl)ethane ligand. J COORD CHEM 2006. [DOI: 10.1080/00958970500358672] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Xia Zhu
- a College of Chemistry and Chemical Engineering , Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou University , Suzhou 215123, P.R. China
- b Science College , Civil Aviation University of China , Tianjin, 300300, P.R. China
| | - Yu-Mei Zhang
- a College of Chemistry and Chemical Engineering , Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou University , Suzhou 215123, P.R. China
| | - Bao-Long Li
- a College of Chemistry and Chemical Engineering , Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou University , Suzhou 215123, P.R. China
- c State Key Laboratory of Coordination Chemistry , Nanjing University , Nanjing 210093, P.R. China
| | - Yong Zhang
- a College of Chemistry and Chemical Engineering , Key Laboratory of Organic Synthesis of Jiangsu Province, Suzhou University , Suzhou 215123, P.R. China
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Choi KY, Lee KC, Lee HH, Suh M, Kim MJ, Kwon Kang S. Synthesis, structural characterization of nickel(II) hexaazamacrotetracyclic complexes with azido, isocyanato and nitrito ligands. J Mol Struct 2005. [DOI: 10.1016/j.molstruc.2005.05.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Clemente DA. A study of the 8466 structures reported in Inorganica Chimica Acta: 52 space group changes and their chemical consequences. Inorganica Chim Acta 2005. [DOI: 10.1016/j.ica.2004.10.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Choi KY, Whang MA, Lee HH, Lee KC, Kim MJ. Synthesis and characterization of copper(II) hexaazamacrotetracyclic complexes containing organic ligands. TRANSIT METAL CHEM 2004. [DOI: 10.1007/s11243-004-9174-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fairlie DP, Turner M, Byriel KA, McKeon JA, Jackson W. Facile and stereoselective condensation of acetone with ammonia ligands on cobalt(III): structure of a N-bonded cyanate complex containing the 2-methyl-2-amino-4-imino-pentane ligand. Inorganica Chim Acta 1999. [DOI: 10.1016/s0020-1693(99)00110-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Choi KY, Kim YJ, Ryu H, Suh IH. Synthesis and characterization of nickel(II) complexes of a tetraaza macrocycle containing axial ligands. INORG CHEM COMMUN 1999. [DOI: 10.1016/s1387-7003(99)00041-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Choi KY, Chun KM, Suh IH. Synthesis and characterization of a macrocyclic nitritotetraamine nickel(II) complex. INORG CHEM COMMUN 1999. [DOI: 10.1016/s1387-7003(99)00052-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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