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Luigi Zanonato P, Di Bernardo P, Melchior A, Busato M, Tolazzi M. Lanthanides(III) and Silver(I) complex formation with triamines in DMSO: The effect of ligand cyclization. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119392] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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2
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Jiang W, Xu Q, Wei X. Use of cobalt(II) chelates of monothiol-containing ligands for the removal of nitric oxide. JOURNAL OF HAZARDOUS MATERIALS 2019; 374:50-57. [PMID: 30978630 DOI: 10.1016/j.jhazmat.2019.04.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 03/08/2019] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
It is first reported herein that cobalt(II) complexes solution of monothiol-containing multidentate ligands are used to remove low concentration of nitric oxide (NO). These chelating ligands are water-soluble amines, alcohols or acids which containing at least one -SH group, include those of cysteine, mercaptosuccinic acid, mercaptoethanesulfonate, mercaptopropionic acid and the like. These -SH compounds when coordinated with cobalt ions, forming complexes are very effective for NO removal. The results indicate that the side group (methyl, carboxyl, carboxymethyl) on α-carbon atom of ligands contribute to the denitration of the chelate solution, whereas the substituents on sulfur atom of ligands deactivate the complexation system. In addition, we have found that several monothiol compounds with simple molecule structure and low cost exhibit good performance in denitration, and some of cobalt thiol complexes are more valuable in removing NO than ferrous thiol complexes.
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Affiliation(s)
- Wei Jiang
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Qiang Xu
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xionghui Wei
- College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
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Thermodynamics of complex formation in dimethylsulfoxide: The case of Co(II) complexes with nitrogen donor ligands and their O2 adducts. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Selvan GT, Poomalai S, Ramasamy S, Selvakumar PM, Muthu Vijayan Enoch IV, Lanas SG, Melchior A. Differential Metal Ion Sensing by an Antipyrine Derivative in Aqueous and β-Cyclodextrin Media: Selectivity Tuning by β-Cyclodextrin. Anal Chem 2018; 90:13607-13615. [PMID: 30412380 DOI: 10.1021/acs.analchem.8b03810] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
β-Cyclodextrin (β-CD) is a nontoxic cyclic oligosachcharide that can encapsulate all or part of organic molecules of appropriate size and specific shape through noncovalent interaction. Herein, we report the influence of β-CD complex formation of an antipyrine derivative on its metal ion sensing behavior. In aqueous solution, the antipyrine shows a turn-on fluorescence sensing of vanadyl ion, and in cyclodextrin medium it senses aluminum ion. The compound shows an unusual fluorescence quenching on binding with β-cyclodextrin (log KSV = 2.34 ± 0.02). The differential metal ion sensing is due to the partial blocking of the chelating moiety by the cyclodextrin molecule. The structure of the antipyrine-cyclodextrin complex is optimized by two-dimensional rotating-frame Overhauser effect spectroscopy. The binding constant is determined by isothermal titration calorimetry (log K = 2.09 ± 0.004). The metal ion binding site is optimized by quanutm mechanical calculations. The lower limit of detection of vanadyl and aluminum ions, respectively, are 5 × 10-8 and 5 × 10-7 mol dm-3. This is the first report of selectivity of two different cations by a chemosensor in water and in β-CD.
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Affiliation(s)
| | - Sumathi Poomalai
- Department of Chemistry , Muthayammal College of Arts and Science , Namakkal District , Tamil Nadu , India
| | | | | | | | - Sara Gracia Lanas
- Polytechnic Department of Engineering, Chemistry Laboratories , University of Udine , via del Cotonificio 108 , 33100 Udine , Italy
| | - Andrea Melchior
- Polytechnic Department of Engineering, Chemistry Laboratories , University of Udine , via del Cotonificio 108 , 33100 Udine , Italy
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5
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Endrizzi F, Di Bernardo P, Zanonato PL, Tisato F, Porchia M, Ahmed Isse A, Melchior A, Tolazzi M. Cu(i) and Ag(i) complex formation with the hydrophilic phosphine 1,3,5-triaza-7-phosphadamantane in different ionic media. How to estimate the effect of a complexing medium. Dalton Trans 2018; 46:1455-1466. [PMID: 28074209 DOI: 10.1039/c6dt04221j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The complexes of Cu(i) and Ag(i) with 1,3,5-triaza-7-phosphadamantane (PTA) are currently studied for their potential clinical use as anticancer agents, given the cytotoxicity they exhibited in vitro towards a panel of several human tumor cell lines. These metallodrugs are prepared in the form of [M(PTA)4]+ (M = Cu+, Ag+) compounds and dissolved in physiological solution for their administration. However, the nature of the species involved in the cytotoxic activity of the compounds is often unknown. In the present work, the thermodynamics of formation of the complexes of Cu(i) and Ag(i) with PTA in aqueous solution is investigated by means of potentiometric, spectrophotometric and microcalorimetric methods. The results show that both metal(i) ions form up to four successive complexes with PTA. The formation of Ag(i) complexes is studied at 298.15 K in 0.1 M NaNO3 whereas the formation of the Cu(i) one is studied in 1 M NaCl, where Cu(i) is stabilized by the formation of three successive chloro-complexes. Therefore, for this latter system, conditional stability constants and thermodynamic data are obtained. To estimate the affinity of Cu(i) for PTA in the absence of chloride, Density Functional Theory (DFT) calculations have been done to obtain the stoichiometry and the relative stability of the possible Cu/PTA/Cl species. Results indicate that one chloride ion is involved in the formation of the first two complexes of Cu(i) ([CuCl(PTA)] and [CuCl(PTA)2]) whereas it is absent in the successive ones ([Cu(PTA)3]+ and [Cu(PTA)4]+). The combination of DFT results and thermodynamic experimental data has been used to estimate the stability constants of the four [Cu(PTA)n]+ (n = 1-4) complexes in an ideal non-complexing medium. The calculated stability constants are higher than the corresponding conditional values and show that PTA prefers Cu(i) to the Ag(i) ion. The approach used here to estimate the hidden role of chloride on the conditional stability constants of Cu(i) complexes may be applied to any Cu(i)/ligand system, provided that the stoichiometry of the species in NaCl solution is known. The speciation for the two systems shows that the [M(PTA)4]+ (M = Cu+, Ag+) complexes present in the metallodrugs are dissociated into lower stoichiometry species when diluted to the micromolar concentration range, typical of the in vitro biological testing. Accordingly, [Cu(PTA)2]+, [Cu(PTA)3]+ and [Ag(PTA)2]+ are predicted to be the species actually involved in the cytotoxic activity of these compounds.
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Affiliation(s)
- Francesco Endrizzi
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy. and Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Plinio Di Bernardo
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy.
| | - Pier Luigi Zanonato
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy.
| | | | | | - Abdirisak Ahmed Isse
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy.
| | - Andrea Melchior
- Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, Laboratori di Scienze e Tecnologie Chimiche, via Cotonificio 108, 33100 Udine, Italy
| | - Marilena Tolazzi
- Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, Laboratori di Scienze e Tecnologie Chimiche, via Cotonificio 108, 33100 Udine, Italy
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6
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Bensenane B, Asfari Z, Platas-Iglesias C, Esteban-Gómez D, Djafri F, Elhabiri M, Charbonnière LJ. Sulphur-rich functionalized calix[4]arenes for selective complexation of Hg2+ over Cu2+, Zn2+ and Cd2+. Dalton Trans 2016; 45:15211-15224. [DOI: 10.1039/c6dt02628a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ON–OFF fluorescent chemosensors based on sulphur-rich functionalized calix[4]arenes selectively bind Hg2+ over Cu2+, Zn2+ and Cd2+.
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Affiliation(s)
- Bachir Bensenane
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse (LIMAA)
- IPHC – UMR 7178 – CNRS
- ECPM
- Bât R1N0
- 67087 Strasbourg Cedex 02
| | - Zouhair Asfari
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse (LIMAA)
- IPHC – UMR 7178 – CNRS
- ECPM
- Bât R1N0
- 67087 Strasbourg Cedex 02
| | - Carlos Platas-Iglesias
- Universidade da Coruña
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química Fundamental
- Facultade de Ciencias
- Galicia
- Spain
| | - David Esteban-Gómez
- Universidade da Coruña
- Centro de Investigacións Científicas Avanzadas (CICA) and Departamento de Química Fundamental
- Facultade de Ciencias
- Galicia
- Spain
| | - Fatiha Djafri
- Laboratoire de Chimie des Matériaux
- Faculté des Sciences Exactes et Appliquées
- Université d'Oran1 Ahmed Ben Bella
- 31000 Oran
- Algeria
| | - Mourad Elhabiri
- Laboratoire de Chimie Bioorganique et Médicinale
- UMR 7509 – CNRS
- ECPM
- 67087 Strasbourg Cedex 02
- France
| | - Loïc J. Charbonnière
- Laboratoire d'Ingénierie Moléculaire Appliquée à l'Analyse (LIMAA)
- IPHC – UMR 7178 – CNRS
- ECPM
- Bât R1N0
- 67087 Strasbourg Cedex 02
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Manceau A, Lemouchi C, Rovezzi M, Lanson M, Glatzel P, Nagy KL, Gautier-Luneau I, Joly Y, Enescu M. Structure, Bonding, and Stability of Mercury Complexes with Thiolate and Thioether Ligands from High-Resolution XANES Spectroscopy and First-Principles Calculations. Inorg Chem 2015; 54:11776-91. [DOI: 10.1021/acs.inorgchem.5b01932] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | - Mauro Rovezzi
- European Synchrotron Radiation Facility (ESRF), 71 Rue des Martyrs, 38000 Grenoble, France
| | | | - Pieter Glatzel
- European Synchrotron Radiation Facility (ESRF), 71 Rue des Martyrs, 38000 Grenoble, France
| | - Kathryn L. Nagy
- Department of Earth and Environmental Sciences, University of Illinois at Chicago, MC-186, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | | | | | - Mironel Enescu
- Laboratoire
Chrono Environnement, Université de Franche-Comté, CNRS, 25030 Besançon, France
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Despotović I. Complexation of some alkali and alkaline earth metal cations by macrocyclic compounds containing four pyridine subunits – a DFT study. NEW J CHEM 2015. [DOI: 10.1039/c5nj00459d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Tetradentate pyridine-based macrocyclic compounds offer useful ligands capable of efficient and selective complexation of M = Li+, Na+, K+, Be2+, Mg2+and Ca2+.
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Affiliation(s)
- Ines Despotović
- Quantum Organic Chemistry Group
- Department of Organic Chemistry and Biochemistry
- Ruđer Bošković Institute
- Zagreb 10000
- Croatia
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