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Selvakumaran B, Murali M, Shanmugavadivel S, Sindhuja V, Sathya V. Impressive promiscuous biomimetic models of ascorbate, amine, and catechol oxidases. J Inorg Biochem 2024; 259:112671. [PMID: 39059176 DOI: 10.1016/j.jinorgbio.2024.112671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 07/14/2024] [Accepted: 07/21/2024] [Indexed: 07/28/2024]
Abstract
Copper metalloenzymes ascorbate oxidase (AOase), amine oxidase (AmOase), and catechol oxidase (COase) possess copper(II) sites of coordination, which are trimeric, homodimeric, and dimeric, respectively. Two newly mononuclear copper(II) complexes, namely, [Cu(L)(bpy)](ClO4) (1) and [Cu(L)(phen)](ClO4) (2) where HL = Schiff base, have been synthesized. UV-visible, EPR and single-crystal X-ray diffraction examinations were used to validate the geometry in solution and solid state. For complex 1, the metal exhibits a coordination sphere between square pyramidal and trigonal bipyramidal geometry (τ, 0.49). A positive CuII/I redox potential indicates a stable switching between CuII and CuI redox states. Despite the monomeric origin, both homogeneous catalysts (1 or 2) in MeOH were found to favor three distinct chemical transformations, namely, ascorbic acid (H2A) to dehydroascorbic acid (DA), benzylamine (Ph-CH2-NH2) to benzaldehyde (Ph-CHO), and 3,5-di-tert-butylcatechol (3,5-DTBC) to 3,5-di-tert-butylquinone (3,5-DTBQ) [kcat: AOase, 9.6 (1) or 2.0 × 106 h-1(2); AmOase, 13.4 (1) or 9.4 × 106 h-1 (2); COase, 2.0 (1) or 1.9 × 103 h-1 (2)]. They exhibit higher levels of AOase activity as indicated by their kcat values compared to the AOase enzyme. The kcat values for COase activity in buffer solution [5.93 (1) or 2.95 × 105 h-1 (2)] are one order lower than those of the enzymes. This is because of the labile nature of the coordinated donor, the flexibility of the ligand, the simplicity of the catalyst-substrate interaction, and the positive CuII/I redox potential. Interestingly, more efficient catalysis is promoted by 1 and 2 concerning that of other mono- and dicopper(II) complexes.
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Affiliation(s)
- Balasubramaniam Selvakumaran
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
| | - Mariappan Murali
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India.
| | - Selvaraj Shanmugavadivel
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
| | - Venkatesan Sindhuja
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
| | - Velusamy Sathya
- Coordination and Bioinorganic Chemistry Research Laboratory, Department of Chemistry, National College (Autonomous), Tiruchirappalli 620 001, Tamil Nadu, India
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2
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Jana NC, Sun YC, Herchel R, Nandy R, Brandão P, Bagh B, Wang XY, Panja A. Chemical fixation of atmospheric CO 2 in tricopper(II)-carbonato complexes with tetradentate N-donor ligands: reactive intermediates, probable mechanisms, and catalytic and magneto-structural studies. Dalton Trans 2024; 53:11514-11530. [PMID: 38916290 DOI: 10.1039/d4dt00503a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
In the present era, the fixation of atmospheric CO2 is of significant importance and plays a crucial role in maintaining the balance of carbon and energy flow within ecosystems. Generally, CO2 fixation is carried out by autotrophic organisms; however, the scientific community has paid substantial attention to execute this process in laboratory. In this report, we synthesized two carbonato-bridged trinuclear copper(II) complexes, [Cu3(L1)3(μ3-CO3)](ClO4)3 (1) and [Cu3(L2)3(μ3-CO3)](ClO4)3 (2) via atmospheric fixation of CO2 starting with Cu(ClO4)2·6H2O and easily accessible pyridine/pyrazine-based N4 donor Schiff base ligands L1 and L2, respectively. Under very similar reaction conditions, the ligand framework embedded with the phenolate moiety (HL3) fails to do so because of the reduction of the Lewis acidity of the metal center, inhibiting the formation of a reactive hydroxide bound copper(II) species, which is required for the fixation of atmospheric CO2. X-ray crystal structures display that carbonate-oxygen atoms bridge three copper(II) centers in μ3syn-anti disposition in 1 and 2, whereas [Cu(HL3)(ClO4)] (3) is a mononuclear complex. Interestingly, we also isolated an important intermediate of atmospheric CO2 fixation and structurally characterized it as an anti-anti μ2 carbonato-bridged dinuclear copper(II) complex, [Cu2(L2)2(μ2-CO3)](ClO4)2·MeOH (2-I), providing an in-depth understanding of CO2 fixation in these systems. Variable temperature magnetic susceptibility measurement suggests ferromagnetic interactions between the metal centers in both 1 and 2, and the results have been further supported by DFT calculations. The catalytic efficiency of our synthesized complexes 1-3 was checked by means of catechol oxidase and phenoxazinone synthase-like activities. While complexes 1 and 2 showed oxidase-like activity for aerobic oxidation of o-aminophenol and 3,5-di-tert-butylcatechol, complex 3 was found to be feebly active. ESI mass spectrometry revealed that the oxidation reaction proceeds through the formation of complex-substrate intermediations and was further substantiated by DFT calculations. Moreover, active catalysts 1 and 2 were effectively utilized for the base-free oxidation of benzylic alcohols in the presence of air as a green and sustainable oxidant and catalytic amount of TEMPO in acetonitrile. Various substituted benzylic alcohols smoothly converted to their corresponding aldehydes under very mild conditions and ambient temperature. The present catalytic protocol showcases its environmental sustainability by producing minimal waste.
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Affiliation(s)
- Narayan Ch Jana
- Department of Chemistry, Panskura Banamali College, Panskura RS, WB 721152, India.
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), P. O. - Bhimpur-Padanpur, Dist. - Khurda, Jatni - 752050, Odisha, India
| | - Yu-Chen Sun
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Radovan Herchel
- Department of Inorganic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 77146 Olomouc, Czech Republic
| | - Rakhi Nandy
- Department of Chemistry, Gokhale Memorial Girls' College, 1/1 Harish Mukherjee Road, Kolkata 700020, India
| | - Paula Brandão
- Department of Chemistry, CICECO-Aveiro Institute of Materials, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Bidraha Bagh
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), P. O. - Bhimpur-Padanpur, Dist. - Khurda, Jatni - 752050, Odisha, India
| | - Xin-Yi Wang
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Anangamohan Panja
- Department of Chemistry, Panskura Banamali College, Panskura RS, WB 721152, India.
- Department of Chemistry, Gokhale Memorial Girls' College, 1/1 Harish Mukherjee Road, Kolkata 700020, India
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3
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Synthesis, Structure and Catechol Oxidase Activity of Mono Nuclear Cu(II) Complex with Phenol-Based Chelating Agent with N, N, O Donor Sites. CRYSTALS 2022. [DOI: 10.3390/cryst12040511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A square-planar Cu(II) complex [Cu(L)Cl], 1, with sterically constrained tridentate phenol-based ligand (HL= N,N,N′-trimethyl-N′-(2-hydroxy-3,5-di-tert-butylbenzyl)-ethylenediamine) with N, N, O donor sites has been synthesized. The complex is characterized by single crystal X-ray diffraction study as well as other spectroscopic techniques. The reported complex crystallizes in monoclinic space group C2/c with a = 30.248(6), b = 13.750(3) and c = 11.410(2) Å with β = 110.232(2)°. The Cu(II) ion adopts a square planar environment in this complex. Electrochemical study of the complex 1 gives quasi-reversible reductive response at E1/2 ≈ −0.5 V due to the reduction of the Cu(II) center along with a reversible oxidation peak at E1/2 ≈ 0.75 V. The oxidation peak arises due to the ligand-based oxidation of phenolate group to phenoxyl radical in the complex. The Cu(II) complex exhibits catechol oxidase activity in methanol as observed by the UV–vis spectroscopy of the aerial oxidation of 3,5-DTBC to 3,5-DTBQ and the reaction proceeds via the formation of ligand phenoxyl radical. The turnover number for complex 1 is 2560 h−1.
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4
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Thio Y, Vittal JJ. Catecholase-like activity in 2D MOFs: Oxidation of 3,5-DTBC by two Cu(II) 2D MOFs of reduced Schiff base ligands. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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5
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Mukherjee D, Nag P, Shteinman AA, Vennapusa SR, Mandal U, Mitra M. Catechol oxidation promoted by bridging phenoxo moieties in a bis(μ-phenoxo)-bridged dicopper(ii) complex. RSC Adv 2021; 11:22951-22959. [PMID: 35480461 PMCID: PMC9034335 DOI: 10.1039/d1ra02787e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 06/16/2021] [Indexed: 11/21/2022] Open
Abstract
A dinuclear copper(ii) complex [Cu2(papy)2(CH3OH)2] has been synthesized by reaction of one equiv. of Cu(OAc)2·2H2O with one equiv. of the tetradentate tripodal ligand H2papy [N-(2-hydroxybenzyl)-N-(2-picolyl)glycine] and has been characterized by various spectroscopic techniques and its solid state structure has been confirmed by X-ray crystal structure analysis. The single-crystal structure of the complex reveals that the two copper centers are hexa-coordinated and bridged by two O-atoms of the phenoxo moieties. The variable temperature magnetic susceptibility measurement of the complex reveals weak ferromagnetic interactions among the Cu(ii) ions with a J value of 1.1 cm−1. The catecholase activity of the complex has been investigated spectrophotometrically using 3,5-di-tert-butyl catechol as a model substrate in methanol solvent under aerobic conditions. The Michaelis–Menten kinetic treatment has been applied using different excess substrate concentrations. The parameters obtained from the catecholase activity by the complex are KM 2.97 × 10−4 M, Vmax 2 × 10−4 M s−1, and kcat 7.2 × 103 h−1. A reaction mechanism has been proposed based on experimental findings and theoretical calculations. The catechol substrate binds to dicopper(ii) centers and subsequently two electrons are transferred to the metal centers from the substrate. The bridging phenoxo moieties participate as a Brønsted base by accepting protons from catechol during the catalytic cycle and thereby facilitating the catechol oxidation process. A bis(μ-phenoxo)-bridged dicopper(ii) complex capable of oxidizing catechol with the highest efficiency amongst any bis(μ-phenoxo)-bridged dicopper(ii) complexes is reported.![]()
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Affiliation(s)
- Debojyoti Mukherjee
- Department of Chemistry, University of Burdwan Golapbug Campus, Purba Bardhaman-713104 India
| | - Probal Nag
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM) Maruthamala P. O., Vithura Thiruvananthapuram-695551 Kerala India
| | - Albert A Shteinman
- Institute of Problems of Chemical Physics 142432 Chernogolovka, Moscow district Russian Federation
| | - Sivaranjana Reddy Vennapusa
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram (IISER TVM) Maruthamala P. O., Vithura Thiruvananthapuram-695551 Kerala India
| | - Ujjwal Mandal
- Department of Chemistry, University of Burdwan Golapbug Campus, Purba Bardhaman-713104 India
| | - Mainak Mitra
- Department of Chemistry, Burdwan Raj College Aftab Avenue, Purba Bardhaman-713104 India
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6
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Luo H, Yang RG, Chen ZH, Zhong GQ. A novel homodinuclear ternary coordination polymer of nickel(II) based on two rigid ligands: Solvothermal synthesis, crystal structure, luminescent and magnetic properties. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121587] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Mononuclear Mn(III) complex with sterically constrained phenol-based ligand: Synthesis, structure and catecholase activity. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128723] [Citation(s) in RCA: 1] [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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8
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Ta S, Ghosh M, Salam N, Das J, Islam M, Brandão P, Félix V, Sanmartin J, Das D. X‐ray structurally characterized Mo (VI), Fe (III) and Cu (II) complexes of amide‐imine conjugate: (bio)catalytic and histidine recognition studies. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Sabyasachi Ta
- Department of Chemistry The University of Burdwan 713104, W Burdwan B India
| | - Milan Ghosh
- Department of Chemistry The University of Burdwan 713104, W Burdwan B India
| | - Noor Salam
- Department of Chemistry The University of Burdwan 713104, W Burdwan B India
| | - Jayanta Das
- Department of Chemistry The University of Burdwan 713104, W Burdwan B India
| | - Manirul Islam
- Department of Chemistry University of Kalyani Kalyani Nadia 741235 India
| | - Paula Brandão
- CICECO – Aveiro Institute of Materials, Department of Chemistry University of Aveiro Aveiro 3810‐193 Portugal
| | - Vítor Félix
- CICECO – Aveiro Institute of Materials, Department of Chemistry University of Aveiro Aveiro 3810‐193 Portugal
| | - Jesus Sanmartin
- Departamento de Química Inorgánica Facultad de Química, Avda Das Ciencias s/n Santiago de Compostela 15782 Spain
| | - Debasis Das
- Department of Chemistry The University of Burdwan 713104, W Burdwan B India
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9
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Biswas BK, Saha S, Biswas N, Chowdhury M, Frontera A, Rizzoli C, Roy Choudhury R, Roy Choudhury C. Two copper (II) complexes derived from anthranilic acid and 4-iodo-anthranilic acid Schiff bases: Structural elucidation, halogen bonding interactions and catalytic study using 3,5-DTBC. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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10
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Ali I, Mandal B, Saha R, Ghosh R, Chandra Majee M, Mondal D, Mitra P, Mandal D. Mono and tri-nuclear cobalt(III) complexes with sterically constrained phenol based N2O2 ligand: Synthesis, structure and catechol oxidase activity. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Synthesis, structure, Hirshfeld surface analysis and catecholase activity of Ni(II) complex with sterically constrained phenol based ligand. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127340] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Ahmed N, Tripathi S, Sarkar A, Ansari KU, Das C, Prajesh N, Horike S, Boomishankar R, Shanmugam M. Chiral tetranuclear copper( ii) complexes: synthesis, optical and magnetic properties. NEW J CHEM 2020. [DOI: 10.1039/d0nj02856h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The chiral tetranuclear Cu(ii) cubane complexes with the general molecular formula [Cu4(R-L1)4] (R-1) and [Cu4(S-L1)4] (S-1) exhibit ferromagnetic exchange coupling, which is in contrast to the literature reports. This is corroborated by theoretical calculations.
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Affiliation(s)
- Naushad Ahmed
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Shalini Tripathi
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Arup Sarkar
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Kamal Uddin Ansari
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai-400076
- India
| | - Chinmoy Das
- AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL)
- National Institute of Advanced Industrial Science and Technology (AIST)
- Yoshida-Honmachi
- Kyoto 606-8501
- Japan
| | - Neetu Prajesh
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune, Dr Homi Bhabha Road
- Pune-411008
- India
| | - Satoshi Horike
- AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL)
- National Institute of Advanced Industrial Science and Technology (AIST)
- Yoshida-Honmachi
- Kyoto 606-8501
- Japan
| | - Ramamoorthy Boomishankar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Pune, Dr Homi Bhabha Road
- Pune-411008
- India
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13
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Synthesis, structure, DFT study and catechol oxidase activity of Cu(II) complex with sterically constrained phenol based ligand. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.110] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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14
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Liu X, Du L, Wang Y, Li R, Feng X, Ding Y. Synthesis, crystal structures and properties of two nickel (II) complexes with different nitrogen-heterocyclic polycarboxylate ligand. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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15
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Kumari B, Adhikari S, Matalobos JS, Das D. Cu(II) and Co(II) complexes of benzimidazole derivative: Structures, catecholase like activities and interaction studies with hydrogen peroxide. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Alkoxo- and carboxylato-bridged hexanuclear copper(II) complex: Synthesis, structure and magnetic properties. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.06.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Anion-induced exchange interactions in binuclear complexes of Cu(II) with flexible hexadentate bispicolylamidrazone ligands. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.08.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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18
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Huang JJ, Zhang X, Huo QS, Yu JH, Xu JQ. 3,5-Bis((4′-carboxylbenzyl)oxy)benzoilate-based coordination polymers: their synthesis, structural characterization, and sensing properties. Inorg Chem Front 2016. [DOI: 10.1039/c5qi00241a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The structural characterization of four 3,5-bis((4′-carboxylbenzyl)oxy)benzoilate-based coordination polymers has been reported, and the sensing ability of 2 and 4 on NB has been investigated.
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Affiliation(s)
- Jing-Jing Huang
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun
- China
| | - Xiao Zhang
- State Key Lab of Urban Water Resource and Environment (SKLUWRE) & Academy of Fundamental and Interdisciplinary Science
- Harbin Institute of Technology
- Harbin
- China
| | - Qi-Sheng Huo
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun
- China
| | - Jie-Hui Yu
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun
- China
| | - Ji-Qing Xu
- College of Chemistry
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry
- Jilin University
- Changchun
- China
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19
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Adhikari S, Lohar S, Kumari B, Banerjee A, Bandopadhyay R, Matalobos JS, Das D. Cu(ii) complex of a new isoindole derivative: structure, catecholase like activity, antimicrobial properties and bio-molecular interactions. NEW J CHEM 2016. [DOI: 10.1039/c6nj02193j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An isoindole based trigonal bipyramidal Cu(ii) complex shows catecholase and antimicrobial activities. It interacts with bio-relevant antipyrine derivative.
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Affiliation(s)
| | - Sisir Lohar
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | - Babli Kumari
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
| | | | | | - Jesús Sanmartín Matalobos
- Departamento de QuimicaInorganica
- Facultade de Quimica
- Avda. Das Ciencias s/n
- 15782 Santiago de Compostela
- Spain
| | - Debasis Das
- Department of Chemistry
- The University of Burdwan
- Burdwan
- India
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