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New In Situ Catalysts Based on Nitro Functional Pyrazole Derivatives and Copper (II) Salts for Promoting Oxidation of Catechol to o-Quinone. Catalysts 2023. [DOI: 10.3390/catal13010162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Herein, new substituted ligands based on pyrazole (L1–L4) were synthesized via a one-step by condensing (1H-pyrazole-1-yl) methanol with different primary amine compounds. The present work utilized the catalytic properties of the in situ complexes formed by these ligands with various copper (II) salts viz. Cu(CH3COO)2, CuSO4, CuCl2, and Cu(NO3)2 for the oxidation of catechol to o-quinone. The studies showed that the catalytic activities depend on the nature and concentration of the ligand, the nature of the counterion, and the solvent. It was observed that the complex formed by L2 and Cu(CH3COO)2 exhibited good catalytic activity in methanol with Vmax of 41.67 µmol L−1 min−1 and Km of 0.02 mol L−1.
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Ganguly S, Bhunia P, Mayans J, Ghosh A. Trinuclear heterometallic CuII–MII (M = Mn and Co) complexes of N,O donor ligands with o-nitro benzoate anion: structures, magnetic properties and catalytic oxidase activities. Inorganica Chim Acta 2023. [DOI: 10.1016/j.ica.2023.121404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Ganguly S, Bhunia P, Mayans J, Ghosh A. Pentanuclear M II–Mn II (M = Ni and Cu) complexes of N 2O 2 donor ligands with a variation of carboxylate anions: syntheses, structures, magnetic properties and catecholase-like activities. NEW J CHEM 2022. [DOI: 10.1039/d2nj02215j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One NiII2MnII3 and two CuII2MnII3 complexes have been synthesized using N2O2 donor ligands. The former complex exhibits spin crossover at 2 K temperature. All the complexes exhibit catecholase-like activities.
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Affiliation(s)
- Sayantan Ganguly
- Department of Chemistry, University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, India
- Department of Chemistry, Taki Government College, Taki, Hasnabad, West Bengal 743429, India
| | - Pradip Bhunia
- Department of Chemistry, University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, India
| | - Júlia Mayans
- Departament de Química Inorgànica i Orgànica and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona (UB), Martí iFranqués 1-11, Barcelona 08028, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata 700 009, India
- Rani Rashmoni Green University, Tarakeswar, Hooghly 712410, West Bengal, India
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4
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Sarkar S, Kim M, Lee H. Catecholase Activities of Copper(
II
) Complexes With
N
4
Ligands. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Shuranjan Sarkar
- Department of Chemistry and Green‐Nano Research Center Kyungpook National University Daegu 41566 Republic of Korea
- Chemistry Division Bangladesh Jute Research Institute Dhaka 1207 Bangladesh
| | - Minyoung Kim
- Department of Chemistry and Green‐Nano Research Center Kyungpook National University Daegu 41566 Republic of Korea
| | - Hong‐In Lee
- Department of Chemistry and Green‐Nano Research Center Kyungpook National University Daegu 41566 Republic of Korea
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5
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Ganguly S, Mayans J, Ghosh A. Modulation of Nuclearity in Cu II -Mn II Complexes of a N 2 O 2 Donor Ligand Depending upon Carboxylate Anions: Structures, Magnetic Properties and Catalytic Oxidase Activities. Chem Asian J 2020; 15:4055-4069. [PMID: 32722886 DOI: 10.1002/asia.202000706] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/24/2020] [Indexed: 12/12/2022]
Abstract
Three new hetero-metallic copper(II)-manganese(II) complexes, [(CuL)2 Mn3 (C6 H5 CO2 )6 ] (1), [(CuL)2 Mn(CH3 CO2 )2 ] (2), and {[(CuL)2 Mn(C6 H5 CH2 CO2 )2 ] ⋅ 2CH3 CN} (3), have been synthesized using [CuL] as ''metalloligand'' (where H2 L=N,N'-bis(2-hydroxynaphthyl-methylidene)-1,3-propanediamine). Single-crystal structural analyses show an almost linear penta-nuclear structure for complex 1 where a square planar [CuL] unit is connected to each of the two terminal MnII ions of a linear, centrosymmetric [Mn3 (benzoate)6 ] unit through the double phenoxido bridges. Both complexes 2 and 3 possess a linear tri-nuclear structure where two terminal square-pyramidal [CuL] units are bonded to the central MnII ion through double phenoxido oxygen atoms along with a syn-syn bridging acetate (for 2)/phenyl acetate (for 3). All three complexes exhibit catecholase, and phenoxazinone synthase-like activities under aerial conditions. For catecholase like activity, the turnover numbers (kcat ) are 595, 40, and 205 h-1 whereas, for phenoxazinone synthase like activity, the turnover numbers are 25, 4, and 11 h-1 for complexes 1-3, respectively. The mechanism of both catalytic oxidase activities is proposed on the basis of mass spectral evidences. Variable-temperature (2-300 K) dc molar magnetic susceptibility measurements of 1 reveal antiferromagnetic interactions between the Cu-Mn centres (J1 =-29.3 cm-1 ), and also between the Mn-Mn centres of the [Mn3 (benzoate)6 ] unit (J2 =-0.68 cm-1 ). On increasing the magnetic field at 2 K, its ground spin state changes from S=3/2 to S=5/2 at 4 T, attributable to the low value of J2 which makes the excited spin states close in energy with the ground spin state. Complexes 2 and 3 show antiferromagnetic coupling interactions between the Cu-Mn pairs with J values of -9.51, and -5.32 cm-1 , respectively.
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Affiliation(s)
- Sayantan Ganguly
- Department of Chemistry, University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata, 700 009, India.,Department of Chemistry, Taki Government College, Taki, Hasnabad, West Bengal, 743429, India
| | - Júlia Mayans
- Instituto de Ciencia Molecular (ICMol), Universitat de València, c/ Catedrático José Beltrán 2, 46980 Paterna, València, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata, 700 009, India.,Rani Rashmoni Green University, Tarakeswar, Hooghly, 712419, West Bengal, India
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6
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Tuning the catecholase activity of bis(pyrazolyl)methane-based copper(II) complexes by substitutions of the ligand core: unraveling a dual O2/H2O2 oxidation mechanism. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119507] [Citation(s) in RCA: 3] [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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7
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Sarkar S, Lee HI. Synthesis, structure, magnetic properties, and catecholase-like activity of a phenoxo bridged dinuclear cobalt(II) complex. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Nehar OK, Mahboub R, Louhibi S, Roisnel T, Aissaoui M. New thiosemicarbazone Schiff base ligands: Synthesis, characterization, catecholase study and hemolytic activity. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127566] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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9
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The role of methyl and benzyl substituted dithiocarbazate of 2-acetyl pyridine for the formation of bridged dimeric and unbridged monomeric copper(II) complexes and catecholase mimetic activity of the complexes. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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10
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Sathya V, Murali M. Functional models for type-2 and type-3 copper oxidases: Self-assembled molecular association in [Cu(L)(Hdpa)](ClO4) determines the catalytic activity. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Characterizations of crystalline structure and catalytic activity of zwitterionic imidazole derivatives. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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12
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Functional mimics of type-2 and type-3 copper oxidases: Self-assembled molecular association in mononuclear copper(II) complex enhances the catalytic activity. INORG CHEM COMMUN 2018. [DOI: 10.1016/j.inoche.2018.04.003] [Citation(s) in RCA: 5] [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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13
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Das A, Bhattacharya K, Das LK, Giri S, Ghosh A. Mixed azido/phenoxido bridged trinuclear Cu(ii) complexes of Mannich bases: Synthesis, structures, magnetic properties and catalytic oxidase activities. Dalton Trans 2018; 47:9385-9399. [DOI: 10.1039/c8dt01400k] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Three mixed azido/phenoxido bridged trinuclear Cu(ii) complexes of tetradentate Mannich base ligands, synthesised by a metalloligand approach show antiferromagnetic coupling and significant catecholase and phenoxazinone synthase like activities.
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Affiliation(s)
- Avijit Das
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Kisholoy Bhattacharya
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Lakshmi Kanta Das
- Department of Chemistry
- Government General Degree College at Kharagpur-II
- Paschim Medinipur
- India
| | - Sanjib Giri
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
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Davidson RA, Hao J, Rheingold AL, Miller JS. Reprint of: High spin ground state copper(II) and nickel(II) complexes possessing the 3,5-di-tert-butyl-1,2-semiquinonate radical anion. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Davidson RA, Hao J, Rheingold AL, Miller JS. High spin ground state copper(II) and nickel(II) complexes possessing the 3,5-di-tert-butyl-1,2-semiquinonate radical anion. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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16
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Gülzow J, Hörner G, Strauch P, Stritt A, Irran E, Grohmann A. Oxygen Delivery as a Limiting Factor in Modelling Dicopper(II) Oxidase Reactivity. Chemistry 2017; 23:7009-7023. [PMID: 28094884 DOI: 10.1002/chem.201605868] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Indexed: 11/10/2022]
Abstract
Deprotonation of ligand-appended alkoxyl groups in mononuclear copper(II) complexes of N,O ligands L1 and L2 , gave dinuclear complexes sharing symmetrical Cu2 O2 cores. Molecular structures of these mono- and binuclear complexes have been characterized by XRD, and their electronic structures by UV/Vis, 1 H NMR, EPR and DFT; moreover, catalytic performance as models of catechol oxidase was studied. The binuclear complexes with anti-ferromagnetically coupled copper(II) centers are moderately active in quinone formation from 3,5-di-tert-butyl-catechol under the established conditions of oxygen saturation, but are strongly activated when additional dioxygen is administered during catalytic turnover. This unforeseen and unprecedented effect is attributed to increased maximum reaction rates vmax , whereas the substrate affinity KM remains unaffected. Oxygen administration is capable of (partially) removing limitations to turnover caused by product inhibition. Because product inhibition is generally accepted to be a major limitation of catechol oxidase models, we think that our observations will be applicable more widely.
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Affiliation(s)
- Jana Gülzow
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Gerald Hörner
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Peter Strauch
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476, Potsdam-Golm, Germany
| | - Anika Stritt
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Elisabeth Irran
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Andreas Grohmann
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
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