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Shukla A, Jha VK, Chatterjee S. Non-trivial ground and excited state photophysics of a substituted phenol. Phys Chem Chem Phys 2024; 26:6655-6666. [PMID: 37975741 DOI: 10.1039/d3cp04570f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
5-(tert-Butyl)-2-hydroxy-1,3-isophthalaldehyde (5-tBHI) shows solvent dependent single or dual emission. The photophysics of 5-tBHI has been studied in a variety of solvents and the results were compared with that of the methyl derivative of the probe as well as the 5-tBHI anion. It has been found that the intramolecular H-bonded conformer of 5-tBHI predominantly exists in non-polar solvents, and undergoes facile excited state intramolecular proton transfer (ESIPT). On the other hand, a dynamic equilibrium can be found in polar, protic solvents, even in the ground state, except in water. NMR analyses confirm the loss of aromaticity of the probe in the ground state via anion formation, in equilibrium with the solvent mediated intermolecularly H-bonded state, in neat polar protic solvents like methanol. The proton transfer process, either intramolecularly or intermolecularly, was found to be of the order of 1 ps, and even faster than the instrumental resolution in the case of water. The current finding provides important insights on the photophysics of this small, substituted phenol.
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Affiliation(s)
- Aparna Shukla
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad 826004, Jharkhand, India.
| | - Vikas Kumar Jha
- Discipline of Chemistry, School of Chemical and Material Sciences, Department of Chemistry, Indian Institute of Technology Goa, Ponda, Goa 403401, India
| | - Soumit Chatterjee
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad 826004, Jharkhand, India.
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2
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Bouroumane N, El Boutaybi M, El Kodadi M, Touzani R, Oussaid A, Hammouti B, Abboud M. Synthesis of new heterocyclic ligands and study of the catecholase activity of catalysts based on copper(II). REACTION KINETICS MECHANISMS AND CATALYSIS 2023. [DOI: 10.1007/s11144-023-02370-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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3
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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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4
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Das M, Das M, Ray S, Das UK, Laha S, Ray PP, Samanta BC, Maity T. Synthesis and crystal structures of two tri- and tetra-heterometallic Ni( ii)–Mn( ii)/Ni( ii)–Co( iii) complexes from two different Ni( ii)-containing metalloligands: effective catalytic oxidase activity and Schottky device approach. NEW J CHEM 2022. [DOI: 10.1039/d2nj03535a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The development of tri- and tetra-nuclear heterometallic Ni(ii)–Mn(ii)/Ni(ii)–Co(iii) complexes with effective catalytic oxidase activity and the Schottky device approach.
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Affiliation(s)
- Manik Das
- Department of Chemistry, Prabhat Kumar College, Contai, Contai, Purba Medinipur, West Bengal, India
| | - Mainak Das
- Department of Physics, Jadavpur University, Kolkata, India
| | - Subham Ray
- Department of Chemistry, Prabhat Kumar College, Contai, Contai, Purba Medinipur, West Bengal, India
| | - Uttam Kumar Das
- Department of Chemistry, School of Physical Sciences, Mahatma Gandhi Central University, Bihar, India
| | | | | | | | - Tithi Maity
- Department of Chemistry, Prabhat Kumar College, Contai, Contai, Purba Medinipur, West Bengal, India
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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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Shahid M, I . M, Khan S, Mehtab M, Yadav O, Ansari A, Qasem KM, Ahmed A, Saniya M, Akhtar MN, AlDamen MA. Elucidating the contribution of solvent on the catecholase activity in a mononuclear Cu(II) system: An experimental and theoretical approach. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130878] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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7
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Enamullah M, Al-moktadir Zaman M, Bindu MM, Woschko D, Islam MK, Janiak C. Pseudotetrahedral high-spin manganese(II)-complexes with (S or R)-N-1-(Ar)ethyl-salicylaldimine: Chiroptical property, chirality induction at-metal, paramagnetism, redox-potential, PXRD structures and DFT/TDDFT. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Ahmad MS, Khalid M, Khan MS, Shahid M, Ahmad M, Saeed H, Owais M, Ashafaq M. Tuning biological activity in dinuclear Cu (II) complexes derived from pyrazine ligands: Structure, magnetism, catecholase, antimicrobial, antibiofilm, and antibreast cancer activity. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mohammad Shahwaz Ahmad
- Functional Inorganic Materials Lab (FIML), Department of Chemistry Aligarh Muslim University Aligarh India
| | - Mohd Khalid
- Functional Inorganic Materials Lab (FIML), Department of Chemistry Aligarh Muslim University Aligarh India
| | - Mohammad Shahnawaz Khan
- Functional Inorganic Materials Lab (FIML), Department of Chemistry Aligarh Muslim University Aligarh India
| | - Mohammad Shahid
- Functional Inorganic Materials Lab (FIML), Department of Chemistry Aligarh Muslim University Aligarh India
| | - Musheer Ahmad
- Department of Applied Chemistry Aligarh Muslim University Aligarh India
| | - Haris Saeed
- Interdisciplinary Biotechnology Unit Aligarh Muslim University Aligarh India
| | - Mohammad Owais
- Interdisciplinary Biotechnology Unit Aligarh Muslim University Aligarh India
| | - Mo Ashafaq
- Functional Inorganic Materials Lab (FIML), Department of Chemistry Aligarh Muslim University Aligarh India
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I M, Zeeshan M, Yadav O, Ansari A, Qasem KMA, Akhtar MN, AlDamen MA, Shahid M. Structure, DFT studies and evaluation of catechol oxidase (CO) mimic activity of mononuclear Co(II) complexes derived from aminoalcohols: an experimental and theoretical approach. J Biomol Struct Dyn 2021; 40:8740-8751. [PMID: 33955333 DOI: 10.1080/07391102.2021.1916598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The impetus to modeling of enzyme mimics comes from their potential to provide insight to the alternate mechanistic pathways of the native enzymes. The present study demonstrates the syntheses and characterization of two different cobalt(II) complexes, [Co(pdm)(Phen)Cl]Cl·H2O (1) and [Co(pmmH)2(SCN)2] (2) with the aminoalcohol ligands such as pyridine-2,6-dimethanol (pdmH2) or 2-pyridinemonomethanol (pmmH) and their assessment as catechol oxidase (CO) enzyme mimic. Single Crystal X-ray diffraction and powder X-ray diffraction data suggest the octahedral environment around the Co(II) ion and the complexes form extensive 1D or 2D propagating network as a result of non-covalent interactions (O···H and C-H···π). TD-DFT calculations were used to explain the spectral bands obtained during the UV-Vis absorption studies and it is ascertained that the transitions were mainly of the intra-ligand charge transfer (ILCT) type. The catecholase biomimetic catalytic activity of the synthesized complexes has been investigated in detail and the kinetics is also performed. The results obtained show that both the complexes catalyze the aerobic oxidation of catechol to the corresponding o-quinone. The Kcat value for 1 is 106.99 h‒1 and for 2 is 90.32 h‒1 in methanol. It may be mentioned here that 1 and 2 are effective catalysts, with the order of activity being 1 > 2. The order of enzymatic activity is well justified by CV and DFT studies.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mantasha I
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Mohd Zeeshan
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Oval Yadav
- Department of Chemistry, Central University of Haryana, Mahendergarh, Haryana, India
| | - Azaj Ansari
- Department of Chemistry, Central University of Haryana, Mahendergarh, Haryana, India
| | - Khalil M A Qasem
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University, Aligarh, India
| | - Muhammad Nadeem Akhtar
- Division of Inorganic Chemistry, Institute of Chemistry, Baghdad-ul-Jadeed Campus, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Murad A AlDamen
- Department of Chemistry, School of Science, the University of Jordan, Amman, Jordan
| | - M Shahid
- Functional Inorganic Materials Lab (FIML), Department of Chemistry, Aligarh Muslim University, Aligarh, India
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10
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Synthesis, characterization, molecular modeling and preliminary biochemical evaluation of new copper (II) mixed-ligand complexes. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129695] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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11
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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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12
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Mandal A, Sarkar A, Adhikary A, Samanta D, Das D. Structure and synthesis of copper-based Schiff base and reduced Schiff base complexes: a combined experimental and theoretical investigation of biomimetic catalytic activity. Dalton Trans 2020; 49:15461-15472. [PMID: 33141130 DOI: 10.1039/d0dt02784g] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three copper(ii) complexes, [Cu(L1)(NCS)]n (1), [Cu(L1)(N3)]n (2) and [Cu(L2)(N3)] (3) were synthesized from one Schiff base ligand and one reduced Schiff base ligand, (E)-4-chloro-2-[(2-propylaminoethylimino)methyl]phenol (HL1) and 4-chloro-2-[(2-(propylaminoethylamino) methyl]phenol (HL2), respectively. All complexes were characterized by various physicochemical studies, such as FT-IR, UV-Vis, ESI-MS, EPR and single crystal X-ray diffraction. Complexes 1 and 2 have 1D polymeric chain-like structures bridging through thiocyanate and azide anions, whereas complex 3 has a mononuclear structure in the solid state. All the complexes are active towards mimicking two well-known proteins, phosphatase and phenoxazinone synthase, using the disodium salt of 4-nitrophenylphosphate (4-NPP) and 2-aminophenol (OAP) as the substrate in DMF medium. Complexes 2 and 3 show the highest activity towards phosphatase and phenoxazinone synthase activity with kcat values of 22.6 s-1 and 134.4 h-1, respectively. EPR studies confirmed that for complex 1, the OAP oxidation goes through the generation of an organic radical at g = 1.99, which is due to an imine radical formation, whereas the metal center redox pathway is followed for complex 3. Extensive DFT calculations have been performed for both catalytic studies to put forward the most probable mechanistic pathways.
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Affiliation(s)
- Arnab Mandal
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India.
| | - Abani Sarkar
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India.
| | - Amit Adhikary
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India.
| | - Debabrata Samanta
- Department of Chemistry, Dukhulal Nibaran Chandra (DNC) College, Aurangabad, West Bengal 742201, India
| | - Debasis Das
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India.
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Dutta S, Ghosh TK, Mahapatra P, Ghosh A. Joining of Trinuclear Heterometallic Cu II2-M II (M = Mn, Cd) Nodes by Nicotinate to Form 1D Chains: Magnetic Properties and Catalytic Activities. Inorg Chem 2020; 59:14989-15003. [PMID: 33001631 DOI: 10.1021/acs.inorgchem.0c01733] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In the present work, four new heterometallic coordination complexes, {[(CuL)2Mn(nic)(H2O)2](ClO4)(0.5H2O)}n (1), {[(CuL)2Cd(nic)(H2O)2](ClO4)(H2O)}n (2), [(CuL)2Mn(nic)2]·2CH3OH (3), and [(CuL)2Cd(nic)2]·2CH3OH (4) (where H2L = N,N'-bis(α-methylsalicylidene)-1,3-propanediamine and nic = nicotinate ion), have been synthesized and characterized by single-crystal X-ray crystallography. In complexes 1 and 2, the nicotinate ion acts as a bifunctional linker (N,O donor) and joins the linear trinuclear nodes to form 1D polymeric chains. However, in complexes 3 and 4, the nicotinate ion uses only the oxygen atoms of the carboxylic acid (O donor) to bind to the metal centers, forming discrete linear trinuclear units, while the pyridyl nitrogen (N donor atom) remains free. The dc magnetic susceptibility measurements show that the CuII and MnII ions are antiferromagnetically coupled in both 1 and 3, with exchange coupling constants (JMn-Cu) of -20.57 ± 0.08 and -9.38 ± 0.08 cm-1, respectively. Among the four complexes, 1 and 3 show catechol oxidase and phenoxazinone synthase like catalytic activities. The turnover numbers (kcat) of complexes 1 and 3 for catecholase activity are 1121 and 720 h-1, respectively, at an optimum pH of 8.0 and for phenoxazinone synthase activity are 429 and 398 h-1, respectively, at an optimum pH of 9.7. The higher kcat values of 1 for both reactions are attributable to a water molecule coordinated to the central MnII atom that facilitates the substrate-catalyst binding. An ESI-mass spectral analysis indicates that trinuclear heterometallic species, e.g., [(CuL)2Mn(nic)(H2O)]+ for 1 and [(CuL)2Mn(nic)]+ for 3, are the active species that bind to the substrate, and on that basis, probable mechanisms through the formation of radical intermediates have been proposed.
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Affiliation(s)
- Sabarni Dutta
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Tanmoy Kumar Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Prithwish Mahapatra
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, India.,Rani Rashmoni Green University, Tarakeswar, Hooghly 712410, West Bengal, India
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New Heteroleptic 3D Metal Complexes: Synthesis, Antimicrobial and Solubilization Parameters. Molecules 2020; 25:molecules25184252. [PMID: 32947958 PMCID: PMC7570477 DOI: 10.3390/molecules25184252] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 12/17/2022] Open
Abstract
The microbial resistance to current antibiotics is increasing day by day, which in turn accelerating the development of new effective drugs. Several studies have proved the high antimicrobial potential of the interaction of several organic ligands with a variety of metal ions. In the present study, a conventional method has been adopted in the synthesis of twelve new heteroleptic complexes of cobalt (II), nickel (II), copper (II) and zinc (II) using three aldimines, namely, (HL1 ((E)-2-((4-chloro-2-hydroxybenzylidene)amino)-3,4-dimethyl-5-phenylcyclopent-2-en-1-one), HL2 ((Z)-3-((4-chlorobenzylidene)amino)-4-hydroxy-5-nitrobenzenesulfonic acid) HL3 (2,2'-((1,2-phenylenebis(azaneylylidene))bis(methaneylylidene))diphenol)) as primary ligands, while phenyl glycine was the secondary ligand. The synthesized compounds were characterized by UV-vis, IR and multinuclear (1H and 13C) NMR spectroscopy, elemental analysis, and electrical conductance. The IR study revealed the coordination of the aldimine derivatives with the -OH and N atom of imine moiety. In contrary to this, the phenyl glycine coordinated to the metal ions via oxygen of carboxylate and nitrogen of the amino group. The spectroscopic analysis unveiled the tetrahedral geometry of the synthesized metal (II) complexes, except for ligand HL3 which exhibited octahedral geometry. The synthesized compounds generally showed antibacterial activity for all microbes, except Ni (II) complexes lacking sensitivity. Furthermore, to access the bioavailability, the synthesized complexes were screened for their solubilization in the micellar media of sodium lauryl sulphate. The metal complex-surfactant interaction was revealed by UV-vis spectroscopy and electrical conductivity measurements.
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Synthesis of one-dimensional coordination polymer using dicyanamide spacer to explore catecholase like activity. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Dutta S, Bhunia P, Mayans J, Drew MGB, Ghosh A. Roles of basicity and steric crowding of anionic coligands in catechol oxidase-like activity of Cu(ii)-Mn(ii) complexes. Dalton Trans 2020; 49:11268-11281. [PMID: 32760992 DOI: 10.1039/d0dt00952k] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five new heterometallic Cu(ii)-Mn(ii) discrete trinuclear complexes, [(CuL)2Mn(CH3COO)2] (1), [(CuL)2Mn(NO3)2] (2), [(CuL)2Mn(C6H5COO)(H2O)]Cl (3), [(CuL)2Mn((p-OH)C6H5COO)(H2O)]ClO4 (4) and [(CuL)2Mn(HCOO)(H2O)]ClO4 (5), have been synthesized using a metalloligand, CuL derived from an N2O2 donor Schiff base, H2L (N,N'-bis(α-methylsalicylidene)-1,3-propanediamine). Single-crystal structural analyses reveal that all five complexes have a common [(CuL)2Mn] core, where two terminal metalloligands, CuL, are connected to the central metal ion, Mn(ii), via double phenoxido bridges. Among the complexes, 1 and 2 possess linear structures where the terminal Cu(ii) atoms are bridged to the central Mn(ii) atoms by acetate and nitrate ions, respectively along with the double phenoxido bridges, whereas 3, 4 and 5 have bent structures in which the respective anionic coligands, benzoate, p-hydroxybenzoate and formate ions are coordinated only to central Mn(ii) in monodentate fashion along with a water molecule that completes its hexa-coordinated geometry. Among the complexes, 1, 3, 4 and 5 show quite high bio-mimicking catecholase-like activity for the aerial oxidation of 3,5-di-tert-butylcatechol with turnover numbers (Kcat) of 139 h-1, 439 h-1, 348 h-1 and 730 h-1, respectively, whereas complex 2 is practically inactive towards this reaction. The presence of the coordinated water molecule to Mn(ii) in the bent complexes, 3-5, appears to be responsible for their high catalytic activity and the difference in their activity may be attributed to steric crowding due to the anionic coligand, whereas the inactivity of 2 seems to be associated with the low basicity of the nitrate ion. The temperature-dependent dc molar magnetic susceptibility measurements reveal that complexes 1-5 are antiferromagnetically coupled with the exchange coupling constants (J) = -8.54 cm-1, -11.50 cm-1, -19.83 cm-1, -10.65 cm-1 and -10.27 cm-1 for 1, 2, 3, 4 and 5 respectively as is expected from the Cu-O-Mn bridging angles.
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Affiliation(s)
- Sabarni Dutta
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, 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, Secció Inorgànica and Institut de Nanosciència I Nanotecnologia (IN2UB), Martíi Franqués 1-11, 08028, Barcelona, Spain
| | - Michael G B Drew
- School of Chemistry, The University of Reading, P.O. Box 224, Whiteknights, Reading RG6 6AD, UK
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India.
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Dasgupta S, Mandal A, Samanta D, Zangrando E, Maity S, Das D. Catalytic promiscuity of a copper(II)-Mannich base complex having unprecedented radical pathway in catecholase activity. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119480] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Design and synthesis of three Fe(III) mixed-ligand complexes: Exploration of their biological and phenoxazinone synthase-like activities. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119443] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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19
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Gasque L, Mendieta A, Ferrer-Sueta G. Comment on "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 and "Tri- and hexa-nuclear Ni II-Mn II complexes of a N 2O 2 donor unsymmetrical ligand: synthesis, structures, magnetic properties and catalytic oxidase activities", Dalton Trans., 2018, 47, 13957-13971. Dalton Trans 2020; 49:3365-3368. [PMID: 32077458 DOI: 10.1039/c9dt01498e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This letter comments on two examples of numerical results of kinetic parameters which are inconsistent with the experimental data given in the same articles. Since this seems to be a trend in inorganic chemistry articles dealing with the catalytic oxidation of 3,5 di tert- butylcatechol and ortho-aminophenol, we call the attention of editors, reviewers and readers about grossly overestimated catalytic parameters in the literature.
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Affiliation(s)
- Laura Gasque
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico.
| | - Alan Mendieta
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico.
| | - Gerardo Ferrer-Sueta
- Laboratorio de Fisicoquímica Biológica, Facultad de Ciencias, Montevideo, Uruguay and Centro de Investigaciones Biomédicas (CEINBIO), Universidad de la República, Montevideo, Uruguay
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20
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Dasgupta S, Paul S, Samanta D, Hansda S, Zangrando E, Das D. Catalytic promiscuity of two novel cobalt(III) complexes derived from redox non-innocent Schiff base ligands: Unraveling the role of methyl groups in the ligand backbone on catalytic efficiency. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119336] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Dutta S, Mayans J, Ghosh A. Facile synthesis of a new Cu(ii) complex with an unsymmetrical ligand and its use as an O 3 donor metalloligand in the synthesis of Cu(ii)-Mn(ii) complexes: structures, magnetic properties, and catalytic oxidase activities. Dalton Trans 2020; 49:1276-1291. [PMID: 31909778 DOI: 10.1039/c9dt04315b] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new, facile Cu(ii) template method has been employed for the unsymmetrical dicondensation of 1,2-ethylenediamine with salicylaldehyde and o-vanillin. The mononuclear complex, [CuL] (1), thus obtained, has been used as an O3 donor metalloligand for the synthesis of four new Cu(ii)-Mn(ii) complexes, [(CuL)MnCl2] (2), [(CuL)Mn(NO3)2(CH3OH)]n (3), {[(CuL)Mn(benz)(H2O)]2·(CuL)2(ClO4)2} (4) and [(CuL)Mn(benz)Cl]2 (5) (where benz = benzoate). Single-crystal structural analyses reveal that 2 is a dinuclear complex while complex 3 is polymeric with a repeating dinuclear [(CuL)Mn(NO3)2(CH3OH)] unit, linked via the nitrate ion. Both 4 and 5 are discrete tetranuclear complexes, where the dinuclear units [(CuL)Mn(benz)(H2O)] and [(CuL)Mn(benz)Cl] are connected by double benzoate and double chloride bridges, respectively. In complex 4, two monomeric [CuL] units are cocrystallized with the tetranuclear complex. An important difference in the structure of 4 from the other three complexes is that one solvent water molecule is coordinated to each Mn(ii) ion, which makes complex 4 catalytically very active towards mimicking catecholase and phenoxazinone synthase-like oxidation reactions. The turnover numbers (kcat) for the aerial oxidation of 3,5-di-tert-butylcatechol and o-aminophenol are 399 h-1 and 230 h-1, respectively. The evidence of the intermediate species in the mass spectra indicates possible heterometallic cooperation where the Mn(ii) center helps in substrate binding and Cu(ii) participates in the oxidation reactions with molecular oxygen. Cyclic voltammetry measurements suggest the reduction of Cu(ii) to Cu(i) during the catalytic process. Temperature-dependent dc molar magnetic susceptibility measurements reveal that complexes 2-5 are antiferromagnetically coupled with the exchange coupling constants (J) of J = -13.5 cm-1 and J = -13.5 cm-1 for 2 and 3, respectively, J1 = -12.6 cm-1 and J2 = -1.20 cm-1 for complex 4 and J1 = -13.24 cm-1 and J2 = 0.36 cm-1 for complex 5 as is expected from the Cu-O-Mn bridging angles.
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Affiliation(s)
- Sabarni Dutta
- 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, Secció Inorgànica and Institut de Nanosciència I Nanotecnologia (IN2UB), Martíi Franqués 1-11, 08028, Barcelona, Spain
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92, A.P.C. Road, Kolkata 700 009, India.
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22
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A rare flattened tetrahedral Mn(II) salen type complex: Synthesis, crystal structure, biomimetic catalysis and DFT study. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119176] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Mandal A, Dasgupta S, Adhikary A, Samanta D, Zangrando E, Das D. Synthesis of Mn3O4 nanozymes from structurally characterized phenoxazinone synthase models based on manganese(iii) Schiff base complexes. Dalton Trans 2020; 49:5999-6011. [DOI: 10.1039/d0dt00355g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mn3O4 nanozymes of phenoxazinone synthase have been prepared from the manganese(iii) based mimicking models of the enzyme.
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Affiliation(s)
- Arnab Mandal
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | | | - Amit Adhikary
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Debabrata Samanta
- Department of Chemistry
- Indian Institute of Technology
- Kanpur-208016
- India
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences
- University of Trieste
- 34127 Trieste
- Italy
| | - Debasis Das
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
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24
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I. M, Shahid M, Kumar M, Ansari A, Akhtar MN, AlDamen MA, Song Y, Ahmad M, Khan IM. Exploring solvent dependent catecholase activity in transition metal complexes: an experimental and theoretical approach. NEW J CHEM 2020. [DOI: 10.1039/c9nj04374h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Four coordination compounds are designed with pyridinemethanol ligands, characterized with spectral, magnetic and X-ray analyses, and assessed for catecholase activity in various solvents.
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Affiliation(s)
- Mantasha I.
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - M. Shahid
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Manjeet Kumar
- Department of Chemistry
- Central University of Haryana
- Mahendergarh-123031
- India
| | - Azaj Ansari
- Department of Chemistry
- Central University of Haryana
- Mahendergarh-123031
- India
| | - Muhammad Nadeem Akhtar
- Department of Chemistry
- Khwaja Fareed University of Engineering & Information Technology
- Rahim Yar Khan 64200
- Pakistan
| | - Murad A. AlDamen
- Department of Chemistry
- Faculty of Science
- The University of Jordan
- Amman 11942
- Jordan
| | - You Song
- State Key Laboratory of Coordination Chemistry
- Nanjing University
- Nanjing 210023
- P. R. China
| | - Musheer Ahmad
- Department of Applied Chemistry (ZHCET)
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Ishaat M. Khan
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
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25
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Chakraborty M, Mondal A, Chattopadhyay SK. Structural divergence in binuclear Cu(ii) pyridoxal Schiff base complexes probed by co-ligands: catecholase mimetic activity and sulphide ion sensing. NEW J CHEM 2020. [DOI: 10.1039/d0nj00719f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three Cu(ii) complexes showing efficient catecholase activity, with pronounced solvent sensitivity, S2−sensing ability in micromolar concentrations, and coligand dependent denticity of the pyridoxal Schiff base ligand are reported.
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Affiliation(s)
- Moumita Chakraborty
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Shibpur
- Howrah 711103
- India
| | - Antu Mondal
- Department of Chemistry
- Indian Institute of Engineering Science and Technology
- Shibpur
- Howrah 711103
- India
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26
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Adak P, Mondal A, Chattopadhyay SK. Manganese(ii) complex of an oxygen–nitrogen donor Schiff base ligand showing efficient catechol oxidase activity: synthesis, spectroscopic and kinetic study. NEW J CHEM 2020. [DOI: 10.1039/c9nj04591k] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Mn(ii) complex containing two tridentate O,N,O-donor semicarbazone ligands shows very high catalytic activity for the aerial oxidation of 3,5DTBCH2 with kcat = 3.10 × 106 h−1, and kcat/KM = 3.25 × 108 h−1 M−1.
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Affiliation(s)
- Piyali Adak
- Department of Chemistry
- Indian Institute of Engineering Science and Technology, Shibpur
- Howrah-711103
- India
| | - Antu Mondal
- Department of Chemistry
- Indian Institute of Engineering Science and Technology, Shibpur
- Howrah-711103
- India
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27
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New Artificial Biomimetic Enzyme Analogues based on Iron(II/III) Schiff Base Complexes: An Effect of (Benz)imidazole Organic Moieties on Phenoxazinone Synthase and DNA Recognition. Molecules 2019; 24:molecules24173173. [PMID: 31480486 PMCID: PMC6749401 DOI: 10.3390/molecules24173173] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 08/28/2019] [Accepted: 08/29/2019] [Indexed: 02/03/2023] Open
Abstract
Elucidation of the structure and function of biomolecules provides us knowledge that can be transferred into the generation of new materials and eventually applications in e.g., catalysis or bioassays. The main problems, however, concern the complexity of the natural systems and their limited availability, which necessitates utilization of simple biomimetic analogues that are, to a certain degree, similar in terms of structure and thus behaviour. We have, therefore, devised a small library of six tridentate N-heterocyclic coordinating agents (L1-L6), which, upon complexation, form two groups of artificial, monometallic non-heme iron species. Utilization of iron(III) chloride leads to the formation of the 1:1 (Fe:Ln) 'open' complexes, whereas iron(II) trifluoromethanosulfonate allows for the synthesis of 1:2 (M:Ln) 'closed' systems. The structural differences between the individual complexes are a result of the information encoded within the metallic centre and the chosen counterion, whereas the organic scaffold influences the observed properties. Indeed, the number and nature of the external hydrogen bond donors coming from the presence of (benz)imidazole moieties in the ligand framework are responsible for the observed biological behaviour in terms of mimicking phenoxazinone synthase activity and interaction with DNA.
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28
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Paşa S, Erdoğan Ö, Yenisey Ç. Synthesis and structural identification of boron based Schiff compounds with Ishikawa endometrial cancer and antioxidant activity. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.03.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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29
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Sarma C, Chaurasia PK, Bharati SL. Versatile Catalytic Applications of Manganese(II,III) Schiff Base Complexes (Review). RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219030253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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30
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Dasgupta S, Chakraborty P, Kundu P, Kara H, Aullón G, Zangrando E, Das D. Designing antiferromagnetically coupled mono-, di- and tri-bridged copper( ii)-based catecholase models by varying the ‘Auxiliary Parts’ of the ligand and anionic co-ligand. CrystEngComm 2019. [DOI: 10.1039/c9ce01115c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The role of the auxiliary part of ligands towards the architecture of copper(ii)-based catecholase models were unveiled with the help of DFT study.
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Affiliation(s)
| | | | - Priyanka Kundu
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | - Hulya Kara
- Department of Physics
- Faculty of Science and Art
- Balikesir University
- 10145 Balikesir
- Turkey
| | - Gabriel Aullón
- Departament de Química Inorgànica i Orgànica (Secció de Química Inorgànica) and Institut de QuímicaTeòrica i Computacional
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - Ennio Zangrando
- Department of Chemical and Pharmaceutical Sciences
- University of Trieste
- 34127 Trieste
- Italy
| | - Debasis Das
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
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31
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Ahamad MN, Kumar M, Ansari A, I. M, Ahmad M, Shahid M. Synthesis, characterization, theoretical studies and catecholase like activities of [MO6] type complexes. NEW J CHEM 2019. [DOI: 10.1039/c9nj03729b] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co(ii) and Zn(ii) complexes are prepared and characterized through spectral, crystallographic and theoretical studies. The Co(ii) complex is shown to be a catechol oxidase mimic and the activity is corroborated by DFT results.
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Affiliation(s)
- M. Naqi Ahamad
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Manjeet Kumar
- Department of Chemistry
- Central University of Haryana
- Mahendergarh-123031
- India
| | - Azaj Ansari
- Department of Chemistry
- Central University of Haryana
- Mahendergarh-123031
- India
| | - Mantasha I.
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Musheer Ahmad
- Department of Applied Chemistry (ZHCET)
- Aligarh Muslim University
- Aligarh-202002
- India
| | - M. Shahid
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
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32
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Das A, Chakraborty M, Maity S, Ghosh A. The catalytic activities and magnetic behaviours of rare μ3-chlorido and μ1,1,1-azido bridged defective dicubane tetranuclear Mn(ii) complexes. Dalton Trans 2019; 48:9342-9356. [DOI: 10.1039/c9dt01567a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A μ3-chlorido and a μ1,1,1-azido bridged defective dicubane tetranuclear Mn(ii) complexes of polynucleating Mannich base ligand show significant catalytic oxidase activities and are antiferromagnetically coupled which is rationalized by DFT calculations.
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Affiliation(s)
- Avijit Das
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Maharudra Chakraborty
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Souvik Maity
- 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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33
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Chakraborty T, Mukherjee S, Dasgupta S, Biswas B, Das D. Anion-mediated bio-relevant catalytic activity of dinuclear nickel(ii) complexes derived from an end-off compartmental ligand. Dalton Trans 2019; 48:2772-2784. [DOI: 10.1039/c8dt04631j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The role of anions towards the catalytic activities of antiferromagnetically coupled dinuclear nickel(ii) complexes having end-off compartmental ligand was unveiled.
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Affiliation(s)
| | - Somali Mukherjee
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
| | | | - Biplab Biswas
- Department of Chemistry
- Presidency University
- Kolkata 700073
- India
| | - Debasis Das
- Department of Chemistry
- University of Calcutta
- Kolkata 700009
- India
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34
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Sarkar A, Chakraborty A, Adhikary A, Maity S, Mandal A, Samanta D, Ghosh P, Das D. Exploration of catecholase-like activity of a series of magnetically coupled transition metal complexes of Mn, Co and Ni: new insights into the solution state behavior of Mn complexes. Dalton Trans 2019; 48:14164-14177. [DOI: 10.1039/c9dt02399b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Oxidation state dependent catecholase activity has been explored with Mn-Schiff-base complex which transform oxidation state from +ii to +iii in solution with time by combined experimental and theoretical investigations.
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Affiliation(s)
- Abani Sarkar
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Aratrika Chakraborty
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Amit Adhikary
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Suvendu Maity
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata 700 103
- India
| | - Arnab Mandal
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
| | - Debabrata Samanta
- Department of Chemistry
- Indian Institute of Technology
- Kanpur-208016
- India
| | - Prasanta Ghosh
- Department of Chemistry
- R. K. Mission Residential College
- Kolkata 700 103
- India
| | - Debasis Das
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata 700009
- India
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35
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Mahapatra P, Drew MGB, Ghosh A. Ni(II) Complex of N2O3 Donor Unsymmetrical Ligand and Its Use for the Synthesis of NiII–MnII Complexes of Diverse Nuclearity: Structures, Magnetic Properties, and Catalytic Oxidase Activities. Inorg Chem 2018; 57:8338-8353. [DOI: 10.1021/acs.inorgchem.8b00995] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Prithwish Mahapatra
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Michael G. B. Drew
- School of Chemistry, The University of Reading, P.O. Box 224, Whiteknights, Reading RG6 6AD, United Kingdom
| | - Ashutosh Ghosh
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
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36
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Busa AV, Lalancette R, Nordlander E, Onani M. New copper(II) salicylaldimine derivatives for mild oxidation of cyclohexane. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1455-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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37
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Synthesis, characterization and catechol oxidase mimicking activity of two iron(III) schiff base complexes. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.12.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Panja A, Jana NC, Brandão P. Influence of anions and solvents on distinct coordination chemistry of cobalt and effect of coordination spheres on the biomimetic oxidation of o-aminophenols. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.02.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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39
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Phenoxazinone synthase activity of two iron(III) complexes comprising the same Schiff base ligand: Biomimetic functional model and mechanistic investigation. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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40
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Panja A, Frontera A. Valence-Tautomerism-Driven Aromatic Nucleophilic Substitution in Cobalt-Bound Tetrabromocatecholate Ligands - Influence of Positive Charge at the Ligand Backbone on Phenoxazinone Synthase Activity. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701176] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Anangamohan Panja
- Postgraduate Department of Chemistry; Panskura Banamali College; WB 721152 Panskura RS India
| | - Antonio Frontera
- Departament de Química; Universitat de les Illes Balears; Crta. de Valldemossa km 7.5 07122 Palma de Mallorca (Baleares) Spain
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41
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Adhikary J, Majumdar I, Kundu P, Kornweitz H, Kara H, Das D. Role of Electronegative Atom Present on Ligand Backbone and Substrate Binding Mode on Catecholase- and Phosphatase-Like Activities of Dinuclear NiIIComplexes: A Theoretical Support. ChemistrySelect 2018. [DOI: 10.1002/slct.201702861] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jaydeep Adhikary
- Department of Chemical Sciences; Ariel University; Ariel 40700 Israel
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road Kolkata - 700009 India
| | - Ishani Majumdar
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road Kolkata - 700009 India
| | - Priyanka Kundu
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road Kolkata - 700009 India
| | - Haya Kornweitz
- Department of Chemical Sciences; Ariel University; Ariel 40700 Israel
| | - Hulya Kara
- Department of Physics; Faculty of Science and Art; Balikesir University; Balikesir Turkey
- Department of Physics; Faculty of Science; Mugla Sıtkı Koçman University; Mugla Turkey
| | - Debasis Das
- Department of Chemistry; University of Calcutta; 92, A. P. C. Road Kolkata - 700009 India
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42
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Ganguly S, Kar P, Chakraborty M, Ghosh A. The first alternating MnII–MnIII 1D chain: structure, magnetic properties and catalytic oxidase activities. NEW J CHEM 2018. [DOI: 10.1039/c8nj00414e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A one-dimensional mixed-valence MnII/MnIII chain has been synthesized using N-salicylidene-l-alanine and 2,2′-bipyridine. The complex shows moderate catecholase and phenoxazinone synthase-like activity.
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Affiliation(s)
- Sayantan Ganguly
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Paramita Kar
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Maharudra Chakraborty
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
| | - Ashutosh Ghosh
- Department of Chemistry
- University College of Science
- University of Calcutta
- Kolkata-700 009
- India
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43
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Mahapatra P, Drew MGB, Ghosh A. Tri- and hexa-nuclear NiII–MnII complexes of a N2O2 donor unsymmetrical ligand: synthesis, structures, magnetic properties and catalytic oxidase activities. Dalton Trans 2018; 47:13957-13971. [DOI: 10.1039/c8dt02962h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Among two trinuclear and a hexanuclear NiII–MnII complexes, synthesized by using a Ni(ii) metalloligand of a N2O2 donor unsymmetrical ligand, only those containing a H2O molecule coordinated to the MnII center show very high catalytic oxidase activities.
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Affiliation(s)
- Prithwish Mahapatra
- 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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44
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Mahapatra P, Ghosh S, Giri S, Rane V, Kadam R, Drew MGB, Ghosh A. Subtle Structural Changes in (CuIIL)2MnII Complexes To Induce Heterometallic Cooperative Catalytic Oxidase Activities on Phenolic Substrates (H2L = Salen Type Unsymmetrical Schiff Base). Inorg Chem 2017; 56:5105-5121. [DOI: 10.1021/acs.inorgchem.7b00253] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Prithwish Mahapatra
- Department of Chemistry,
University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Soumavo Ghosh
- Department of Chemistry,
University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Sanjib Giri
- Department of Chemistry,
University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
| | - Vinayak Rane
- Radiochemistry division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Ramakant Kadam
- Radiochemistry division, Bhabha Atomic Research Center, Trombay, Mumbai 400085, India
| | - Michael G. B. Drew
- School of Chemistry, The University of Reading, P.O. Box 224, Whiteknights, Reading RG6 6AD, U.K
| | - Ashutosh Ghosh
- Department of Chemistry,
University College of Science, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
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45
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Balakrishnan C, Theetharappan M, Kowsalya P, Natarajan S, Neelakantan M, Mariappan S. Biocatalysis, DNA–protein interactions, cytotoxicity and molecular docking of Cu(II), Ni(II), Zn(II) and V(IV) Schiff base complexes. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3776] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Chithiraivel Balakrishnan
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| | - M. Theetharappan
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| | - P. Kowsalya
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| | - Satheesh Natarajan
- Department of Pharmacy, School of Health SciencesKwazulu Natal University Durban 4001 South Africa
| | - M.A. Neelakantan
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
| | - S.S. Mariappan
- Chemistry Research CentreNational Engineering College K. R. Nagar, Kovilpatti 628503 Thoothukudi District Tamil Nadu India
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46
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Chattopadhyay K, Craig GA, Heras Ojea MJ, Pait M, Kundu A, Lee J, Murrie M, Frontera A, Ray D. Dangling and Hydrolyzed Ligand Arms in [Mn3] and [Mn6] Coordination Assemblies: Synthesis, Characterization, and Functional Activity. Inorg Chem 2017; 56:2639-2652. [DOI: 10.1021/acs.inorgchem.6b02813] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Gavin A. Craig
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ,U.K
| | | | - Moumita Pait
- Department of Chemistry, Indian Institute of Technology (IIT), Kharagpur, INDIA
- Chonnam National University, Gwangju 61186, South Korea
| | - Animesh Kundu
- Department of Chemistry, Indian Institute of Technology (IIT), Kharagpur, INDIA
| | - Junseong Lee
- Chonnam National University, Gwangju 61186, South Korea
| | - Mark Murrie
- School of Chemistry, University of Glasgow, Glasgow G12 8QQ,U.K
| | - Antonio Frontera
- Departament de Química, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), SPAIN
| | - Debashis Ray
- Department of Chemistry, Indian Institute of Technology (IIT), Kharagpur, INDIA
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47
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Dasgupta S, Adhikary J, Giri S, Bauza A, Frontera A, Das D. Unveiling the effects of the in situ generated arene anion radical and imine radical on catecholase like activity: a DFT supported experimental investigation. Dalton Trans 2017; 46:5888-5900. [DOI: 10.1039/c7dt00733g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comparative mechanistic account has been portrayed on the basis of arene anions and imine radicals in this study on catecholase activity.
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Affiliation(s)
| | - Jaydeep Adhikary
- Department of Chemistry
- University of Calcutta
- Kolkata – 700009
- India
| | - Sanjib Giri
- Department of Chemistry
- University of Calcutta
- Kolkata – 700009
- India
| | - Antonio Bauza
- Departament de Química
- Universitat de les Illes Balears
- Palma (Baleares)
- Spain
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- Palma (Baleares)
- Spain
| | - Debasis Das
- Department of Chemistry
- University of Calcutta
- Kolkata – 700009
- India
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48
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Mandal A, Dasgupta S, Ganguly S, Bauzá A, Frontera A, Das D. Cooperative influence of pseudohalides and ligand backbone of Schiff-bases on nuclearity and stereochemistry of cobalt(iii) complexes: experimental and theoretical investigation. Dalton Trans 2017; 46:15257-15268. [DOI: 10.1039/c7dt03040a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ligand backbone effect of homologous Schiff-bases in combination with influences of SCN− and N3− is instrumental in controlling nuclearity and stereochemistry of catecholase active cobalt(iii) complexes.
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Affiliation(s)
- Arnab Mandal
- Department of Chemistry
- University of Calcutta
- Kolkata – 700009
- India
| | | | - Sumi Ganguly
- Department of Chemistry
- University of Calcutta
- Kolkata – 700009
- India
| | - Antonio Bauzá
- Departament de Química
- Universitat de les Illes Balears
- Palma
- Spain
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- Palma
- Spain
| | - Debasis Das
- Department of Chemistry
- University of Calcutta
- Kolkata – 700009
- India
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49
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Mahato M, Mondal D, Nayek HP. Syntheses, Structures and Phenoxazinone Synthase Activities of Two Cobalt(III) Complexes. ChemistrySelect 2016. [DOI: 10.1002/slct.201601597] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mamata Mahato
- Department of Applied Chemistry; Indian Institute of Technology (ISM) Dhanbad, 826004; Jharkhand India
| | - Dipanjan Mondal
- Department of Applied Chemistry; Indian Institute of Technology (ISM) Dhanbad, 826004; Jharkhand India
| | - Hari Pada Nayek
- Department of Applied Chemistry; Indian Institute of Technology (ISM) Dhanbad, 826004; Jharkhand India
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