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Mohammed TP, George A, Sivaramakrishnan MP, Vadivelu P, Balasubramanian S, Sankaralingam M. Deciphering the effect of amine versus imine ligands of copper(II) complexes in 2-aminophenol oxidation. J Inorg Biochem 2023; 247:112309. [PMID: 37451084 DOI: 10.1016/j.jinorgbio.2023.112309] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/19/2023] [Accepted: 06/27/2023] [Indexed: 07/18/2023]
Abstract
A series of amine (1-6) and imine (5',6') based copper(II) complexes with tridentate (NNO) ligand donors were synthesized and characterized using modern analytical techniques. All the complexes were subjected to 2-aminophenol (OAP) oxidation to form 2-aminophenoxazin-3-one, as a functional analogue of an enzyme, phenoxazinone synthase. In addition, a critical comparison of the reactivity using the amine-based complexes with their respective imine counterparts was achieved in both experimental as well as theoretical studies. For instance, the kinetic measurement revealed that the imine-based copper(II) complexes (kcat, 2.4 × 105-6.2 × 106 h-1) are better than amine-based (kcat, 6.3 × 104-3.9 × 105 h-1) complexes. The complex-substrate adducts [Cu(L3)(OAP)] (7) and [Cu(L3')(OAP)] (7') were characterized for both systems by mass spectrometry. Further, the DFT study was performed with amine- (3) and imine- (3') based copper(II) complexes, to compare their efficacy in the oxidation of OAP. The mechanistic investigations reveal that the key elementary step to determine the reactivity of 3 and 3' is the proton-coupled electron transfer (PCET) step occurring from the intermediates 7/7'. Further, the computed HOMO-LUMO energy gap of 7' was smaller than 7 by 0.8 eV, which indicates the facile PCET compared to that of 7. Moreover, the coupling of the OAP moiety using imine-complexes (ΔGR.E = -5.8 kcal/mol) was found to be thermodynamically more favorable than amine complexes (ΔGR.E = +3.3 kcal/mol). Overall, the theoretical findings are in good agreement with the experimental results.
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Affiliation(s)
- Thasnim P Mohammed
- Bioinspired & Biomimetic Inorganic Chemistry Lab, Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Akhila George
- Bioinspired & Biomimetic Inorganic Chemistry Lab, Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | | | - Prabha Vadivelu
- Department of Chemistry, Central University of Tamil Nadu, Thiruvarur 610 005, India
| | - Sridhar Balasubramanian
- Centre for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Muniyandi Sankaralingam
- Bioinspired & Biomimetic Inorganic Chemistry Lab, Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India.
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Krishnan D, Sheela A. A Review on DNA/BSA binding and Cytotoxic properties of Multinuclear Schiff’s base Complexes. Results in Chemistry 2022. [DOI: 10.1016/j.rechem.2022.100732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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Bhunia S, Chattopadhyay S. Mono-anionic succinic acid bridged cationic cobalt(III/II/III) compounds of N2O2 donor ‘reduced Schiff base’ ligands containing perchlorate counter ions: Synthesis, structures and different non-covalent interactions in self-assembly. Results in Chemistry 2022. [DOI: 10.1016/j.rechem.2022.100701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Thennarasu AS, Mohammed TP, Sankaralingam M. Mononuclear copper( ii) Schiff base complexes as effective models for phenoxazinone synthase. NEW J CHEM 2022. [DOI: 10.1039/d2nj03934f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Copper(ii) complexes of tridentate (N2O) Schiff base ligands as efficient catalysts for 2-aminophenol oxidation to 2-aminophenoxazin-3-one with excellent reaction rates.
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Affiliation(s)
- Abinaya Sushana Thennarasu
- Bioinspired & Biomimetic Inorganic Chemistry Lab, Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Thasnim P Mohammed
- Bioinspired & Biomimetic Inorganic Chemistry Lab, Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Muniyandi Sankaralingam
- Bioinspired & Biomimetic Inorganic Chemistry Lab, Department of Chemistry, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
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Bhaumik PK, Gomila RM, Frontera A, Benmansour Souilamas S, Gomez Garcia CJ, Chattopadhyay S. Insight into non-covalent interactions in a [Cu(N3)4]2- bridged hetero-pentanuclear copper(II)/sodium complex with special emphasis on the strong CH···π[Cu(N3)4] interactions. NEW J CHEM 2022. [DOI: 10.1039/d2nj00614f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The swastika-shaped anion, [Cu(N3)4]2- in the pentanuclear hetero-metallic copper(II)-Sodium complex, [(CuLNa)2(µ-N3)2Cu(N3)2] (1), where H2L = N,N'-bis(3-ethoxysalicylidene)-2,2-dimethylpropane-1,3-diamine (N2O4 donor compartmental Schiff base) is nearly planar and provides a π-basic surface adequate...
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Majumdar D, Pal TK, Sakib SA, Das S, Bankura K, Mishra D. Synthesis, spectroscopic characterization, and SC-XRD study of one privileged heteronuclear Ni(II)/Hg(II)-Salen complex: An exclusive DFT outlook. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108609] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Banerjee A, Chattopadhyay S. Dinuclear mixed valence cobalt(II/III) and hetero-tetranuclear cobalt(III)/Na complexes with a compartmental ligand: Synthesis, characterization and use as catalysts for oxidative dimerisation of 2-aminophenol. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120044] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Karmakar M, Chattopadhyay S. Synthesis, structure and nitroaromatic sensing ability of a trinuclear zinc complex with a reduced Schiff base ligand: Assessment of the ability of the ligand to sense zinc ion. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114639] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Roy S, Dutta T, Drew MG, Chattopadhyay S. Phenoxazinone synthase mimicking activity of a dinuclear copper(II) complex with a half salen type Schiff base ligand. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114311] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Roy S, Halder S, Dey A, Harms K, Ray PP, Chattopadhyay S. Representation of a photosensitive Schottky barrier diode made with hetero-dinuclear cobalt(iii)/sodium building blocks. NEW J CHEM 2020. [DOI: 10.1039/c9nj04542b] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A hetero-dinuclear cobalt(iii)/sodium complex has been synthesized and characterized. The complex which has been used to construct photosensitive Schottky devices, shows interesting C–H⋯π(N3) interactions in the solid state.
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Affiliation(s)
- Sourav Roy
- Department of Chemistry
- Inorganic Section
- Jadavpur University
- Kolkata-700032
- India
| | - Soumi Halder
- Department of Physics
- Jadavpur University
- Kolkata-700032
- India
| | - Arka Dey
- Department of Physics
- Jadavpur University
- Kolkata-700032
- India
- Department of Condensed Matter Physics and Material Sciences
| | - Klaus Harms
- Fachbereich Chemie
- Philipps-Universität Marburg
- D-35032 Marburg
- Germany
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Affiliation(s)
- Ipsita Mondal
- Department of Chemistry, Jadavpur University, Kolkata, India
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Mondal I, Ghosh K, Franconetti A, Frontera A, Chatterjee S, Chattopadhyay S. Synthesis and characterization of a manganese(III) schiff base complex and exploration of Br···Br interaction in the solid state structure of the complex. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1688311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Ipsita Mondal
- Department of Chemistry, Inorganic Section, Jadavpur University, Kolkata, India
| | - Kousik Ghosh
- Department of Chemistry, Inorganic Section, Jadavpur University, Kolkata, India
| | - Antonio Franconetti
- Departamento de Química, Universitat de les Illes Balears, Palma (Baleares), Spain
| | - Antonio Frontera
- Departamento de Química, Universitat de les Illes Balears, Palma (Baleares), Spain
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Banerjee A, Frontera A, Chattopadhyay S. Methylene spacer regulated variation in molecular and crystalline architectures of cobalt(iii) complexes with reduced Schiff base ligands: a combined experimental and theoretical study. Dalton Trans 2019; 48:11433-11447. [PMID: 31290506 DOI: 10.1039/c9dt01818b] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Two heteronuclear cobalt(iii)/sodium complexes, [(H2O)2Co(H2L1)Na(N3)2] (1) and (μ-N3)2[(N3)Co(H2L2)Na]2 (2) have been synthesized by the reaction of two compartmental reduced Schiff bases, H2L1 [(1,2-propanediyl)bis(iminomethylene)bis(6-ethoxyphenol)] and H2L2 [(2,2-dimethyl-1,3-propanediyl)bis(iminomethylene)bis(6-ethoxyphenol)], with cobalt(ii) nitrate hexahydrate in methanol. Structures of both the complexes have been confirmed by single crystal X-ray diffraction analysis. In each complex, cobalt(iii) is located in the inner N2O2 compartment and sodium is placed in the outer O2O'2 compartment of the respective ligands. In complex 1, the saturated five-membered chelate ring assumes a half-chair conformation, thereby facilitating the anti-orientations of two N-H bonds, which in turn favours the formation of very strong hydrogen bonds forming an infinite one-dimensional assembly. Formation of this one-dimensional chain is also supported by C-Hπ (arene) interactions. On the other hand, the best hydrogen bond donor NH groups are in syn disposition (as the saturated chelate ring is six-membered and assumes a chair conformation) and do not participate in the crystal packing in complex 2. However, very strong C-Hπ(N3) interactions have been established in complex 2, where the π-system of the bridging azide ligand participates as the π-donor. A search in the Cambridge structural database (CSD) has also been carried out to investigate the abundance and directionality of the interaction using different pseudohalides. Energies of all these supramolecular interactions were estimated by DFT calculations including Grimme's dispersion correction and characterized by the NCI plot index computational tool.
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Affiliation(s)
- Abhisek Banerjee
- Department of Chemistry, Inorganic Section, Jadavpur University, Kolkata - 700032, India.
| | - Antonio Frontera
- Department of Chemistry, Universitat de les IllesBalears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca, Baleares, Spain
| | - Shouvik Chattopadhyay
- Department of Chemistry, Inorganic Section, Jadavpur University, Kolkata - 700032, India.
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Ghosh K, Harms K, Franconetti A, Frontera A, Chattopadhyay S. A triple alkoxo bridged dinuclear cobalt(III) complex mimicking phosphatase and showing ability to degrade organic dye contaminants by photocatalysis. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.01.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Roy S, Mondal I, Harms K, Chattopadhyay S. A trigonal dodecahedral cadmium(II) complex with zinc(II)–salen type metalloligand: Synthesis, structure, self-assembly and application in the detection of various nitroaromatics via turn-off fluorescence response. Polyhedron 2019; 159:265-74. [DOI: 10.1016/j.poly.2018.11.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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