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Chaudhary K, Agrahari B, Biswas B, Chatterjee N, Chaudhary A, Kumar A, Sonker H, Dewan S, Saxena D, Akhir A, Malhotra N, Chopra S, Misra S, Matheswaran S, Singh RG. Pyridine-2,6-Dicarboxamide Proligands and their Cu(II)/Zn(II) Complexes Targeting Staphylococcus Aureus for the Attenuation of In Vivo Dental Biofilm. Adv Healthc Mater 2024; 13:e2400378. [PMID: 38621382 DOI: 10.1002/adhm.202400378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2024] [Revised: 04/07/2024] [Indexed: 04/17/2024]
Abstract
In the pursuit to combat stubborn bacterial infections, particularly those stemming from gram-positive bacteria, this study is an attempt to craft a precision-driven platform characterized by unparalleled selectivity, specificity, and synergistic antimicrobial mechanisms. Leveraging remarkable potential of metalloantibiotics in antimicrobial applications, herein, this work rationally designs, synthesizes, and characterizes a new library of Pyridine-2,6-dicarboxamide ligands and their corresponding transition metal Cu(II)/Zn(II) complexes. The lead compound L11 demonstrates robust antibacterial properties against Staphylococcus aureus (Minimum Inhibitory Concentration (MIC) = 2-16 µg mL-1), methicillin and vancomycin-resistant S. aureus (MIC = 2-4 µg mL-1) and exhibit superior antibacterial activity when compared to FDA-approved vancomycin, the drug of last resort. Additionally, the compound exhibits notable antimicrobial efficacy against resistant enterococcus strains (MIC = 2-8 µg mL-1). To unravel mechanistic profile, advanced imaging techniques including SEM and AFM are harnessed, collectively suggesting a mechanistic pathway involving cell wall disruption. Live/dead fluorescence studies further confirm efficacy of L11 and its complexes against S. aureus membranes. This translational exploration extends to a rat model, indicating promising in vivo therapeutic potential. Thus, this comprehensive research initiative has capabilities to transcends the confines of this laboratory, heralding a pivotal step toward combatting antibiotic-resistant pathogens and advancing the frontiers of metalloantibiotics-based therapy with a profound clinical implication.
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Affiliation(s)
| | | | - Bhumika Biswas
- Department of Biological Sciences and Bioengineering, IIT, Kanpur, 208016, India
| | - Niranjan Chatterjee
- Department of Biological Sciences and Bioengineering, IIT, Kanpur, 208016, India
| | | | | | | | - Sayari Dewan
- Department of Chemistry, IIT, Kanpur, 208016, India
| | - Deepanshi Saxena
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Abdul Akhir
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Nidhi Malhotra
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Gautam Budh Nagar, 201314, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Santosh Misra
- Department of Biological Sciences and Bioengineering, IIT, Kanpur, 208016, India
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2
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Mishra A, Srivastava D, Raj D, Patra N, Padhi SK. Formate dehydrogenase activity by a Cu(II)-based molecular catalyst and deciphering the mechanism using DFT studies. Dalton Trans 2024; 53:1209-1220. [PMID: 38108489 DOI: 10.1039/d3dt03023g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Due to the requirement to establish renewable energy sources, formic acid (FA), one of the most probable liquid organic hydrogen carriers (LOHCs), has received great attention. Catalytic formic acid dehydrogenation in an effective and environmentally friendly manner is still a challenge. The N3Q3 ligand (N3Q3 = N,N-bis(quinolin-8-ylmethyl)quinolin-8-amine) and the square pyramidal [Cu(N3Q3)Cl]Cl complex have been synthesised in this work and characterised using several techniques, such as NMR spectroscopy, mass spectrometry, EPR spectroscopy, cyclic voltammetry, X-ray diffraction and DFT calculations. This work investigates the dehydrogenation of formic acid using a molecular and homogeneous catalyst [Cu(N3Q3)Cl]Cl in the presence of HCOONa. The mononuclear copper complex exhibits catalytic activity towards the dehydrogenation of formic acid in H2O with the evolution of a 1 : 1 CO2 and H2 mixture. The activation energy of formic acid dehydrogenation was calculated to be Ea = 86 kJ mol-1, based on experiments carried out at various temperatures. The Gibbs free energy was found to be 82 kJ at 298 K for the decomposition of HCOOH. The DFT studies reveal that [Cu(N3Q3)(HCOO-)]+ undergoes an uphill process of rearrangement followed by decarboxylation to generate [Cu(N3Q3)(H-)]+. The initial uphill step for forming a transition state is the rate-determining step. The [Cu(N3Q3)(H-)]+ follows an activated state in the presence of HCOOH to liberate H2 and generate the [Cu(N3Q3)(OH2)]2+.
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Affiliation(s)
- Aman Mishra
- Artificial Photosynthesis Laboratory, Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
| | - Diship Srivastava
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India
| | - Dev Raj
- Artificial Photosynthesis Laboratory, Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
| | - Niladri Patra
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India
| | - Sumanta Kumar Padhi
- Artificial Photosynthesis Laboratory, Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
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3
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Raj M, Makhal K, Raj D, Mishra A, Mallik BS, Padhi SK. Electrocatalytic hydrogen evolution by a dinuclear copper complex and mechanistic elucidation through DFT studies. Dalton Trans 2023; 52:17797-17809. [PMID: 37781897 DOI: 10.1039/d3dt02733c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
A novel dinuclear copper complex, [CuII2(L1)2] (L1 = 2-{[2-(8-hydroxyquinolin-2-yl)-1H-benzimidazol-1-yl]methyl}quinolin-8-ol) was synthesised and characterised through various spectroscopic techniques. This dinuclear complex (as an electrocatalyst) was employed to examine the catalytic ability towards an electrochemical hydrogen evolution reaction (HER). Redox studies in 95/5 (v/v) DMF/H2O with the addition of 30-equivalent AcOH (acid source) led to higher catalytic activities for the HER. The evolved H2, as the resultant product, was detected and confirmed from gas chromatography to afford a faradaic efficiency of 93% at an applied potential of -1.9 V vs. SCE. Based upon measurements of open-circuit potential and electrocatalytic responses, the mechanistic route for the reduction process using [CuII2(L1)2] was elucidated. Density functional theory studies reveal that through a concerted proton-coupled electron transfer (PCET) path, the HER proceeded via the formation of a Cu-H bond with a low activation energy for the dehydrogenation reaction.
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Affiliation(s)
- Manaswini Raj
- Artificial Photosynthesis Laboratory, Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
| | - Koushik Makhal
- Department of Chemistry, Indian Institute of Technology Hyderabad, Sangareddy, 502284, Telangana, India
| | - Dev Raj
- Artificial Photosynthesis Laboratory, Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
| | - Aman Mishra
- Artificial Photosynthesis Laboratory, Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
| | - Bhabani S Mallik
- Department of Chemistry, Indian Institute of Technology Hyderabad, Sangareddy, 502284, Telangana, India
| | - Sumanta Kumar Padhi
- Artificial Photosynthesis Laboratory, Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826004, India.
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Das KM, Pal A, Adarsh NN, Thakur A. A novel quinoline-based NNN-pincer Cu(II) complex as a superior catalyst for oxidative esterification of allylic C(sp 3)-H bonds. Org Biomol Chem 2022; 20:3540-3549. [PMID: 35393991 DOI: 10.1039/d2ob00220e] [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
We report for the first time that the quinoline-based NNN-pincer Cu(II) complex acts as an air stable superior catalyst for the oxidative cross-coupling of the allyl sp3 C-H bond with an acid for the synthesis of allyl esters in a homogeneous system at ambient temperature. The synthesized catalyst, 1, has been well characterized by various analytical techniques (HRMS, single crystal X-ray diffraction, CV, EPR, UV-vis spectroscopy) and showed excellent catalytic activity for the oxidative esterification of allylic C(sp3)-H bonds at 40 °C within a very short period of time (1 h) using only 1 mol% of the catalyst. A wide variety of aromatic allylic esters were synthesized in moderate to good yields, which could be extended to aliphatic allyl esters as well.
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Affiliation(s)
- Krishna Mohan Das
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Adwitiya Pal
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
| | - Nayarassery N Adarsh
- Chemistry and Biomolecular Science, Clarkson University, 8 Clarkson Ave., Potsdam, New York, 13699, USA
| | - Arunabha Thakur
- Department of Chemistry, Jadavpur University, Kolkata-700032, India.
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Exploring the Potential of Water-Soluble Cu(II) Complexes with MPA–CdTe Quantum Dots for Photoinduced Electron Transfer. Catalysts 2022. [DOI: 10.3390/catal12040422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Three water-soluble copper complexes based on the amine/pyridine functionalities were investigated, along with quantum dots, as a catalyst–photosensitizer assembly, respectively, for fundamental understanding of photoinduced electron transfer. Luminescence quenching and lifetime measurements were performed to try and establish the actual process that leads to the quenching, such as electron transfer, energy transfer, or complex formation (static quenching). Cyclic voltammetry and dynamic light scattering experiments were also performed. Irrespective of the similar reduction potentials of the three complexes, very different photoluminescence properties were observed.
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6
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Rajak S, Vu NN, Kaur P, Duong A, Nguyen-Tri P. Recent progress on the design and development of diaminotriazine based molecular catalysts for light-driven hydrogen production. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214375] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Raj D, Kumar Padhi S. The sporadic μ-pyridine bridge in transition metal complexes: A real bond or an interaction? Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214238] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Merabet L, Vologzhanina AVV, Setifi Z, Kaboub L, Setifi F. Topological Motifs in Dicyanamides of Transition Metals. CrystEngComm 2022. [DOI: 10.1039/d2ce00485b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dicyanamides of d-metals provide a wide range of magnetic properties tuned by external cations, encapsulated ions and coordination modes of anions. Analysis of molecular, one-periodic (1D chain), two-periodic (2D layered)...
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9
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Rai S, Akhter SS, Padhi SK. Electrocatalytic hydrogen evolution by molecular Cu(II) catalysts. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Singh C, Haldar A, Basu O, Das SK. Devising a Polyoxometalate-Based Functional Material as an Efficient Electrocatalyst for the Hydrogen Evolution Reaction. Inorg Chem 2021; 60:10302-10314. [PMID: 34185987 DOI: 10.1021/acs.inorgchem.1c00734] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Hydrogen is the solution to all the problems associated with the energy crisis. Generating hydrogen from water splitting is one of the greener approaches, but it requires an efficient catalyst that is economical for the bulk production of hydrogen. The transition metal-aqua coordination complexes, which are otherwise inactive/unstable for electrochemical hydrogen evolution reaction (HER) activity, can efficiently be utilized for the same by attaching these metal-aqua species on a stable support. With a similar approach, we have synthesized and structurally characterized a two-dimensional polyoxometalate (POM)-copper complex hybrid that supports a copper(II)-aqua-bypyridine complex with a molecular formula of the overall system, [{CuII(2,2'-bpy)(H2O)2}][{CoIIWVI12O40}{CuII(2,2'-bpy)(H2O)}{CuII(2,2'-bpy)}]·2H2O (1). The bis(aqua)-mono(bipyridine) Cu(II)-complex fragment {CuII(2,2'-bpy)(H2O)2}2+, attached to the two-dimensional POM-Cu-complex support, acts as an active catalytic center that catalyzes the electrochemical HER. The electrochemical studies done for this work enabled us to understand the role of compound 1 as an electrocatalyst for the HER in near-neutral medium (pH 4.8), under buffered conditions (acetate buffer). Through detailed electrochemical experiments including controlled ones, we understand that compound 1 follows a proton-coupled electron transfer (PCET) pathway with one proton and one electron involvement in the HER. The overpotential required to achieve a current density of 1 mA/cm2 is found to be 520 mV with a Faradaic efficiency of 81%.
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Affiliation(s)
- Chandani Singh
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Atanu Haldar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Olivia Basu
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Samar K Das
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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11
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Recent progress in homogeneous light-driven hydrogen evolution using first-row transition metal catalysts. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.119950] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Pavlidis N, Kofinas A, Papanikolaou MG, Miras HN, Drouza C, Kalampounias AG, Kabanos TA, Konstandi M, Leondaritis G. Synthesis, characterization and pharmacological evaluation of quinoline derivatives and their complexes with copper(ΙΙ) in in vitro cell models of Alzheimer's disease. J Inorg Biochem 2021; 217:111393. [PMID: 33610031 DOI: 10.1016/j.jinorgbio.2021.111393] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/30/2021] [Accepted: 02/05/2021] [Indexed: 12/17/2022]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder of the central nervous system. The main pathophysiological mechanisms involve cholinergic neurotransmission, beta-amyloid (Αβ) and Tau proteins, several metal ions and oxidative stress, among others. Current drugs offer only relief of symptoms and not a cure of AD. Accumulating evidence suggests that multifunctional compounds, targeting multiple pathophysiological mechanisms, may have a great potential for the treatment of AD. In this study, we report on the synthesis and physicochemical characterization of four quinoline-based metal chelators and their respective copper(II) complexes. Most compounds were non-toxic at concentrations ≤5 μM. In neuroprotection studies employing undifferentiated and differentiated SH-SY5Y cells, the metal chelator N2,N6-di(quinolin-8-yl)pyridine-2,6-dicarboxamide (H2dqpyca) appeared to exert significant neuroprotection against both, Aβ peptide- and H2O2-induced toxicities. The copper(II) complex [CuII(H2bqch)Cl2].3H2O (H2bqch = N,N'-Bis(8-quinolyl)cyclohexane-1,2-diamine) also protected against H2O2-induced toxicity, with a half-maximal effective concentration of 80 nM. Molecular docking simulations, using the crystal structure of the acetylcholinesterase (AChE)-rivastigmine complex as a template, indicated a strong interaction of the metal chelator H2dqpyca, followed by H2bqch, with both the peripheral anionic site and the catalytic active site of AChE. In conclusion, the sufficient neuroprotection provided by the metal chelator H2dqpyca and the copper(II) complex [CuII(H2bqch)Cl2].3H2O along with the evidence for interaction between H2dqpyca and AChE, indicate that these compounds have the potential and should be further investigated in the framework of preclinical studies employing animal models of AD as candidate multifunctional lead compounds for the treatment of the disease.
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Affiliation(s)
- Nikolaos Pavlidis
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece; Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
| | - Aristeidis Kofinas
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece.
| | - Michael G Papanikolaou
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
| | - Haralampos N Miras
- West CHEM, School of Chemistry, University of Glasgow, Glasgow G12 8QQ, UK.
| | - Chryssoula Drouza
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Limassol 3036, Cyprus.
| | - Angelos G Kalampounias
- Physical Chemistry Laboratory, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece; Institute of Materials Science and Computing, University Research Center of Ioannina (URCI), Ioannina 45110, Greece.
| | - Themistoklis A Kabanos
- Section of Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, Ioannina 45110, Greece.
| | - Maria Konstandi
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece.
| | - George Leondaritis
- Department of Pharmacology, Faculty of Medicine, University of Ioannina, Ioannina 45110, Greece.
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13
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Abudayyeh AM, Schott O, Feltham HLC, Hanan GS, Brooker S. Copper catalysts for photo- and electro-catalytic hydrogen production. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01247e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Square planar 1, square pyramidal 2 and trigonal bipyramidal 3 copper complexes are poor catalysts for hydrogen evolution (HER) under photocatalytic conditions, whereas 1 is, or forms, a good and enduring electrocatalyst for HER, but 2 and 3 do not.
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Affiliation(s)
- Abdullah M. Abudayyeh
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Otago
- Dunedin 9054
- New Zealand
| | - Olivier Schott
- Départment de Chimie
- Université de Montréal
- Montréal
- Canada
| | - Humphrey L. C. Feltham
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Otago
- Dunedin 9054
- New Zealand
| | - Garry S. Hanan
- Départment de Chimie
- Université de Montréal
- Montréal
- Canada
| | - Sally Brooker
- Department of Chemistry and the MacDiarmid Institute for Advanced Materials and Nanotechnology
- University of Otago
- Dunedin 9054
- New Zealand
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14
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Beyene BB, Yibeltal AW, Hung C. Highly efficient electrocatalytic hydrogen evolution from neutral aqueous solution by water soluble copper (II) porphyrin. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119929] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Rai S, Padhi SK. Effectual electrocatalytic proton and water reduction by CuII terpyridine scaffolds. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.137277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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A flexible homoleptic pentadentate Cu(II) molecular catalyst for effective proton and water reduction. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136614] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Padhi SK, Rai S, Akhter SS. Redox-Induced Structural Switching through Sporadic Pyridine-Bridged CoIICoII Dimer and Electrocatalytic Proton Reduction. Inorg Chem 2020; 59:7810-7821. [DOI: 10.1021/acs.inorgchem.0c00911] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sumanta Kumar Padhi
- Artificial Photosynthesis Laboratory, Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India 826004
| | - Surabhi Rai
- Artificial Photosynthesis Laboratory, Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India 826004
| | - Sk Samim Akhter
- Artificial Photosynthesis Laboratory, Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India 826004
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18
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Rajak S, Schott O, Kaur P, Maris T, Hanan GS, Duong A. Synthesis, crystal structure, characterization of pyrazine diaminotriazine based complexes and their systematic comparative study with pyridyl diaminotriazine based complexes for light-driven hydrogen production. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114412] [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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19
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Papanikolaou MG, Elliott A, McAllister J, Gallos JK, Keramidas AD, Kabanos TA, Sproules S, Miras HN. Electrocatalytic hydrogen production by dinuclear cobalt(ii) compounds containing redox-active diamidate ligands: a combined experimental and theoretical study. Dalton Trans 2020; 49:15718-15730. [PMID: 33146215 DOI: 10.1039/d0dt02617d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The chiral dicobalt(ii) complex [CoII2(μ2-L)2] (1) (H2L = N2,N6-di(quinolin-8-yl)pyridine-2,6-dicarboxamide) and its tert-butyl analogue [CoII2(μ2-LBu)2] (2) were structurally characterized and their catalytic evolution of H2 was investigated.
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Affiliation(s)
| | | | - James McAllister
- West CHEM
- School of Chemistry
- University of Glasgow
- Glasgow G12 8QQ
- UK
| | - John K. Gallos
- Department of Chemistry
- Aristotle University of Thessaloniki
- Thessaloniki GR 541 24
- Greece
| | | | | | - Stephen Sproules
- West CHEM
- School of Chemistry
- University of Glasgow
- Glasgow G12 8QQ
- UK
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20
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Layek S, Agrahari B, Dey S, Ganguly R, Pathak DD. Copper(II)-faciliated synthesis of substituted thioethers and 5-substituted 1H-tetrazoles: Experimental and theoretical studies. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.06.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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21
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Dalle K, Warnan J, Leung JJ, Reuillard B, Karmel IS, Reisner E. Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes. Chem Rev 2019; 119:2752-2875. [PMID: 30767519 PMCID: PMC6396143 DOI: 10.1021/acs.chemrev.8b00392] [Citation(s) in RCA: 421] [Impact Index Per Article: 84.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Indexed: 12/31/2022]
Abstract
The synthesis of renewable fuels from abundant water or the greenhouse gas CO2 is a major step toward creating sustainable and scalable energy storage technologies. In the last few decades, much attention has focused on the development of nonprecious metal-based catalysts and, in more recent years, their integration in solid-state support materials and devices that operate in water. This review surveys the literature on 3d metal-based molecular catalysts and focuses on their immobilization on heterogeneous solid-state supports for electro-, photo-, and photoelectrocatalytic synthesis of fuels in aqueous media. The first sections highlight benchmark homogeneous systems using proton and CO2 reducing 3d transition metal catalysts as well as commonly employed methods for catalyst immobilization, including a discussion of supporting materials and anchoring groups. The subsequent sections elaborate on productive associations between molecular catalysts and a wide range of substrates based on carbon, quantum dots, metal oxide surfaces, and semiconductors. The molecule-material hybrid systems are organized as "dark" cathodes, colloidal photocatalysts, and photocathodes, and their figures of merit are discussed alongside system stability and catalyst integrity. The final section extends the scope of this review to prospects and challenges in targeting catalysis beyond "classical" H2 evolution and CO2 reduction to C1 products, by summarizing cases for higher-value products from N2 reduction, C x>1 products from CO2 utilization, and other reductive organic transformations.
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Affiliation(s)
| | | | - Jane J. Leung
- Christian Doppler Laboratory
for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Bertrand Reuillard
- Christian Doppler Laboratory
for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Isabell S. Karmel
- Christian Doppler Laboratory
for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Erwin Reisner
- Christian Doppler Laboratory
for Sustainable SynGas Chemistry, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
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22
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Agrahari B, Layek S, Ganguly R, Pathak DD. Synthesis and crystal structures of salen-type Cu(ii) and Ni(ii) Schiff base complexes: application in [3+2]-cycloaddition and A3-coupling reactions. NEW J CHEM 2018. [DOI: 10.1039/c8nj01718b] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis and characterisation of two new salen-type Schiff base complexes of the type [Cu(L)]·0.5H2O and [Ni(L)], and their application in the synthesis of 5-substituted 1H-tetrazoles and propargylamines are described.
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Affiliation(s)
- Bhumika Agrahari
- Department of Applied Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad-826004
- India
| | - Samaresh Layek
- Department of Applied Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad-826004
- India
| | - Rakesh Ganguly
- Division of Chemistry & Biological Chemistry
- Nanyang Technological University
- Singapore
| | - Devendra D. Pathak
- Department of Applied Chemistry
- Indian Institute of Technology (ISM)
- Dhanbad-826004
- India
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