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Saha M, Mandal S, Sarkar S, Biswas A, Ghati A, Cordes DB, Slawin AMZ, Saha NC. Anticancer, antimicrobial and photocatalytic activities of a new pyrazole containing thiosemicarbazone ligand and its Co(III) and Ni(II) complexes: Synthesis, spectroscopic characterization and X-ray crystallography. J Inorg Biochem 2024; 257:112577. [PMID: 38714060 DOI: 10.1016/j.jinorgbio.2024.112577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 03/28/2024] [Accepted: 04/23/2024] [Indexed: 05/09/2024]
Abstract
A new pyrazole based thiosemicarbazone ligand, 5-methyl-3-formylpyrazole-N(4)-isopropylthiosemicarbazone, (HMPzNHPri) (compound I), and its cobalt(III) and nickel(II) complexes, [Co(MPzNHPri)2]Cl (compound II) and [Ni(HMPzNHPri)2]Br2 (compound III), respectively, have been synthesized and characterized through various physico-chemical and spectroscopic studies. Both the reported Co(III) and Ni(II) complexes are cationic in nature and behave as 1:1 and 1:2 electrolytes in MeOH, respectively. Electronic spectral features of the complexes have classified them as distorted octahedral ones. IR spectral data (4000-450 cm-1) have suggested a monoprotic tridentate (NNS) function of compound I coordinating to the Co(III) ion via the pyrazolyl (tertiary) ring nitrogen, azomethine nitrogen and thiolato sulphur atom; while for compound III, compound I has been found to act as neutral NNS tridentate one, coordinating to Ni(II) via the pyrazolyl iminic nitrogen, azomethine nitrogen and thioketo sulphur. Structural features of all the compounds are confirmed by the single crystal X-ray data. All the compounds reported here have been found to exhibit significant photocatalytic activity towards degradation of Methylene Blue (MB) under UV radiation. Anticancer activity of all the three compounds against cancer cell lines (HeLa and A549) and a normal cell line (HEK293) have been investigated. Compound II has been found to be more efficient against the human cervical cancer cell (HeLa) and the lung cancer cell (A549) than compounds I and III. The ligand and both the complexes display potential activities against both gram-positive (Bacillus subtilis MTCC 7193) and gram-negative bacteria (E. coli MTCC 1610).
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Affiliation(s)
- Manan Saha
- Inorganic Chemistry Section, Department of Chemistry, University of Kalyani, 741235 Nadia, West Bengal, India; Government General Degree College, Chapra, Sikra, Padmamala, 741123 Nadia, West Bengal, India
| | - Suman Mandal
- Inorganic Chemistry Section, Department of Chemistry, University of Kalyani, 741235 Nadia, West Bengal, India
| | - Solanki Sarkar
- Cell & Molecular Biology Laboratory, Department of Zoology, University of Kalyani, 741235 Nadia, West Bengal, India
| | - Arunima Biswas
- Cell & Molecular Biology Laboratory, Department of Zoology, University of Kalyani, 741235 Nadia, West Bengal, India
| | - Amit Ghati
- Department of Microbiology, Barrackpore Rastraguru Surendranath College, 700120, West Bengal, India
| | - David B Cordes
- School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, UK
| | - Alexandra M Z Slawin
- School of Chemistry, University of St Andrews, North Haugh, St Andrews, Fife KY16 9ST, UK
| | - Nitis Chandra Saha
- Inorganic Chemistry Section, Department of Chemistry, University of Kalyani, 741235 Nadia, West Bengal, India.
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Jana A, Sahoo S, Paul S, Sahoo S, Jayabaskaran C, Chakravarty AR. Photodynamic Therapy with Targeted Release of Boron-Dipyrromethene Dye from Cobalt(III) Prodrugs in Red Light. Inorg Chem 2024; 63:6822-6835. [PMID: 38560761 DOI: 10.1021/acs.inorgchem.4c00244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Boron-dipyrromethene (BODIPY) dyes are promising photosensitizers for cellular imaging and photodynamic therapy (PDT) owing to their excellent photophysical properties and the synthetically tunable core. Metalation provides a convenient way to overcome the drawbacks arising from their low aqueous solubility. New photo-/redox-responsive Co(III) prodrug chaperones are developed as anticancer PDT agents for efficient cellular delivery of red-light-active BODIPY dyes. The photobiological activity of heteroleptic Co(III) complexes derived from tris(2-pyridylmethyl)amine (TPA) and acetylacetone-conjugated PEGylated distyryl BODIPY (HL1) or its dibromo analogue (HL2), [CoIII(TPA)(L1/L2)](ClO4)2 (1 and 2), are investigated. The Co(III)/Co(II) redox potential is tuned using the Co(III)-TPA scaffold. Complex 1 displays the in vitro release of BODIPY on red light irradiation. Complex 2, having good singlet oxygen quantum yield (ΦΔ ∼ 0.28 in DMSO), demonstrates submicromolar photocytotoxicity to HeLa cancer cells (IC50 ≈ 0.23 μM) while being less toxic to HPL1D normal cells in red light. Cellular imaging using the emissive complex 1 shows mitochondrial localization and significant penetration into the HeLa tumor spheroids. Complex 2 shows supercoiled DNA photocleavage activity and apoptotic cell death through phototriggered generation of reactive oxygen species. The Co(III)-BODIPY prodrug conjugates exemplify new type of phototherapeutic agents with better efficacy than the organic dyes alone in the phototherapeutic window.
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Affiliation(s)
- Avishek Jana
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
| | - Subhadarsini Sahoo
- Department of Biochemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
| | - Subhadeep Paul
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
| | - Somarupa Sahoo
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
| | - Chelliah Jayabaskaran
- Department of Biochemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
| | - Akhil R Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C.V. Raman Avenue, Bangalore 560012, India
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Park SJ, Patil M, Yeom GS, Bendre R, Kuwar A, Nimse SB. A dual-function fluorescence 'turn-on' probe that allows Zn (II) bioimaging and quantification of water in the organic solvent. Methods 2023; 218:84-93. [PMID: 37536375 DOI: 10.1016/j.ymeth.2023.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/11/2023] [Accepted: 07/23/2023] [Indexed: 08/05/2023] Open
Abstract
Herein, a Eugenol-derived fluorescence 'turn-on' probe FLHE was synthesized by condensing 2-((3-(trifluoromethyl)phenyl)amino)benzohydrazide with 5-allyl-2-hydroxy-3-methoxybenzaldehyde. FLHE demonstrated very low fluorescence in the studied organic solvents of varying polarities. However, upon titration with Zn2+ in HEPES buffer (pH = 7.4, 50% ACN, v/v), FLHE showed 40-fold higher fluorescence signals indicating the formation of the FLHE-Zn2+ complex. The fluorescence turn-on phenomenon upon FLHE-Zn2+ complex formation results from a chelation-enhanced fluorescence (CHEF) effect. The FLHE-Zn2+ complexation demonstrated a stokes shift of 156 nm (λex = 350 nm, λem = 506 nm) and an about 33-fold increase in the quantum yield (FLHE, Φ = 0.007; FLHE-Zn2+ complex, Φ = 0.23). The binding constant (Ka) determined by the Benesi-Hildebrand plot for interaction between FLHE and Zn2+ was 5.33 × 103 M-1. FLHE demonstrated a LOD of 31.8 nM for detecting Zn2+ in the environmental samples without interference from other cations and anions. FLHE-based paper strip (FLHE-PS) assay was developed to quantify the Zn2+ ions in water and the water content of organic solvent. FLHE-PS allows the detection of Zn2+ in aqueous solutions with a LOD of 63.2 nM and quantifying water in acetonitrile with a LOD of 0.14%. These results indicate that the FLHE has high applicability for detecting Zn2+ in living cells and environmental samples and detecting the presence of water in the organic solvents.
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Affiliation(s)
- Su Jeong Park
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 24252, Republic of Korea
| | - Manohar Patil
- School of Chemical Science, North Maharashtra University, Jalgaon 425001, India
| | - Gyu Seong Yeom
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 24252, Republic of Korea
| | - Ratnamala Bendre
- School of Chemical Science, North Maharashtra University, Jalgaon 425001, India
| | - Anil Kuwar
- School of Chemical Science, North Maharashtra University, Jalgaon 425001, India.
| | - Satish Balasaheb Nimse
- Institute of Applied Chemistry and Department of Chemistry, Hallym University, Chuncheon 24252, Republic of Korea.
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Transition Metal Complexes of Thiosemicarbazides, Thiocarbohydrazides, and Their Corresponding Carbazones with Cu(I), Cu(II), Co(II), Ni(II), Pd(II), and Ag(I)-A Review. Molecules 2023; 28:molecules28041808. [PMID: 36838796 PMCID: PMC9962565 DOI: 10.3390/molecules28041808] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/17/2023] Open
Abstract
This review focuses on some interesting and recent applications of transition metals towards the complexation of thiosemicarbazides, thiocarbohydrazides, and their corresponding carbazones. We started the review with a description of the chosen five metals, including Cu[Cu(I), Cu(II], Co(II), Ni(II), Pd(II), and Ag(I) and their electronic configurations. The stability of the assigned complexes was also discussed. We shed light on different routes describing the synthesis of these ligands. We also reported on different examples of the synthesis of Cu(I), Cu(II), Co(II), Ni(II), Ag(I), and Pd(II) of thiosemicarbazide and thiocarbohydrazide complexes (until 2022). This review also deals with a summary of the fruitful use of metal complexes of thiosemicarbazones and thiocarbazones ligands in the field of catalysis. Finally, this recent review focuses on the applications of these complexes related to their biological importance.
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Ramezanipoor S, Parvarinezhad S, Salehi M, Grześkiewicz AM, Kubicki M. Crystal structures, electrochemical properties and theoretical studies of three New Zn(II), Mn(III) and Co(III) Schiff base complexes derived from 2-hydroxy-1-allyliminomethyl-naphthalen. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Electrochemical investigation of DNA-metal complex interactions and development of a highly sensitive electrochemical biosensor. Anal Biochem 2022; 652:114738. [PMID: 35597268 DOI: 10.1016/j.ab.2022.114738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 05/05/2022] [Accepted: 05/14/2022] [Indexed: 01/29/2023]
Abstract
Metal ion-DNA interactions are important in nature as they often change the genetic material's structure and function. In this work, new Tb complex of TbCl3 (tris(8-hydroxyquinoline-5-sulfonic acid) terbium) (Tb(QS)3) was used as an electrochemical indicator for investigation of DNA-metal interaction and then a new DNA biosensor was designed using this complex. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to study the interaction of Tb(QS)3 with double-stranded DNA (ds-DNA). It was found that Tb(QS)3 presented an excellent electrochemical activity on carbon paste electrode (CPE) and could intercalate into the double helix of double-stranded DNA. The interaction mechanism was elucidated in DNA solution and DNA modified carbon paste electrode by using differential pulse voltammetry and cyclic voltammetry. The binding ratio between this complex and ds-DNA was calculated to be 1:1. The extent of hybridization was evaluated on the basis of the difference between signals of Tb(QS)3 with probe DNA before and after hybridization with complementary DNA. With this approach, target DNA could be detected in the range from 0.03 to 0.185 μM with detection limit of 0.021 μM. The interaction mode between Tb(QS)3 and DNA was found to be mainly intercalative interaction.
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Arumugham MN, Gopinathan H, Sumithra M, Baskaran S, Kumar R, Kaviani S. New cobalt(III) complex with triethylenetetramine and 2,2′-bipyridine: synthesis, crystal structure, DNA interaction, hirshfeld surface, DFT analysis, and cytotoxicity. INORG NANO-MET CHEM 2022. [DOI: 10.1080/24701556.2022.2059087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M. N. Arumugham
- Department of Chemistry, Thiruvalluvar University, Vellore, Tamil Nadu, India
| | - H. Gopinathan
- Department of Chemistry, Thiruvalluvar University, Vellore, Tamil Nadu, India
| | - M. Sumithra
- Department of Chemistry, Thiruvalluvar University, Vellore, Tamil Nadu, India
| | - S. Baskaran
- Department of Chemistry, Arignar Anna Government Arts College, Cheyyar, Tamil Nadu, India
| | - R. Kumar
- Department of Chemistry, MCM DAV College, Kangra, Himachal Pradesh, India
| | - Sadegh Kaviani
- Research Cener for Modelling and Computational Sciences, Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
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Srivastava AK, Mondal A, Konar S, Pal S. A tetra Co(II/III) complex with an open cubane Co 4O 4 core and square-pyramidal Co(II) and octahedral Co(III) centres: bifunctional electrocatalytic activity towards water splitting at neutral pH. Dalton Trans 2022; 51:4510-4521. [PMID: 35234225 DOI: 10.1039/d1dt04086c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The reaction of 2,6-diformyl-4-methylphenol, 4-methoxybenzoylhydrazine and Co(OAc)2·4H2O in 1 : 2 : 2 mole ratio in methanol under aerobic conditions produced in 61% yield a tetranuclear complex having the molecular formula [CoIICoIII(μ-OAc)(μ3-OH)(μ-L)]2 where OAc- and L3- represent acetate and N',N''-(5-methyl-2-oxido-1,3-phenylene)bis(methan-1-yl-1-ylidene)bis(4-methoxybenzoylhydrazonate), respectively. The elemental analysis and the mass spectrometric data confirmed the molecular formula of the complex. It is electrically non-conducting and paramagnetic. The complex crystallized as acetonitrile solvate. The X-ray structure shows that each Co(II) centre has a distorted square-pyramidal NO4 coordination sphere, while each Co(III) centre is in a distorted octahedral NO5 environment. The four metal atoms and the four bridging O-atoms form an open cubane type Co4O4 motif. In the crystal lattice, self-assembly of the solvated complex via intermolecular O-H⋯O interaction leads to a two-dimensional network structure. The infrared and electronic spectroscopic features of the complex are consistent with its molecular structure. Cryomagnetic measurements together with theoretical calculations suggest the presence of easy-axis anisotropy for the square-pyramidal Co(II) centres. The complex is redox-active and displays metal centred oxidation and reduction responses on the anodic and cathodic sides, respectively, of the Ag/AgCl electrode. Bifunctional heterogeneous electrocatalytic activity of the complex towards O2 and H2 evolution reactions (OER and HER) in neutral aqueous medium has been explored in detail.
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Affiliation(s)
| | - Arpan Mondal
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462066, India
| | - Sanjit Konar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462066, India
| | - Samudranil Pal
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, India.
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Patil DY, Khadke NB, Patil AA, Borhade AV. Amino-Quinoline Based Colorimetric Chemosensor for Cu2+ Detection. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822010105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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10
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Patil MM, Park SJ, Yeom GS, Bendre RS, Kuwar A, Nimse SB. Fluorescence 'turn-on' probe for nanomolar Zn (II) detection in living cells and environmental samples. NEW J CHEM 2022. [DOI: 10.1039/d2nj02012b] [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
Herein, a Schiff base ligand FHE was synthesized by condensing 5-allyl-2-hydroxy-3-methoxybenzaldehyde, a eugenol derivative with a derivative furan-2-carbohydrazide. FHE alone showed low fluorescence signals due to the intramolecular charge transfer...
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Naskar B, Das Mukhopadhyay C, Goswami S. A new diformyl phenol based chemosensor selectively detects Zn 2+ and Co 2+ in the nanomolar range in 100% aqueous medium and HCT live cells. NEW J CHEM 2022. [DOI: 10.1039/d2nj01478e] [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
A new diformyl phenol based chemosensor that can sense Zn2+ and Co2+ in the nanomolar range in 100% aqueous solution and in HCT cells was explored.
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Affiliation(s)
- Barnali Naskar
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
- Department of Chemistry, Lalbaba College, University of Calcutta, Howrah 711202, India
| | - Chitrangada Das Mukhopadhyay
- Centre for Healthcare Science & Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
| | - Sanchita Goswami
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
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Huang H, Li YY, Li HR. SYNTHESIS AND ANTICANCER ACTIVITY AGAINST RETINOBLASTOMA OF NOVEL Zn(II) AND Co(II) COMPLEXES. J STRUCT CHEM+ 2021. [DOI: 10.1134/s002247662109016x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Bowman EA, England BL, Patterson MA, Price NS, Stepler KE, Curnutte HA, Lease RE, Bradley CA, Craig PR. Pre-assembly required: Nickel(II) complexes containing a Schiff-base ligand derived from tris(2-aminoethyl)amine and acetylacetone, salicylaldehyde, or ortho-vanillin. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120415] [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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Heins SP, Schneider PE, Speelman AL, Hammes-Schiffer S, Appel AM. Electrocatalytic Oxidation of Alcohol with Cobalt Triphosphine Complexes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00781] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Spencer P. Heins
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | - Patrick E. Schneider
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Amy L. Speelman
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
| | | | - Aaron M. Appel
- Center for Molecular Electrocatalysis, Pacific Northwest National Laboratory, P.O. Box 999, K2-57, Richland, Washington 99352, United States
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Synthesis, crystal structure and ligand based catalytic activity of octahedral salen Schiff base Co(III) compounds. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129779] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Antioxidant, antimicrobial, DNA binding and cleavage studies of novel Co(II), Ni(II) and Cu(II) complexes of N, O donor Schiff bases: Synthesis and spectral characterization. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129606] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Frei A, King AP, Lowe GJ, Cain AK, Short FL, Dinh H, Elliott AG, Zuegg J, Wilson JJ, Blaskovich MAT. Nontoxic Cobalt(III) Schiff Base Complexes with Broad-Spectrum Antifungal Activity. Chemistry 2021; 27:2021-2029. [PMID: 33231906 PMCID: PMC7855930 DOI: 10.1002/chem.202003545] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/03/2020] [Indexed: 12/21/2022]
Abstract
Resistance to currently available antifungal drugs has quietly been on the rise but overshadowed by the alarming spread of antibacterial resistance. There is a striking lack of attention to the threat of drug-resistant fungal infections, with only a handful of new drugs currently in development. Given that metal complexes have proven to be useful new chemotypes in the fight against diseases such as cancer, malaria, and bacterial infections, it is reasonable to explore their possible utility in treating fungal infections. Herein we report a series of cobalt(III) Schiff base complexes with broad-spectrum antifungal activity. Some of these complexes show minimum inhibitory concentrations (MIC) in the low micro- to nanomolar range against a series of Candida and Cryptococcus yeasts. Additionally, we demonstrate that these compounds show no cytotoxicity against both bacterial and human cells. Finally, we report the first in vivo toxicity data on these compounds in Galleria mellonella, showing that doses as high as 266 mg kg-1 are tolerated without adverse effects, paving the way for further in vivo studies of these complexes.
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Affiliation(s)
- Angelo Frei
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD4072Australia
| | - A. Paden King
- Department of Chemistry and Chemical BiologyCornell UniversityIthacaNY14853USA
| | - Gabrielle J. Lowe
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD4072Australia
| | - Amy K. Cain
- Department of Molecular SciencesMacquarie UniversitySydneyNSW2109Australia
| | - Francesca L. Short
- Department of Molecular SciencesMacquarie UniversitySydneyNSW2109Australia
| | - Hue Dinh
- Department of Molecular SciencesMacquarie UniversitySydneyNSW2109Australia
- Department of Biological SciencesMacquarie UniversitySydneyNSW2109Australia
| | - Alysha G. Elliott
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD4072Australia
| | - Johannes Zuegg
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD4072Australia
| | - Justin J. Wilson
- Department of Chemistry and Chemical BiologyCornell UniversityIthacaNY14853USA
| | - Mark A. T. Blaskovich
- Centre for Superbug SolutionsInstitute for Molecular BioscienceThe University of QueenslandSt. LuciaQLD4072Australia
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Kumari S, Ramesh A, Das B, Ray S. Zeolite-Y encapsulated cobalt(ii) Schiff-base complexes employed for photocatalytic dye-degradation and upcycling CO2. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01190h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Planar cobalt(ii) Schiff-base complexes show modified structural and functional properties after encapsulation inside zeolite-Y.
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Affiliation(s)
| | | | - Bidisa Das
- Technical Research Center (TRC) & School of Applied and Interdisciplinary Sciences (SAIS)
- Indian Association for the Cultivation of Science
- Kolkata 700032
- India
| | - Saumi Ray
- Birla Institute of Technology and Science
- Pilani
- India
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Cobalt(II) complexes of α-diimine derived from cycloalkylamines as controlling agents for organometallic mediated radical polymerization of vinyl acetate. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114870] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Roberts KF, Brue CR, Preston A, Baxter D, Herzog E, Varelas E, Meade TJ. Cobalt(III) Schiff base complexes stabilize non-fibrillar amyloid-β aggregates with reduced toxicity. J Inorg Biochem 2020; 213:111265. [PMID: 33059154 DOI: 10.1016/j.jinorgbio.2020.111265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/18/2020] [Accepted: 09/24/2020] [Indexed: 12/12/2022]
Abstract
The aggregation of amyloid-β (Aβ) is believed to be foundational to the pathogenesis of Alzheimer's disease (AD). In vitro aggregation kinetics have been shown to correlate with rates of disease progression in both AD patients and animal models, thus proving to be a useful metric for testing Aβ-targeted therapeutics. Here we present evidence of cobalt(III) Schiff base complex ([Co(acetylacetonate)(NH3)2]Cl; Co(III)-sb) modulation of Aβ aggregation kinetics by a variety of complementary techniques. These include Thioflavin T (ThT) fluorescence, circular dichroism (CD) spectroscopy, transmission electron microscopy (TEM), and atomic force microscopy (AFM). Our data was fitted to kinetic rate laws using a mathematical model developed by Knowles et al. in order to extract mechanistic information about the effect of Co(III)-sb on aggregation kinetics. Our analysis revealed that Co(III)-sb alters Aβ aggregation by decreasing the polymerization rate and increasing the nucleation rate, suggesting that Co(III)-sb causes Aβ to rapidly stabilize oligomeric species with reduced elongation into mature fibrils. This result was corroborated by TEM and AFM of Aβ aggregates in vitro. We also demonstrate that Aβ aggregate mixtures produced in the presence of Co(III)-sb exhibit decreased cytotoxicity compared to untreated samples.
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Affiliation(s)
- Kaleigh F Roberts
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, IL 60208, United States
| | - Christopher R Brue
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, IL 60208, United States
| | - Anna Preston
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, IL 60208, United States
| | - Damonick Baxter
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, IL 60208, United States
| | - Emma Herzog
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, IL 60208, United States
| | - Eleni Varelas
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, IL 60208, United States
| | - Thomas J Meade
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, Evanston, IL 60208, United States.
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21
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Bagautdinova RK, Aitbay GN, Kibardina LK, Strelnik AG, Burilov AR, Pudovik MA. Synthesis of New C-Alkyl-N-pyridoxylmethylbenzimidazoles. RUSS J GEN CHEM+ 2020. [DOI: 10.1134/s1070363220090261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Koyama K, Iijima K, Yoo D, Mori T. Transistor properties of salen-type metal complexes. RSC Adv 2020; 10:29603-29609. [PMID: 35521152 PMCID: PMC9055972 DOI: 10.1039/d0ra05449f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 08/03/2020] [Indexed: 02/05/2023] Open
Abstract
Schiff base complexes derived from salicylaldehyde and ethylene-, propylene-, and trans-1,2-cyclohexane-diamines exhibit p-channel transistor properties. The Cu complexes are open-shell compounds, but the oxidation and the hole transport occur at the highest occupied molecular orbital, where the singly occupied molecular orbital (SOMO) does not participate in conduction. Although Ni complexes tend to show larger mobilities than Cu complexes owing to the molecular planarity, the presence of SOMO is not harmful to the transistor properties. Schiff base complexes exhibit p-channel transistor properties irrespective of metal atoms because the SOMO does not participate in the conduction.![]()
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Affiliation(s)
- Kyohei Koyama
- Department of Materials Science and Engineering, Tokyo Institute of Technology Ookayama 2-12-1 Meguro-ku 152-8552 Japan
| | - Kodai Iijima
- Department of Materials Science and Engineering, Tokyo Institute of Technology Ookayama 2-12-1 Meguro-ku 152-8552 Japan
| | - Dongho Yoo
- Department of Materials Science and Engineering, Tokyo Institute of Technology Ookayama 2-12-1 Meguro-ku 152-8552 Japan
| | - Takehiko Mori
- Department of Materials Science and Engineering, Tokyo Institute of Technology Ookayama 2-12-1 Meguro-ku 152-8552 Japan
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23
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Kozak JJ, Gray HB, Garza-López RA. Structural stability of the SARS-CoV-2 main protease: Can metal ions affect function? J Inorg Biochem 2020; 211:111179. [PMID: 32736274 PMCID: PMC7365078 DOI: 10.1016/j.jinorgbio.2020.111179] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/08/2020] [Accepted: 07/10/2020] [Indexed: 02/06/2023]
Abstract
We have investigated the structural stability of the SARS (Severe acute respiratory syndrome)-CoV-2 main protease monomer (Mpro). We quantified the spatial and angular changes in the structure using two independent analyses, one based on a spatial metrics (δ, ratio), the second on angular metrics. The order of unfolding of the 10 helices in Mpro is characterized by beta vs alpha plots similar to those of cytochromes and globins. The longest turning region is anomalous in the earliest stage of unfolding. In an investigation of excluded-volume effects, we found that the maximum spread in average molecular-volume values for Mpro, cytochrome c-b562, cytochrome c’, myoglobin, and cytoglobin is ~10 Å3. This apparent universality is a consequence of the dominant contributions from six residues: ALA, ASP, GLU, LEU, LYS and VAL. Of the seven Mpro histidines, residues 41, 163, 164, and 246 are in stable H-bonded regions; metal ion binding to one or more of these residues could break up the H-bond network, thereby affecting protease function. Our analysis also indicated that metal binding to cysteine residues 44 and 145 could disable the enzyme. Covid-19 disease is produced by SARS (Severe acute respiratory syndrome)-CoV-2. Excluded volume in the folded SARS-CoV-2 main protease is estimated. Helix stabilities in the SARS-CoV-2 main protease differ dramatically. Metal ion binding could inhibit the SARS-CoV-2 main protease.
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Affiliation(s)
- John J Kozak
- Department of Chemistry, DePaul University, Chicago, IL 60604-6116, United States of America
| | - Harry B Gray
- Beckman Institute, California Institute of Technology, Pasadena, CA 91125, United States of America
| | - Roberto A Garza-López
- Department of Chemistry, Seaver Chemistry Laboratory, Pomona College, Claremont, CA 91711, United States of America.
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24
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Kaya B, Akyüz D, Karakurt T, Şahin O, Koca A, Ülküseven B. Cobalt(II)/(III) complexes bearing a tetradentate thiosemicarbazone: Synthesis, experimental and theoretical characterization, and electrochemical and antioxidant properties. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Büşra Kaya
- Department of Chemistry, Engineering Faculty Istanbul University‐Cerrahpasa 34320, Avcilar Istanbul Turkey
| | - Duygu Akyüz
- Department of Chemistry Gebze Technical University 41400, Gebze Kocaeli Turkey
| | - Tuncay Karakurt
- Department of Chemical and Process Engineering, Faculty of Engineering‐Architecture Kırsehir Ahi Evran University 40100, Kırsehir Turkey
| | - Onur Şahin
- Department of Occupat Health & Safety, Faculty of Health Sciences Sinop University Sinop TR‐57000 Turkey
| | - Atıf Koca
- Chemical Engineering Department, Engineering Faculty Marmara University Göztepe, Istanbul 34722 Turkey
| | - Bahri Ülküseven
- Department of Chemistry, Engineering Faculty Istanbul University‐Cerrahpasa 34320, Avcilar Istanbul Turkey
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25
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Bagautdinova RK, Kibardina LK, Burilov AR, Strelnik AG, Pudovik MA. Reactions of pyridoxal with aromatic diamines. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02663-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Abdulsalam S, Idris SO, Shallangwa GA, Onu AD. Reaction of N, N 1 -phenylene bis(salicyalideneiminato)cobalt(III) and l-cysteine in mixed aqueous medium: kinetics and mechanism. Heliyon 2020; 6:e03850. [PMID: 32382681 PMCID: PMC7199009 DOI: 10.1016/j.heliyon.2020.e03850] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 03/28/2020] [Accepted: 04/21/2020] [Indexed: 11/29/2022] Open
Abstract
The redox kinetics involving the reaction of N, N'-phenylenebis(salicyalideneiminato)cobalt(III) ([CoSalophen]+) and l-cysteine (LSH) was studied using pseudo-first order approach under the following conditions, [H+] = 1.0 × 10-3 mol/dm3, μ = 0.1 C2 mol/dm3 (NaCl), λmax = 470 nm and T = 27 ± 1 °C in DMSO: H2O; 1:4 v: v medium. The redox reaction was 1st order in both [CoSalophen+] and [LSH], with the overall 2nd order. Hydrogen ion concentration effect revealed the activeness of both the protonated and deprotonated form of the reductant, positive Brønsted-Debye salt effect and was also ion catalyzed. There was no evidence suggesting an intermediate complex of significant stability in the reaction. Free radical was detected to take part and as such the reasonable mechanistic pathway for the reaction is suggested to be outer-sphere, hence proposed.
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Affiliation(s)
- S Abdulsalam
- Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria
| | - S O Idris
- Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria
| | - G A Shallangwa
- Department of Chemistry, Ahmadu Bello University, Zaria, Nigeria
| | - A D Onu
- Department of Chemistry, Federal College of Education, Zaria, Nigeria
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27
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LeBlond T, Dinolfo PH. Density Functional Theory Prediction of the Electrocatalytic Mechanism of Proton Reduction by a Dicobalt Tetrakis(Schiff Base) Macrocycle. Inorg Chem 2020; 59:3764-3774. [PMID: 32133844 DOI: 10.1021/acs.inorgchem.9b03411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A dicobalt tetrakis(Schiff base) macrocycle has recently been reported to electrochemically catalyze the reduction of H+ to H2 in an acetonitrile solution. Density functional theory (DFT) calculations using the ωB97X-D functional are shown to produce structural and thermodynamic results in good agreement with the experimental data. A mechanistic model based on thermodynamics is developed that incorporates electrochemical and magnetic details of the complex, accounting for electron-spin reorganization of the metal center after redox steps. The model is validated through a comparison of the predicted electrochemical potentials with the irreversible cyclic voltammogram of [Co2LAc]+, which shows redox-coupled spin-crossover (RCSCO) behavior for the CoII/III transitions. Using our model, we predict the thermodynamically favored mechanism of H2 evolution by [Co2L]2+ to be one of heterolytic proton attack on a [CoII2L(μ-H)]+ species. Understanding the electronic details and thermodynamically preferred mechanism of this catalyst will aid in improving its efficiency and the future design of bimetallic Co-based H+ electrocatalysts. Also, this work will assist in the future DFT modeling of bimetallic RCSCO complexes.
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Affiliation(s)
- Tyler LeBlond
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 125 Cogswell Laboratory, 110 Eighth Street, Troy, New York 12180, United States
| | - Peter H Dinolfo
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 125 Cogswell Laboratory, 110 Eighth Street, Troy, New York 12180, United States
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28
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Śmiłowicz D, Metzler-Nolte N. Bioconjugates of Co(III) complexes with Schiff base ligands and cell penetrating peptides: Solid phase synthesis, characterization and antiproliferative activity. J Inorg Biochem 2020; 206:111041. [PMID: 32120161 DOI: 10.1016/j.jinorgbio.2020.111041] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 02/17/2020] [Accepted: 02/17/2020] [Indexed: 10/25/2022]
Abstract
In this work we synthesized a chelating Schiff base by a single condensation of salicylaldehyde with 3,4-diamino benzoic acid (1). This ligand was used further for complexation to CoCl2·6H2O under nitrogen. In the next step, three six-coordinate Co(III) complexes were synthesized by coordinating this complex with imidazole (2), 2-methyimidazole (3) and N-Boc-l-histidine methyl ester (4) (Boc: tert.-butoxycarbonyl) in axial positions with simultaneous oxidation of Co(II) to Co(III) under ambient environment. All Co(III) complexes were characterized by multinuclear NMR spectroscopy (1H, 13C and 59Co NMR), FT-IR, mass spectrometry and HPLC. The Co(III) complexes were conjugated to three different cell penetrating peptides: FFFF (P1), RRRRRRRRRGAL (P2) and FFFFRRRRRRRRRGAL (P3). Standard solid-phase peptide chemistry was used for the synthesis of cell penetrating peptides. Coupling of N-terminal peptides with the cobalt complexes, possessing a carboxylic group on the tetradentate Schiff base ligand, afforded Co(III)-peptide bioconjugates, which were purified by semi-preparative HPLC and characterized by analytical HPLC and mass spectrometry. The antiproliferative activity of the synthesized compounds was studied against different human tumour cell lines: lung cancer A549, liver cancer HepG2 and normal human fibroblasts GM5657T, in comparison with the activity of cisplatin as a reference drug. The bioconjugate 21 containing the Co complex 4 and the combined phenylalanine and polyarginine cell penetrating sequence P3 shows better activity against the liver cancer line HepG2 than the parent Co(III) complex 4.
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Affiliation(s)
- Dariusz Śmiłowicz
- Inorganic Chemistry I - Bioinorganic Chemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
| | - Nils Metzler-Nolte
- Inorganic Chemistry I - Bioinorganic Chemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany.
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29
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Abubakar S, Bala MD. Transfer Hydrogenation of Ketones Catalyzed by Symmetric Imino-N-heterocyclic Carbene Co(III) Complexes. ACS OMEGA 2020; 5:2670-2679. [PMID: 32095690 PMCID: PMC7033672 DOI: 10.1021/acsomega.9b03181] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
The synthesis of new moisture-sensitive imine-functionalized N-heterocyclic carbene (NHC) precursor salts [1-(2-[(hydroxyl-benzylidene)-amino]-ethyl)-3-R-3H-imidazole-1-ium bromide; R = methyl (1a), ethyl (1b), and benzyl (1c)] is reported. Subsequent deprotonation of 1a-c and coordination of the in situ generated NHC ligands to CoBr2 led to the isolation of air-stable six-coordinate Co(III) complexes 2a-c, respectively. All the salts and complexes were fully characterized. Single-crystal X-ray analysis of 2a and 2c showed octahedral Co centers hexacoordinated to two NHC carbons, two imine nitrogen atoms, and two phenolate oxygens in the form [C^N^O(Co3+)C^N^O]. The complexes were used in the catalytic transfer hydrogenation (CTH) of a range of ketones in 2-propanol as the solvent and hydrogen donor. Based on a low catalyst concentration of 0.4 mol %, significant conversions in the range of 70-99% were recorded at high turnover frequencies up to 1635 h-1. A mechanism to account for the steps involved in the CTH of cyclohexanone by complex 2a is proposed and supported by data from cyclic voltammetry, low-resolution mass spectrometry, UV, and IR spectroscopic techniques.
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30
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Meng T, Qin QP, Zou HH, Wang K, Liang FP. Eighteen 5,7-Dihalo-8-quinolinol and 2,2'-Bipyridine Co(II) Complexes as a New Class of Promising Anticancer Agents. ACS Med Chem Lett 2019; 10:1603-1608. [PMID: 31857834 PMCID: PMC6912862 DOI: 10.1021/acsmedchemlett.9b00356] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 10/30/2019] [Indexed: 12/18/2022] Open
Abstract
![]()
Here
we first report the design of a series of bis-chelate Co(II) 5,7-dihalo-8-quinolinol-phenanthroline
derivative complexes, [Co(py)(QL1)2] (Co1),
[Co(py)(QL2)2] (Co2), [Co(Phen)(QL1)2] (Co3), [Co(Phen)(QL2)2] (Co4), [Co(DPQ)(QL1)2]·(CH3OH)4 (Co5), [Co(DPQ)(QL2)2] (Co6), [Co(DPPZ)(QL1)2]·CH3OH (Co7), [Co(MDP)(QL1)2]·3H2O (Co8), [Co(ODP)(QL1)2]·CH3OH (Co9), [Co(PPT)(QL1)2]·CH3OH (Co10), [Co(ClPT)(QL1)2] (Co11), [Co(dpy)(QL3)2] (Co12), [Co(mpy)(QL1)2] (Co13), [Co(Phen)(QL4)2] (Co14), [Co(ODP)(QL4)2] (Co15), [Co(mpy)(QL4)2]I (Co16), [Co(ClPT)(QL4)2] (Co17), and
[Co(ClPT)(QL5)2] (Co18), with 5,7-dihalo-8-quinolinol
and 2,2′-bipyridine mixed ligands. The antitumor activity of Co1–Co18 has been evaluated against human
HeLa (cervical) cancer cells in vitro (IC50 values = 0.8 nM–11.88 μM), as well as in vivo against HeLa xenograft tumor growth (TIR = 43.7%, p < 0.05). Importantly, Co7 exhibited high safety in vivo and was more effective in inhibiting HeLa tumor
xenograft growth (43.7%) than cisplatin (35.2%) under the same conditions
(2.0 mg/kg). In contrast, the H-QL1 and DPPZ ligands greatly enhanced
the activity and selectivity of Co7 in comparison to Co1–Co6, Co8–Co18, and previously reported cobalt(II) compounds. In addition, Co7 (0.8 nM) inhibited telomerase activity, caused G2/M phase
arrest, and induced mitochondrial dysfunction at a concentration 5662.5
times lower than Co1 (4.53 μM) in related assays.
Taken together, Co7 showed low toxicity, and the combination
could be a novel Co(II) antitumor compound candidate.
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Affiliation(s)
- Ting Meng
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Qi-Pin Qin
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
- Guangxi Key Lab of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, 1303 Jiaoyudong Road, Yulin 537000, P. R. China
| | - Hua-Hong Zou
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
| | - Kai Wang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
| | - Fu-Pei Liang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmacy, Guangxi Normal University, 15 Yucai Road, Guilin 541004, P. R. China
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
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31
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Mohan N, Sreejith S, Kurup MP. Investigation on catecholase activity of salen Co(III) octahedral complexes. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.114129] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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32
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Yavari M, Beyramabadi SA, Morsali A, Bozorgmehr MR. Synthesis, Experimental and Theoretical Studies on N,N′-Dipyridoxyl(4-Chloro-1,2-Phenylenediamine) Tetradentate Ligand and Its Copper(II) Complex. J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619080055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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33
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Perontsis S, Dimitriou A, Fotiadou P, Hatzidimitriou AG, Papadopoulos AN, Psomas G. Cobalt(II) complexes with the non-steroidal anti-inflammatory drug diclofenac and nitrogen-donor ligands. J Inorg Biochem 2019; 196:110688. [DOI: 10.1016/j.jinorgbio.2019.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/01/2019] [Accepted: 04/03/2019] [Indexed: 12/21/2022]
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34
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King AP, Gellineau HA, MacMillan SN, Wilson JJ. Physical properties, ligand substitution reactions, and biological activity of Co(iii)-Schiff base complexes. Dalton Trans 2019; 48:5987-6002. [PMID: 30672949 PMCID: PMC6504617 DOI: 10.1039/c8dt04606a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Four cobalt(iii) complexes of the general formula [Co(Schiff base)(L)2]+, where L is ammonia (NH3) or 3-fluorobenzylamine (3F-BnNH2), were synthesized. The complexes were characterized by NMR spectroscopy, mass spectrometry, and X-ray crystallography. Their electrochemical properties, ligand substitution mechanisms, and ligand exchange rates in aqueous buffer were investigated. These physical properties were correlated to the cellular uptake and anticancer activities of the complexes. The complexes undergo sequential, dissociative ligand substitution, with the exchange rates depending heavily on the axial ligands. Eyring analyses revealed that the relative ligand exchange rates were largely impacted by differences in the entropy, rather than enthalpy, of activation for the complexes. Performing the substitution reactions in the presence of ascorbate led to a change in the reaction profile and kinetics, but no change in the final product. The cytotoxic activity of the complexes correlates with both the ligand exchange rate and reduction potential, with the more easily reduced and rapidly substituted complexes showing higher toxicity. These relationships may be valuable for the rational design of Co(iii) complexes as anticancer or antiviral prodrugs.
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Affiliation(s)
- A Paden King
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA.
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35
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Zeyrek CT, Hayvali Z, Ünver H, Elmali A. Crystal Structure, DFT and Molecular Docking Studies of tris[N-(2-Furylmethyl)-3-Methoxy Salicylidenaminato]Cobalt(III). J STRUCT CHEM+ 2019. [DOI: 10.1134/s0022476619040048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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36
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Sarvestani AH, Salimi A, Mohebbi S, Hallaj R. Synthesis, Spectroscopy and Electrochemistry of Cobalt(III) Schiff Base Complexes. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/0308234054213708] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Three Co(III) complexes of the type [Co(chel)(PBu3)]ClO4.H2O, (chel = 5-BrSalen, 5-MeOSalen and 4-MeOSalen), were synthesised and characterised by elemental analysis, IR, UV-Vis and 1H NMR spectroscopy. In their electronic spectra, the absorptions between 550 and 750 nm of these complexes are attributable to the lowest d–d transition. The axial ligands affect this transition through a σ-intraction with the dz2 orbital and the equatorial ligands affect it by π-interaction with populated d-orbitals. On the basis of an electronic structural model, in which the dz2 orbital is populated in forming cobalt(II), it is suggested that equatorial ligand substitution affects the reduction potentials less than axial ligand substitution.
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Affiliation(s)
| | - Abdollah Salimi
- Department of Chemistry, Kurdistan University, Sanandaj, Iran
| | - Sajjad Mohebbi
- Department of Chemistry, Kurdistan University, Sanandaj, Iran
| | - Rahman Hallaj
- Department of Chemistry, Kurdistan University, Sanandaj, Iran
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37
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Sarvestani AH, Mohebbi S. Spectroscopy and Electrochemistry of Cobalt(Iii) Salophen Complexes. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823406776894229] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Novel Co(III) complexes with general formula, [Co(chel)(PBu3)]ClO4.H2O, where chel = 5-Brsalophen, 5-NO2salophen, 5-MeOsalophen and 4-MeOsalophen, were synthesised and characterised. The spectroscopic and electrochemical properties of these complexes and [Co(salophen)(PR3)]ClO4.H2O (R = PBu3 and PPh3) complexes were investigated.
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Affiliation(s)
| | - Sajjad Mohebbi
- Department of Chemistry, Kurdistan University, Sanandaj, Iran
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38
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Yahyaoui M, Bouchama A, Anak B, Chiter C, Djedouani A, Rabilloud F. Synthesis, molecular structure analyses and DFT studies on new asymmetrical azines based Schiff bases. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.09.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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39
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Manojkumar Y, Ambika S, Arulkumar R, Gowdhami B, Balaji P, Vignesh G, Arunachalam S, Venuvanalingam P, Thirumurugan R, Akbarsha MA. Synthesis, DNA and BSA binding, in vitro anti-proliferative and in vivo anti-angiogenic properties of some cobalt(iii) Schiff base complexes. NEW J CHEM 2019. [DOI: 10.1039/c9nj01269a] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In the recent times metal complexes with dual mechanisms of action, anti-cancer and anti-angiogenic, have gained substantial interest in the field of medicinal chemistry.
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Affiliation(s)
| | - Subramanian Ambika
- Department of Chemistry
- Bharathidasan University
- Tiruchirappalli-620024
- India
| | - Rasu Arulkumar
- Department of Chemistry
- Bharathidasan University
- Tiruchirappalli-620024
- India
| | - Balakrishnan Gowdhami
- National Center for Alternatives to Animal Experiments
- Bharathidasan University
- Tiruchirappalli-620024
- India
| | - Perumalsamy Balaji
- National Center for Alternatives to Animal Experiments
- Bharathidasan University
- Tiruchirappalli-620024
- India
| | - Gobalsamy Vignesh
- Department of Chemistry
- Einstein Art and Science College
- Tirunelveli-627012
- India
| | | | | | - Ramaswamy Thirumurugan
- National Center for Alternatives to Animal Experiments
- Bharathidasan University
- Tiruchirappalli-620024
- India
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40
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Beyramabadi SA, Javan-Khoshkholgh M, Ostad NJ, Gharib A, Ramezanzadeh M, Sadeghi M, Bazian A, Morsali A. Spectroscopic (Ft-Ir, Nmr, Uv-Vis, Fluorescence) and Dft Studies (Molecular Structure, Ir and Nmr Spectral Assignments, Nbo and Fukui Function) of Schiff Bases Derived from 2-Chloro-3-Quinolinecarboxaldehyde. J STRUCT CHEM+ 2018. [DOI: 10.1134/s0022476618060136] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Synthesis, characterization and antimicrobial activities of Co(III) and Ni(II) complexes with 5-methyl-3-formylpyrazole-N(4)-dihexylthiosemicarbazone (HMPzNHex2): X-ray crystallography and DFT calculations of [Co(MPzNHex2)2]ClO4·1.5H2O (I) and [Ni(HMPzNHex2)2]Cl2·2H2O (II). Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.08.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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A rhodamine and chromone based “turn-on” fluorescent probe (RC1) for Zn(II) in aqueous solutions and its application. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.06.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Kumar V, Tewari S, Balendra, Karmakar S, Ramanan A. Synthesis, Crystal Structures and Binding Studies of Flufenamic‐ Acid‐Based Metal Complexes. ChemistrySelect 2018. [DOI: 10.1002/slct.201800992] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vineet Kumar
- Department of ChemistryIndian Institute of Technology Delhi, Hauz Khas New Delhi-110016 India
| | - Shailabh Tewari
- Department of ChemistryIndian Institute of Technology Delhi, Hauz Khas New Delhi-110016 India
| | - Balendra
- Department of ChemistryIndian Institute of Technology Delhi, Hauz Khas New Delhi-110016 India
| | - Sandip Karmakar
- Department of ChemistryIndian Institute of Technology Delhi, Hauz Khas New Delhi-110016 India
| | - Arunachalam Ramanan
- Department of ChemistryIndian Institute of Technology Delhi, Hauz Khas New Delhi-110016 India
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Synthesis, crystal structure, electrochemical properties and DFT calculations of three new Zn(II), Ni(II) and Co(III) complexes based on 5-bromo-2-((allylimino)methyl)phenol Schiff-based ligand. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.02.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Gutierrez K, Corchado J, Lin S, Chen Z, Piñero Cruz DM. A non-innocent salen naphthalene ligand and its Co 2+ , Ni 2+ and Cu 2+ metal complexes: Structural, electrochemical, and spectroscopic characterization and computational studies. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Galkina PА, Proskurnin МА. Supramolecular interaction of transition metal complexes with albumins and DNA: Spectroscopic methods of estimation of binding parameters. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4150] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Polina А. Galkina
- Moscow State M.V. Lomonosov University; Department of Chemistry; Leninskiye Gory 1, bld. 3 119991 Moscow Russia
| | - Мikhail А. Proskurnin
- Moscow State M.V. Lomonosov University; Department of Chemistry; Leninskiye Gory 1, bld. 3 119991 Moscow Russia
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Riga BA, Neves MD, Machado AE, Araújo DM, Souza JR, Nascimento OR, Santana VT, Cavalheiro CC, Carvalho-Jr VP, Goi BE. Synthesis of cobalt(II)-α-diimines complexes and their activity as mediators in organometallic mediated radical polymerization of vinyl acetate. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.11.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Kim SY, Lee SY, Jung JM, Kim MS, Kim C. Selective detection of Cu2+ and S2− by a colorimetric chemosensor: Experimental and theoretical calculations. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.12.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Li FF, Chen HY, Jin Y, Zhao QH, Xie MJ. Synthesis, X-Ray Structure and In Vitro Cytotoxic Activity of a New Dinuclear Cobalt(III) Complex with Diazine Ligands. Pharm Chem J 2018. [DOI: 10.1007/s11094-018-1711-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ghosh K, Banerjee A, Bauzá A, Frontera A, Chattopadhyay S. One pot synthesis of two cobalt(iii) Schiff base complexes with chelating pyridyltetrazolate and exploration of their bio-relevant catalytic activities. RSC Adv 2018; 8:28216-28237. [PMID: 35542722 PMCID: PMC9084250 DOI: 10.1039/c8ra03035a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 07/16/2018] [Indexed: 11/22/2022] Open
Abstract
Two new cobalt(iii) tetrazolato complexes [Co(L1)(PTZ)(N3)] (1) and [Co(L2)(PTZ)(N3)] (2) {where H2L1 = 2((3-(methylamino)propylimino)methyl)-6-methoxyphenol, H2L2 = 2((3-(dimethylamino)propylimino)methyl)-6-ethoxyphenol and HPTZ = 5-(2-pyridyl)tetrazole}, have been synthesized via in situ 1,3-dipolar cycloaddition reaction of 2-cyanopyridine and sodium azide in the presence of cobalt(ii) nitrate hexahydrate and respective Schiff bases in the open atmosphere. The structures of both complexes have been confirmed by single crystal X-ray diffraction studies. Features of noncovalent interactions in the solid state of both complexes have been studied by means of DFT and MEP calculations and characterized using Bader's theory of “atoms in molecules” (AIM). These complexes act as biomimetic catalysts promoting the aerobic oxidation of 3,5-di-tert-butylcatechol (3,5-DTBC) to the corresponding o-benzoquinone at room temperature. The reaction follows Michaelis–Menten enzymatic reaction kinetics with turnover numbers of ∼0.030 s−1 in an acetonitrile–methanol (2 : 1) mixture. Both complexes are also reactive towards aerobic oxidation of o-aminophenol in acetonitrile–methanol (2 : 1) with turnover numbers ∼0.095 s−1. Two cobalt(iii) tetrazolato complexes have been synthesized and characterized. Noncovalent interactions have been analysed by DFT and MEP calculations and characterized using Bader's theory of AIM. Both complexes catalyze the aerial oxidation of 3,5-DTBC and OAPH.![]()
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Affiliation(s)
- Kousik Ghosh
- Department of Chemistry
- Inorganic Section
- Jadavpur University
- Kolkata
- India
| | - Abhisek Banerjee
- Department of Chemistry
- Inorganic Section
- Jadavpur University
- Kolkata
- India
| | - Antonio Bauzá
- Departament de Química
- Universitat de les IllesBalears
- 07122 Palma (Baleares)
- Spain
| | - Antonio Frontera
- Departament de Química
- Universitat de les IllesBalears
- 07122 Palma (Baleares)
- Spain
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