1
|
Kargar H, Fallah-Mehrjardi M, Behjatmanesh-Ardakani R, Amiri Rudbari H, Adabi Ardakani A, Sedighi-Khavidak S, Munawar KS, Ashfaq M, Tahir MN. Synthesis, spectral characterization, crystal structures, biological activities, theoretical calculations and substitution effect of salicylidene ligand on the nature of mono and dinuclear Zn(II) Schiff base complexes. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
2
|
Munshi SJ, Saini JK, Ingle S, Kumar SB. Metal(II) chloride complexes containing a tridentate N-donor Schiff base ligand: syntheses, structures and antimicrobial activity. J COORD CHEM 2021. [DOI: 10.1080/00958972.2021.1940157] [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]
Affiliation(s)
- Sadeka J. Munshi
- Department of Chemistry, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India
| | - Jaswinder Kaur Saini
- Department of Microbiology and Biotechnology Centre, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India
| | - Sanjay Ingle
- Department of Microbiology and Biotechnology Centre, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India
| | - Sujit Baran Kumar
- Department of Chemistry, The Maharaja Sayajirao University of Baroda, Vadodara, Gujarat, India
| |
Collapse
|
3
|
Rakshit T, Mandal B, Alenezi KM, Ganguly R, Mandal D. Synthesis, structure, luminescent properties and catecholase activity of Zn(II) complex with N, O chelating agent. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
4
|
Catalytic oxidative coupling of o-phenylenediamine, in-vitro antibacterial and antitumor activities of a gold(III)-bipyridine complex. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129264] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
|
5
|
Bandopadhyay N, Joshi M, Armaković S, Armaković SJ, Das HS, Roy Choudhury A, Biswas B. Unprecedented copper( ii) coordination induced nucleophilic cleavage of a quinoxaline heterocycle: structural and computational studies. CrystEngComm 2021. [DOI: 10.1039/d1ce00569c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This research work deals with the unprecedented copper(ii) induced nucleophilic cleavage of a quinoxaline heterocycle with spectroscopic, structural and computational studies.
Collapse
Affiliation(s)
| | - Mayank Joshi
- Department of Chemical Sciences
- Indian Institute of Science Education and Research, Mohali
- Mohali
- India
| | - Stevan Armaković
- Faculty of Sciences
- Department of Physics
- University of Novi Sad
- Novi Sad
- Serbia
| | - Sanja J. Armaković
- Faculty of Sciences
- Department of Chemistry, Biochemistry and Environmental Protection
- University of Novi Sad
- Novi Sad
- Serbia
| | - Hari Sankar Das
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences
- Indian Institute of Science Education and Research, Mohali
- Mohali
- India
| | - Bhaskar Biswas
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| |
Collapse
|
6
|
Mudi PK, Mahato RK, Joshi M, Paul S, Choudhury AR, Biswas B. Synthesis and structural characterization of a linkage isomer to a mononuclear Nickel(II) complex: Experimental and computational depiction of phosphoesterase efficiency. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127083] [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]
|
7
|
Pal CK, Mahato S, Yadav HR, Shit M, Choudhury AR, Biswas B. Bio-mimetic of catecholase and phosphatase activity by a tetra-iron(III) cluster. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.114156] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
8
|
Banerjee A, Tolla AS, Stjepanovic S, Sevilla MD, Goodsell JL, Angerhofer A, Brennessel WW, Loloee R, Chavez FA. Structural, Spectroscopic, Electrochemical, and Magnetic Properties for Manganese(II) Triazamacrocyclic Complexes. Inorganica Chim Acta 2019; 486:546-555. [PMID: 33981118 PMCID: PMC8112617 DOI: 10.1016/j.ica.2018.11.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report the synthesis of [Mn(tacud)2](OTf)2 (1) (tacud = 1,4,8-triazacycloundecane), [Mn(tacd)2](OTf)2 (2) (tacd = 1,4,7-triazacyclodecane), and [Mn(tacn)2](OTf)2 (3) (tacn = 1,4,7-triazacyclononane). Electrochemical measurements on the MnIII/II redox couple show that complex 1 has the largest anodic potential of the set (E 1/2 = 1.16 V vs NHE, ΔE p = 106 mV) compared to 2 (E 1/2 = 0.95 V, ΔE p = 108 mV) and 3 (E 1/2 = 0.93 V, ΔE p = 96 mV). This is due to the fact that 1 has the fewest 5-membered chelate rings and thus is least stabilized. Magnetic studies of 1-3 revealed that all complexes remain high spin throughout the temperature range investigated (2 - 300 K). X-band EPR investigations in methanol glass indicated that the manganese(II) centers for 2 and 3 resided in a more distorted octahedral geometric configuration compared to 1. To ease spectral interpretation and extract ZFS parameters, we performed high-frequency high-field EPR (HFEPR) at frequencies above 200 GHz and a field of 7.5 T. Simulation of the spectral data yielded g = 2.0013 and D = -0.031 cm-1 for 1, g = 2.0008, D = -0.0824 cm-1, |E/D| = 0.12 for 2, and g = 2.00028, D = -0.0884 cm-1 for 3. These results are consistent with 3 possessing the most distorted geometry. Calculations (PBE0/6-31G(d)) were performed on 1-3. Results show that 1 has the largest HOMO-LUMO gap energy (6.37 eV) compared to 2 (6.12 eV) and 3 (6.26 eV). Complex 1 also has the lowest HOMO energies indicating higher stability.
Collapse
Affiliation(s)
- Atanu Banerjee
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | - Azam S Tolla
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | | | - Michael D Sevilla
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| | - Justin L Goodsell
- Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA
| | | | | | - Reza Loloee
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824-1322, USA
| | - Ferman A Chavez
- Department of Chemistry, Oakland University, Rochester, MI 48309-4477, USA
| |
Collapse
|
9
|
Garai M, Das A, Joshi M, Paul S, Shit M, Choudhury AR, Biswas B. Synthesis and spectroscopic characterization of a photo-stable tetrazinc(II)–Schiff base cluster: A rare case of ligand centric phenoxazinone synthase activity. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.09.044] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
10
|
Das S, Sahu A, Joshi M, Paul S, Shit M, Roy Choudhury A, Biswas B. Ligand-Centered Radical Activity by a Zinc-Schiff-Base Complex towards Catechol Oxidation. ChemistrySelect 2018. [DOI: 10.1002/slct.201801084] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Subrata Das
- Department of Chemistry; University of North Bengal; Darjeeling 734013, West Bengal India
| | - Amrita Sahu
- Department of Electrical Engineering; Temple University; Philadelphia 741235 USA
| | - Mayank Joshi
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Manauli PO; Mohali 140 306 India
| | - Suvendu Paul
- Department of Chemistry; University of Kalyani, Kalyani; 741235, West Bengal India
| | - Madhusudan Shit
- Department of Chemistry; Dinobandhu Andrews College; Kolkata 700084,West Bengal India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences; Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Manauli PO; Mohali 140 306 India
| | - Bhaskar Biswas
- Department of Chemistry; University of North Bengal; Darjeeling 734013, West Bengal India
| |
Collapse
|
11
|
Pal S, Chowdhury B, Patra M, Maji M, Biswas B. Ligand centered radical pathway in catechol oxidase activity with a trinuclear zinc-based model: synthesis, structural characterization and luminescence properties. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 144:148-154. [PMID: 25754390 DOI: 10.1016/j.saa.2015.02.046] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Revised: 02/10/2015] [Accepted: 02/11/2015] [Indexed: 06/04/2023]
Abstract
A new trinuclear zinc(II) complex, [Zn3(L)(NCS)2](NO3)2·CH3OH·H2O (1), of a (N,O)-donor compartmental Schiff base ligand (H2L=N,N'-bis(3-methoxysalicylidene)-1,3-diamino-2-propanol), has been synthesized in crystalline phase. The zinc(II) complex has been characterized by elemental analysis, IR spectroscopy, UV-Vis spectroscopy, powder X-ray diffraction study (PXRD), (1)H NMR, EI mass spectrometry and thermogravimetric analysis. PXRD revealed that 1 crystallizes in P-1 space group with a=9.218 Å, b=10.849 Å, c=18.339 Å, with unit cell volume is 2179.713(Å)(3). Fluorescence spectra in methanolic solution reflect that intensity of emission for 1 is much higher compared to H2L and both the compounds exhibit good fluorescence properties. The complex 1 exhibits significant catalytic activities of biological relevance, viz. catechol oxidase. In methanol, it efficiently catalyzes the oxidation of 3,5-di-tert-butylcatechol (3,5-DTBC) to corresponding quinone via formation of a dinuclear species as [Zn2(L)(3,5-DTBC)]. Electron Paramagnetic Resonance (EPR) experiment suggests generation of radicals in the presence of 3,5-DTBC and it may be proposed that the radical pathway is probably responsible for conversion of 3,5-DTBC to 3,5-DTBQ promoted by complex of redox-innocent Zn(II) ion.
Collapse
Affiliation(s)
- Sukanta Pal
- Department of Chemistry, Raghunathpur College, Purulia 723133, India
| | | | - Moumita Patra
- Department of Physics, Raghunathpur College, Purulia 723133, India
| | - Milan Maji
- Department of Chemistry, National Institute of Technology, Durgapur 713209, India
| | - Bhaskar Biswas
- Department of Chemistry, Raghunathpur College, Purulia 723133, India.
| |
Collapse
|
12
|
Microwave and solvothermal methods for the synthesis of nickel and ruthenium complexes with 9-anthracene carboxylate ligand. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.07.063] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
13
|
Cortijo M, Herrero S, Jerez B, Jiménez-Aparicio R, Perles J, Priego JL, Torroba J, Tortajada J. One-Dimensional [Ni(O2CR)2(NN)x] Polymers: Structural, Magnetic, and Density Functional Theory Studies. Chempluschem 2014. [DOI: 10.1002/cplu.201402005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
14
|
Synthesis, X-ray structural and magnetic characterizations, and epoxidation activity of a new bis(μ-acetato)(μ-alkoxo)dinuclear iron(III) complex. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.12.040] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
15
|
Cortijo M, Herrero S, Jiménez-Aparicio R, Perles J, Priego JL, Torralvo MJ, Torroba J. Hybrid Polyfunctional Systems Based on Nickel(II) Isonicotinate. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201201461] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
16
|
You ZL, Liu T, Zhang N, Zhang M, Xian DM, Li HH. Synthesis, crystal structure, and magnetic property of a rarely seen μ1,1-OMe-bridged dimeric manganese(III) complex derived from 2-[1-(2-methylaminoethylimino)ethyl]phenol. INORG CHEM COMMUN 2012. [DOI: 10.1016/j.inoche.2012.01.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
17
|
Bhardwaj VK, Hundal MS, Corbella M, Gómez V, Hundal G. Salicylaldimine Schiff bases – Generation of self-assembled and chiral complexes with Ni(II) and Zn(II) ions. An unusual antiferromagnetic interaction in a triply bridged Ni(II) dimer. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.03.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
18
|
Pal A, Biswas B, Mondal SK, Lin CH, Ghosh R. Copper(II) complexes with neutral Schiff bases: Syntheses, crystal structures and DNA interactions. Polyhedron 2012. [DOI: 10.1016/j.poly.2011.10.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|