1
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Dinda S, Pramanik S, Basu J, Patra SC, Pramanik K, Ganguly S. Azo-oximate metal-carbonyl to metallocarboxylic acid via the intermediate Ir(III) radical congener: quest for co-ligand driven stability of open- and closed-shell complexes. Dalton Trans 2022; 51:10121-10135. [PMID: 35731229 DOI: 10.1039/d2dt00345g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The redox non-innocent behavior of the diaryl-azo-oxime ligand LNOH1 has been accentuated via the synthesis of metastable anion radical complexes of type trans-[Ir(LNO˙-)Cl(CO)(PPh3)2] 2 (CO is trans to azo group of the ligand) by the oxidative coordination reaction of 1 with Vaska's complex. The stereochemical role of co-ligands vis-à-vis the interplay of π-bonding has been found to be decisive in controlling the aptitude of the coordinated redox non-innocent ligand to accept or reject an electron. This has been clarified via the isolation of quite a few complexes as well as the failure to synthesize some others. The oxidized analogues of type trans-[Ir(LNO-)Cl(CO)(PPh3)2]+2+ (CO and azo group of the ligand are trans) as well as its cis isomer cis-[Ir(LNO-)Cl(CO)(PPh3)2]+3+ (CO and azo group of the ligand are cis) have been structurally characterized but the radical anion congener of the latter could not be synthesized. Furthermore, the closed shell complexes [Ir(LNO-)Cl2(PPh3)2] 4 and [Ir(LNO-)2Cl(PPh3)] 5 have been well characterized by diffraction as well as spectral techniques but their corresponding azo anion radical complexes could not be isolated and this is attributed to the trans influence of ancillary ligands. The anion radical complexes trans-[Ir(LNO˙-)Cl(CO)(PPh3)2] 2 may be rapidly transformed to the metallocarboxylic acids trans-[Ir(LNO-)Cl(CO2H)(PPh3)2] 6via a proton-coupled electron transfer (PCET) process, thereby demonstrating the role of odd electron over the coordinated ligand framework to trigger metal-mediated carbonyl to carboxylic acid functionalization. Complexes 6 are further stabilized via intramolecular -CO2H⋯ON- (carboxylic acid⋯oximato) H-bonding. The optoelectronic properties as well as the origin of transitions in the complexes were analyzed by TD-DFT and theoretical analysis, which further disclose that the odd electron in trans-[Ir(LNO˙-)Cl(CO)(PPh3)2] 2 is primarily azo-oxime centric with very low contribution from the iridium center.
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Affiliation(s)
- Soumitra Dinda
- Department of Chemistry, St. Xavier's College (Autonomous), Kolkata - 700016, India.
| | - Shuvam Pramanik
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | - Jaydeep Basu
- Department of Chemistry, St. Xavier's College (Autonomous), Kolkata - 700016, India.
| | | | | | - Sanjib Ganguly
- Department of Chemistry, St. Xavier's College (Autonomous), Kolkata - 700016, India.
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2
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Majumder M, Das T, Sepay N, Rajak KK. A study of DNA/BSA interaction and catalytic potential of oxidovanadium(V, IV) complexes incorporating dibenzofuran based O^N^O ligand. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122244] [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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3
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Dinda S, Sarkar K, Panda BK, Pramanik K, Ganguly S. Diarylazooxime complex of cobalt(III): synthesis, structure, ligand redox, DFT calculations and spectral characteristics. TRANSIT METAL CHEM 2022. [DOI: 10.1007/s11243-021-00485-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Dinda S, Naskar S, Roy S, Pramanik K, Ganguly S. An insight into the coordination specificity of polyaromatic hydrocarbons (PAHs) grafted hydrazones towards rhodium(III). Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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5
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Gillam TA, Caporale C, Brooks RD, Bader CA, Sorvina A, Werrett MV, Wright PJ, Morrison JL, Massi M, Brooks DA, Zacchini S, Hickey SM, Stagni S, Plush SE. Neutral Re(I) Complex Platform for Live Intracellular Imaging. Inorg Chem 2021; 60:10173-10185. [PMID: 34210122 DOI: 10.1021/acs.inorgchem.1c00418] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Luminescent metal complexes are a valuable platform for the generation of cell imaging agents. However, many metal complexes are cationic, a factor that can dominate the intracellular accumulation to specific organelles. Neutral Re(I) complexes offer a more attractive platform for the development of bioconjugated imaging agents, where charge cannot influence their intracellular distribution. Herein, we report the synthesis of a neutral complex (ReAlkyne), which was used as a platform for the generation of four carbohydrate-conjugated imaging agents via Cu(I)-catalyzed azide-alkyne cycloaddition. A comprehensive evaluation of the physical and optical properties of each complex is provided, together with a determination of their utility as live cell imaging agents in H9c2 cardiomyoblasts. Unlike their cationic counterparts, many of which localize within mitochondria, these neutral complexes have localized within the endosomal/lysosomal network, a result consistent with examples of dinuclear carbohydrate-appended neutral Re(I) complexes that have been reported. This further demonstrates the utility of these neutral Re(I) complex imaging platforms as viable imaging platforms for the development of bioconjugated cell imaging agents.
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Affiliation(s)
- Todd A Gillam
- UniSA Clinical and Health Sciences, University of South Australia, North Tce, Adelaide, South Australia 5000, Australia.,UniSA STEM, Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
| | - Chiara Caporale
- Department of Chemistry, Curtin University, Kent St., Bentley, Western Australia 6102, Australia
| | - Robert D Brooks
- UniSA Clinical and Health Sciences, University of South Australia, North Tce, Adelaide, South Australia 5000, Australia
| | - Christie A Bader
- UniSA Clinical and Health Sciences, University of South Australia, North Tce, Adelaide, South Australia 5000, Australia
| | - Alexandra Sorvina
- UniSA Clinical and Health Sciences, University of South Australia, North Tce, Adelaide, South Australia 5000, Australia
| | - Melissa V Werrett
- School of Chemistry, Monash University, Clayton, Melbourne, Victoria 3800, Australia
| | - Phillip J Wright
- Department of Chemistry, Curtin University, Kent St., Bentley, Western Australia 6102, Australia
| | - Janna L Morrison
- UniSA Clinical and Health Sciences, University of South Australia, North Tce, Adelaide, South Australia 5000, Australia
| | - Massimiliano Massi
- Department of Chemistry, Curtin University, Kent St., Bentley, Western Australia 6102, Australia
| | - Doug A Brooks
- UniSA Clinical and Health Sciences, University of South Australia, North Tce, Adelaide, South Australia 5000, Australia
| | - Stefano Zacchini
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Shane M Hickey
- UniSA Clinical and Health Sciences, University of South Australia, North Tce, Adelaide, South Australia 5000, Australia
| | - Stefano Stagni
- Department of Industrial Chemistry "Toso Montanari", University of Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Sally E Plush
- UniSA Clinical and Health Sciences, University of South Australia, North Tce, Adelaide, South Australia 5000, Australia.,UniSA STEM, Future Industries Institute, University of South Australia, Mawson Lakes, South Australia 5095, Australia
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6
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Dinda S, Patra SC, Samanta T, Basu A, Pramanik K, Ganguly S. Rhodium assisted peri-C–H activation in benzothiazolyl-hydrazone derivatized pyrene. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114352] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Dinda S, Patra SC, Roy S, Halder S, Weyhermüller T, Pramanik K, Ganguly S. Coligand driven diverse organometallation in benzothiazolyl-hydrazone derivatized pyrene: ortho vs. peri C–H activation. NEW J CHEM 2020. [DOI: 10.1039/c9nj05088d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Divergent aromatic C–H activation at both ortho and peri positions in polyaromatic hydrocarbons has been successfully accomplished by suitable variation of the coligand.
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Affiliation(s)
- Soumitra Dinda
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata 700016
- India
| | - Sarat Chandra Patra
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata 700032
- India
| | - Subhadip Roy
- Department of Chemistry
- The ICFAI University Tripura
- India
| | - Supriyo Halder
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata 700032
- India
| | | | - Kausikisankar Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata 700032
- India
| | - Sanjib Ganguly
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata 700016
- India
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8
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Oxidovanadium (V and IV) complexes incorporating coumarin based O^N^O ligand: Synthesis, structure and catalytic activities. Polyhedron 2020. [DOI: 10.1016/j.poly.2019.114241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Dinda S, Roy S, Patra SC, Bhandary S, Pramanik K, Ganguly S. Polyaromatic hydrocarbon derivatized azo-oximes of cobalt( iii) for the ligand-redox controlled electrocatalytic oxygen reduction reaction. NEW J CHEM 2020. [DOI: 10.1039/c9nj05527d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Two new polyaromatic hydrocarbon (PAH) derivatized cobalt(iii) azo-oxime complexes were synthesized and their activity in electrocatalytic oxygen reduction reaction (ORR) were explored.
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Affiliation(s)
- Soumitra Dinda
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata–700016
- India
| | - Syamantak Roy
- Molecular Materials Laboratory
- Chemistry and Physics of Materials Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Jakkur
- Bangalore
| | | | - Subhrajyoti Bhandary
- Department of Chemistry
- Indian Institute of Science Education and Research Bhopal
- Bhopal By-pass Road
- Bhauri
- Bhopal
| | | | - Sanjib Ganguly
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata–700016
- India
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10
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Dinda S, Sultana T, Sultana S, Patra SC, Mitra AK, Roy S, Pramanik K, Ganguly S. Ruthenocycles of benzothiazolyl and pyridyl hydrazones with ancillary PAHs: synthesis, structure, electrochemistry and antimicrobial activity. NEW J CHEM 2020. [DOI: 10.1039/d0nj01447h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The antimicrobial activity of ruthenocycles of pyridyl and benzothiazolyl hydrazones has been investigated. The study established that such activity is comparatively higher for the complex containing benzothiazolyl hydrazone.
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Affiliation(s)
- Soumitra Dinda
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata – 700016
- India
| | - Tamanna Sultana
- Department of Microbiology
- St. Xavier's College (Autonomous)
- Kolkata – 700016
- India
| | - Suhana Sultana
- Department of Microbiology
- St. Xavier's College (Autonomous)
- Kolkata – 700016
- India
| | | | - Arup Kumar Mitra
- Department of Microbiology
- St. Xavier's College (Autonomous)
- Kolkata – 700016
- India
| | - Subhadip Roy
- Department of Chemistry
- The ICFAI University Tripura
- India
| | | | - Sanjib Ganguly
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata – 700016
- India
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11
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Dinda S, Patra SC, Panda BK, Ganguly S. Synthesis, X-ray crystal structure, DFT calculations, spectroscopic characterization and redox behaviour of a rhodium(III) complex of an anthracene–pyridylhydrazone ligand. TRANSIT METAL CHEM 2019. [DOI: 10.1007/s11243-018-00300-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Azzarelli N, Ponnala S, Aguirre A, Dampf SJ, Davis MP, Ruggiero MT, Lopez Diaz V, Babich JW, Coogan M, Korter T, Doyle RP, Zubieta J. Defining the origins of multiple emission/excitation in rhenium-bisthiazole complexes. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.01.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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13
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Rhodium(III) complex with pyrene-pyridyl-hydrazone: synthesis, structure, ligand redox, spectral characterization and DFT calculation. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1598-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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14
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Dutta A, Islam ASM, Maiti D, Sasmal M, Pradhan C, Ali M. A smart molecular probe for selective recognition of nitric oxide in 100% aqueous solution with cell imaging application and DFT studies. Org Biomol Chem 2019; 17:2492-2501. [DOI: 10.1039/c9ob00177h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple, least-cytotoxic as well as an efficient fluorescent sensor HqEN480 recognizes NO in 100% aqueous solution with cell imaging application.
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Affiliation(s)
- Ananya Dutta
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | | | - Debjani Maiti
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Mihir Sasmal
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Chandradoy Pradhan
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Mahammad Ali
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
- Vice-Chancellor
- Aliah University
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15
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Das T, Rajak KK. Experimental and theoretical investigation of a metalloreceptor bearing a [Re(CO)3]+ core incorporating a multifunctional ligand: selective reactivity towards Zn2+ and CN− ions. Dalton Trans 2019; 48:6879-6891. [DOI: 10.1039/c9dt00901a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Novel Re(i) complex containing multifunctional ligand HL shows selective reactivity towards Zn2+ and CN−.
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Affiliation(s)
- Tapashi Das
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Kajal Krishna Rajak
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
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16
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Maiti D, Islam ASM, Dutta A, Sasmal M, Prodhan C, Ali M. Dansyl-appended CuII-complex-based nitroxyl (HNO) sensing with living cell imaging application and DFT studies. Dalton Trans 2019; 48:2760-2771. [DOI: 10.1039/c8dt04564j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We introduce herein, a novel copper complex-based fluorescent probe[CuII(DQ468)Cl]+that exhibits a significant fluorescence turn-on response towards nitroxyl with high selectivity over other biological reactive oxygen, nitrogen and sulfur species, including nitric oxide.
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Affiliation(s)
- Debjani Maiti
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | | | - Ananya Dutta
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Mihir Sasmal
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Chandraday Prodhan
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Mahammad Ali
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
- Vice-Chancellor
- Aliah University
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17
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Bhowmick R, Musha Islam AS, Sasmal M, Katarkar A, Ali M. A rhodamine hydrazide– 4-nitroindole-3-carboxaldehyde based turn on Hg 2+ chemosensor: cytoplasmic live cell imaging, logic gate and memory device applications and computational studies. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1486400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Rahul Bhowmick
- Department of Chemistry, Jadavpur University, Kolkata, India
| | | | - Mihir Sasmal
- Department of Chemistry, Jadavpur University, Kolkata, India
| | - Atul Katarkar
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Mahammad Ali
- Department of Chemistry, Jadavpur University, Kolkata, India
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18
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Hanson SS, Warren JJ. Syntheses, characterization, and electrochemical behavior of alkylated 2-(2′-quinolylbenzimidazole) complexes of rhenium (I). CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A series of ClRe(CO)3-containing complexes with 1-methyl-1H-benzo[d]imidazol-2-yl)quinoline (Me-QuBIm), 1-benzyl-1H-benzo[d]imidazol-2-yl)quinoline (Bn-QuBIm), and 2-(1-(4-methoxybenzyl)-1H-benzo[d]imidazol-2-yl)quinoline (OMeBn-QuBIm) ligands were prepared and characterized. Each complex was characterized using 1H and 13C NMR, infrared, UV–vis, and fluorescence spectroscopies, and cyclic voltammetry. The physical properties of each complex are similar to the parent ClRe(CO)3(2-(1H-benzo[d]imidazol-2-yl)quinoline) complex. However, the electrochemical behavior is distinct from the parent, showing reversible voltammograms and poor CO2 reduction activity. Addition of K+ or Mg2+ as Lewis acids modestly increases catalytic currents, but at large overpotentials. The work presented here is consistent with a mechanism that involves rhenium reduction and deprotonation of imidazole and benzimidazole prior to CO2 reduction electrocatalysis.
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Affiliation(s)
- Samuel S. Hanson
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
| | - Jeffrey J. Warren
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada
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19
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Mohammad H, Islam ASM, Prodhan C, Chaudhuri K, Ali M. A hydrazone based probe for selective sensing of Al(iii) and Al(iii)-probe complex mediated secondary sensing of PPi: framing of molecular logic circuit and memory device and computational studies. Photochem Photobiol Sci 2018; 17:200-212. [DOI: 10.1039/c7pp00286f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A hydrazone-based conjugate acts as a dual channel sensor towards Al3+and PPi in H2O–MeOH with excellent sensing capability in live cells.
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Affiliation(s)
- Hasan Mohammad
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
| | | | - Chandraday Prodhan
- Department of Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Keya Chaudhuri
- Department of Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Mahammad Ali
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
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20
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Mabhai S, Dolai M, Dey S, Dhara A, Das B, Jana A. A novel chemosensor based on rhodamine and azobenzene moieties for selective detection of Al3+ ions. NEW J CHEM 2018. [DOI: 10.1039/c8nj00436f] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Both rhodamine and azobenzene moieties have been conjugated to prepare a novel chemosensor for the detection of Al3+ through CHEF-PET and the spirolactam ring opening mechanism.
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Affiliation(s)
- Subhabrata Mabhai
- Department of Chemistry
- Mahishadal Raj College
- East Midnapore
- Mahishadal
- India
| | - Malay Dolai
- Department of Chemistry
- Prabhat Kumar College
- Contai
- Purba Medinipur 721401
- India
| | - Satyajit Dey
- Department of Chemistry
- Tamralipta Mahavidyalaya
- East Midnapore
- India
| | - Anamika Dhara
- Department of Chemistry
- Jadavpur University
- Raja S. C. Mallick Road
- Kolkata 700032
- India
| | - Bhriguram Das
- Department of Chemistry
- Tamralipta Mahavidyalaya
- East Midnapore
- India
| | - Atanu Jana
- Department of Chemistry
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
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21
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Sun C, Rotundo L, Garino C, Nencini L, Yoon SS, Gobetto R, Nervi C. Electrochemical CO 2 Reduction at Glassy Carbon Electrodes Functionalized by Mn I and Re I Organometallic Complexes. Chemphyschem 2017; 18:3219-3229. [PMID: 28834058 DOI: 10.1002/cphc.201700739] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Indexed: 12/15/2022]
Abstract
The catalytic activities towards electrochemical CO2 reduction of two new rhenium and manganese complexes, namely fac-Mn(apbpy)(CO)3 Br (1) and fac-Re(apbpy)(CO)3 Cl (2) (apbpy=4-(4-aminophenyl)-2,2'-bipyridine), in both homogeneous and heterogeneous phases are compared. A glassy carbon electrode (GCE) surface has been functionalized with complexes 1 and 2 by two approaches: a) direct electrochemical oxidation of the amino group with formation of C-N bonds, and b) electrochemical reduction of the corresponding diazonium salts with formation of C-C bonds. The chemically modified GCEs show efficient conversion of CO2 into CO, with turnover numbers (TONs) about 60 times higher than those of the corresponding catalysts in homogeneous solutions, and in a much shorter time.
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Affiliation(s)
- Cunfa Sun
- Department of Chemistry and NIS (Centre of excellence), University of Torino, via P. Giuria 7, 10125, Torino, Italy.,CIRCC (Centro Interuniveristario di Reattività Chimica e Catalisi), Via Celso Ulpiani 27, 70126, Bari, Italy.,Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen, 361005, China
| | - Laura Rotundo
- Department of Chemistry and NIS (Centre of excellence), University of Torino, via P. Giuria 7, 10125, Torino, Italy.,CIRCC (Centro Interuniveristario di Reattività Chimica e Catalisi), Via Celso Ulpiani 27, 70126, Bari, Italy
| | - Claudio Garino
- Department of Chemistry and NIS (Centre of excellence), University of Torino, via P. Giuria 7, 10125, Torino, Italy.,CIRCC (Centro Interuniveristario di Reattività Chimica e Catalisi), Via Celso Ulpiani 27, 70126, Bari, Italy
| | - Luca Nencini
- Department of Chemistry and NIS (Centre of excellence), University of Torino, via P. Giuria 7, 10125, Torino, Italy.,CIRCC (Centro Interuniveristario di Reattività Chimica e Catalisi), Via Celso Ulpiani 27, 70126, Bari, Italy
| | - Sam S Yoon
- School of Mechanical Engineering, Korea University, Seoul, 136-713, Republic of Korea
| | - Roberto Gobetto
- Department of Chemistry and NIS (Centre of excellence), University of Torino, via P. Giuria 7, 10125, Torino, Italy.,CIRCC (Centro Interuniveristario di Reattività Chimica e Catalisi), Via Celso Ulpiani 27, 70126, Bari, Italy
| | - Carlo Nervi
- Department of Chemistry and NIS (Centre of excellence), University of Torino, via P. Giuria 7, 10125, Torino, Italy.,CIRCC (Centro Interuniveristario di Reattività Chimica e Catalisi), Via Celso Ulpiani 27, 70126, Bari, Italy
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22
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Electrocatalytic CO 2 reduction using rhenium(I) complexes with modified 2-(2′-pyridyl)imidazole ligands. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.09.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Biswas S, Dolai M, Dutta A, Ali M. Synthesis, structural characterization and DFT calculation on a square-planar Ni(II) complex of a compartmental Schiff base ligand. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.07.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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24
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Conterosito E, Benesperi I, Toson V, Saccone D, Barbero N, Palin L, Barolo C, Gianotti V, Milanesio M. High-Throughput Preparation of New Photoactive Nanocomposites. CHEMSUSCHEM 2016; 9:1279-1289. [PMID: 27137753 DOI: 10.1002/cssc.201600325] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Indexed: 06/05/2023]
Abstract
New low-cost photoactive hybrid materials based on organic luminescent molecules inserted into hydrotalcite (layered double hydroxides; LDH) were produced, which exploit the high-throughput liquid-assisted grinding (LAG) method. These materials are conceived for applications in dye-sensitized solar cells (DSSCs) as a co-absorbers and in silicon photovoltaic (PV) panels to improve their efficiency as they are able to emit where PV modules show the maximum efficiency. A molecule that shows a large Stokes' shift was designed, synthesized, and intercalated into LDH. Two dyes already used in DSSCs were also intercalated to produce two new nanocomposites. LDH intercalation allows the stability of organic dyes to be improved and their direct use in polymer melt blending. The prepared nanocomposites absorb sunlight from UV to visible and emit from blue to near-IR and thus can be exploited for light-energy management. Finally one nanocomposite was dispersed by melt blending into a poly(methyl methacrylate)-block-poly(n-butyl acrylate) copolymer to obtain a photoactive film.
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Affiliation(s)
- Eleonora Conterosito
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy
| | - Iacopo Benesperi
- Dipartimento di Chimica and NIS and INSTM Reference Centre, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy
- School of Chemistry, Monash University, Victoria, 3800, Australia
| | - Valentina Toson
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy
| | - Davide Saccone
- Dipartimento di Chimica and NIS and INSTM Reference Centre, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy
| | - Nadia Barbero
- Dipartimento di Chimica and NIS and INSTM Reference Centre, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy
| | - Luca Palin
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy
- Nova Res s.r.l., Via Dolores Bello 3, 28100, Novara, Italy
| | - Claudia Barolo
- Dipartimento di Chimica and NIS and INSTM Reference Centre, Università degli Studi di Torino, Via P. Giuria 7, 10125, Torino, Italy
| | - Valentina Gianotti
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy.
| | - Marco Milanesio
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, Viale Teresa Michel 11, 15121, Alessandria, Italy.
- CrisDi Interdepartmental Center for Crystallography.
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25
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Pramanik S, Roy S, Ghorui T, Ganguly S, Pramanik K. Iridium(III) Mediated Reductive Transformation of Closed-Shell Azo-Oxime to Open-Shell Azo-Imine Radical Anion: Molecular and Electronic Structure, Electron Transfer, and Optoelectronic Properties. Inorg Chem 2016; 55:1461-8. [DOI: 10.1021/acs.inorgchem.5b02185] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shuvam Pramanik
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Sima Roy
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Tapas Ghorui
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
| | - Sanjib Ganguly
- Department
of Chemistry, St. Xavier’s College, Kolkata 700016, India
| | - Kausikisankar Pramanik
- Department
of Chemistry, Inorganic Chemistry Section, Jadavpur University, Kolkata 700032, India
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26
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Islam ASM, Bhowmick R, Mohammad H, Katarkar A, Chaudhuri K, Ali M. A novel 8-hydroxyquinoline-pyrazole based highly sensitive and selective Al(iii) sensor in a purely aqueous medium with intracellular application: experimental and computational studies. NEW J CHEM 2016. [DOI: 10.1039/c5nj03153b] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new 8-hydroxyquinoline-pyrazole based probe senses Al3+ and hence Al3+–8Q-NH-Pyz complex mediated F− in a purely aqueous medium.
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Affiliation(s)
| | | | | | - Atul Katarkar
- Department of Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata 700032
- India
| | - Keya Chaudhuri
- Department of Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata 700032
- India
| | - Mahammad Ali
- Department of Chemistry
- Jadavpur University
- Kolkata
- India
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27
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Alam R, Mistri T, Bhowmick R, Katarkar A, Chaudhuri K, Ali M. ESIPT blocked CHEF based differential dual sensor for Zn2+ and Al3+in a pseudo-aqueous medium with intracellular bio-imaging applications and computational studies. RSC Adv 2016. [DOI: 10.1039/c5ra18424j] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel H3SAL-NH probe exhibits ESIPT from the phenolic OH group to the azomethine N atom in the excited state. This is blocked in the presence of Zn2+ and Al3+ giving turn on fluorescence which is useful for imaging in live HepG2 cells.
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Affiliation(s)
- Rabiul Alam
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Tarun Mistri
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Rahul Bhowmick
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
| | - Atul Katarkar
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Keya Chaudhuri
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Mahammad Ali
- Department of Chemistry Jadavpur University
- Kolkata 700 032
- India
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28
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fac-Tricarbonyl rhenium(I) complexes of triazole-based ligands: Synthesis, X-ray structure and luminescent properties. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.10.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Sarkar R, Rajak KK. Synthesis and characterization of rhenium(I) complexes based on O, N, N coordinating ligands: DFT/TDDFT studies on the electronic structures and spectral properties. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.12.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Synthesis and evaluation of new salicylaldehyde-2-picolinylhydrazone Schiff base compounds of Ru(II), Rh(III) and Ir(III) as in vitro antitumor, antibacterial and fluorescence imaging agents. J Biol Inorg Chem 2015; 20:619-38. [PMID: 25712889 DOI: 10.1007/s00775-015-1249-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 02/14/2015] [Indexed: 01/15/2023]
Abstract
Reaction of salicylaldehyde-2-picolinylhydrazone (HL) Schiff base ligand with precursor compounds [{(p-cymene)RuCl2}2] 1, [{(C6H6)RuCl2}2] 2, [{Cp*RhCl2}2] 3 and [{Cp*IrCl2}2] 4 yielded the corresponding neutral mononuclear compounds 5-8, respectively. The in vitro antitumor evaluation of the compounds 1-8 against Dalton's ascites lymphoma (DL) cells by fluorescence-based apoptosis study and by their half-maximal inhibitory concentration (IC50) values revealed the high antitumor activity of compounds 3, 4, 5 and 6. Compounds 1-8 render comparatively lower apoptotic effect than that of cisplatin on model non-tumor cells, i.e., peripheral blood mononuclear cells (PBMC). The antibacterial evaluation of compounds 5-8 by agar well-diffusion method revealed that compound 6 is significantly effective against all the eight bacterial species considered with zone of inhibition up to 35 mm. Fluorescence imaging study of compounds 5-8 with plasmid circular DNA (pcDNA) and HeLa RNA demonstrated their fluorescence imaging property upon binding with nucleic acids. The docking study with some key enzymes associated with the propagation of cancer such as ribonucleotide reductase, thymidylate synthase, thymidylate phosphorylase and topoisomerase II revealed strong interactions between proteins and compounds 5-8. Conformational analysis by density functional theory (DFT) study has corroborated our experimental observation of the N, N binding mode of ligand. Compounds 5-8 exhibited a HOMO (highest occupied molecular orbital)-LUMO (lowest unoccupied molecular orbital) energy gap 2.99-3.04 eV. Half-sandwich ruthenium, rhodium and iridium compounds were obtained by treatment of metal precursors with salicylaldehyde-2-picolinylhydrazone (HL) by in situ metal-mediated deprotonation of the ligand. Compounds under investigation have shown potential antitumor, antibacterial and fluorescence imaging properties. Arene ruthenium compounds exhibited higher activity compared to that of Cp*Rh/Cp*Ir in inhibiting the cancer cells growth and pathogenic bacteria. At a concentration 100 µg/mL, the apoptosis activity of arene ruthenium compounds, 5 and 6 (~30 %) is double to that of Cp*Rh/Cp*Ir compounds, 7 and 8 (~12 %). Among the four new compounds 5-8, the benzene ruthenium compound, i.e., compound 6 is significantly effective against the pathogenic bacteria under investigation.
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31
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Saha U, Mukherjea KK. Development of a multifunctional biomimicking l-cysteine based oxovanadium(iv) complex: synthesis, DFT calculations, bromo-peroxidation and nuclease activity. RSC Adv 2015. [DOI: 10.1039/c5ra19585c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An oxovanadium complex [VO(sal-l-cys)(phen)] (sal-l-cys = Schiff base derived from salicylaldehyde and l-cysteine; phen = 1,10-phenanthroline) has been synthesized and characterized by spectroscopic studies (IR, UV-vis, ESI-MS and EPR studies).
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Affiliation(s)
- Urmila Saha
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
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32
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Hens A, Rajak KK. Photophysical property vs. medium: mononuclear, dinuclear and trinuclear Zn(ii) complexes. RSC Adv 2015. [DOI: 10.1039/c4ra13606c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mononuclear, acetato bridged dinuclear and phenoxo bridged trinuclear Zn(ii) complexes have been synthesized. Their photophysical properties were characterized spectroscopically and with TDDFT and attributed to intra ligand (π → π*) charge transfer.
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Affiliation(s)
- Amar Hens
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata
- India
| | - Kajal Krishna Rajak
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata
- India
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33
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Sarkar R, Hens A, Rajak KK. Synthesis, characterization and DFT study of oxorhenium(v) complexes incorporating quinoline based tridentate ligands. RSC Adv 2015. [DOI: 10.1039/c4ra15135f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two mononuclear Re(v) complexes were synthesized using two different O, N, N coordinating Schiff base ligands. The X-ray structure and catalytic properties of the complexes are investigated and the electronic structure and absorption spectra were also calculated.
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Affiliation(s)
- Rupa Sarkar
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Amar Hens
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
| | - Kajal Krishna Rajak
- Inorganic Chemistry Section
- Department of Chemistry
- Jadavpur University
- Kolkata 700032
- India
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34
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Franco F, Cometto C, Garino C, Minero C, Sordello F, Nervi C, Gobetto R. Photo- and Electrocatalytic Reduction of CO2by [Re(CO)3{α,α′-Diimine-(4-piperidinyl-1,8-naphthalimide)}Cl] Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402912] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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35
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Mondal P, Sarkar R, Hens A, Rajak KK. Mononuclear rhenium(i) complexes incorporating 2-(arylazo)phenyl benzyl thioethers: synthesis, structure, spectral, DFT and TDDFT studies. RSC Adv 2014. [DOI: 10.1039/c4ra05699j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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36
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Cattaneo M, Vergara MM, García Posse ME, Fagalde F, Parella T, Katz NE. Spectroscopic, electrochemical and computational studies of rhenium(I) and ruthenium(II) complexes incorporating the novel tetradentate ligand 1,4-bis(4-(4′-methyl)-2,2′-bipyridyl)-2,3-diaza-1,3-butadiene (BBDB) and its derivatives. Polyhedron 2014. [DOI: 10.1016/j.poly.2013.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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Wang L, Wen J, He H, Zhang J. The reasons for ligand-dependent quantum yields and spectroscopic properties of platinum(II) complexes based on tetradentate O^N^C^N ligands: a DFT and TD-DFT study. Dalton Trans 2014; 43:2849-58. [PMID: 24343333 DOI: 10.1039/c3dt52616j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT and TD-DFT methods have been employed to theoretically investigate the properties of three recently synthesized green-emitting platinum(II) complexes (1-3) bearing tetradentate O^N^C^N ligands (O^C^N^C = 2-(4-(3,5-di-tert-butylphenyl)-6-(3-(pyridin-2-yl)phenyl)-pyridin-2-yl)phenolate and its derivatives) that have been testified to be good emitters in organic light-emitting diodes (OLEDs), especially for complex 3. The effect of the variation of the substituents on the electronic and optical properties is emphatically explored. Our calculation results reveal that the introduction of an electron-releasing group on one phenyl ring of the O^C^N^C ligand (complex 2) does not result in a distinct alteration of the spectra. However, the incorporation of the norbornane group to the O^C^N^C ligand (complex 3) leads to a blue-shift in the absorption and emission spectra as compared with 1. In addition, how the absorption and emission spectra are affected by the solvent polarity is studied. Both the absorption and the emission spectra display red-shifts of various degrees with the decrease of the solvent polarity. The different phosphorescent quantum yields of the three complexes are compared. It is reasonable to believe that the high (3)MLCT (metal-to-ligand charge transfer) contribution and high percentage of the metallic character (M(c), %) in the emission process, as well as the largest vertical transition energy for 3, result in the highest quantum efficiency.
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Affiliation(s)
- Li Wang
- Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
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38
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Bhowmick R, Dolai M, Alam R, Mistri T, Katarkar A, Chaudhuri K, Ali M. A novel pyrene-2-(pyridin-2-ylmethylsulfanyl)ethylamine based turn-on dual sensor for Al3+: experimental and computational studies. RSC Adv 2014. [DOI: 10.1039/c4ra06018k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A pyrene based pyrene-2-(pyridin-2-ylmethylsulfanyl)-ethylamine (PP) is found to exhibit a turn-on chemo- and fluorogenic dual sensing of Al3+ through PET blocking and CHEF effect.
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Affiliation(s)
- Rahul Bhowmick
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
| | - Malay Dolai
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
| | - Rabiul Alam
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
| | - Tarun Mistri
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
| | - Atul Katarkar
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032, India
| | - Keya Chaudhuri
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032, India
| | - Mahammad Ali
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
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39
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Sarkar R, Mondal P, Rajak KK. Synthesis, structure and spectroscopic properties of Re(i) complexes incorporating 5-arylazo-8-hydroxyquinoline: a density functional theory/time-dependent density functional theory investigation. Dalton Trans 2014; 43:2859-77. [DOI: 10.1039/c3dt52630e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Pramanik S, Roy S, Ghorui T, Ganguly S, Pramanik K. Molecular and electronic structure of nonradical homoleptic pyridyl-azo-oxime complexes of cobalt(iii) and the azo-oxime anion radical congener: an experimental and theoretical investigation. Dalton Trans 2014; 43:5317-34. [DOI: 10.1039/c3dt53460j] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthesis and optoelectronic study of Co(iii)–pyridyl-azo-oxime complexes and isolation of Co(iii)-bound azo-oxime anion radical.
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Affiliation(s)
- Shuvam Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032, India
| | - Sima Roy
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032, India
| | - Tapas Ghorui
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032, India
| | - Sanjib Ganguly
- Department of Chemistry
- St. Xavier's College
- Kolkata – 700016, India
| | - Kausikisankar Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032, India
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41
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Biswas S, Dutta A, Dolai M, Debnath M, Jana AD, Ali M. Copper(ii) induced oxidative modification and complexation of a schiff base ligand: synthesis, crystal structure, catalytic oxidation of aromatic hydrocarbons and DFT calculation. RSC Adv 2014. [DOI: 10.1039/c4ra06078d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A mononuclear square planar complex [CuII(L2f)], formed from a Schiff baseH2Laand Cu2+with the concomitant oxidation of two –CH2OH groups to aldehyde, displayed catalytic oxidation of aromatic hydrocarbons.
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Affiliation(s)
- Surajit Biswas
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
| | - Arpan Dutta
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
| | - Malay Dolai
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
| | - Mainak Debnath
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
| | | | - Mahammad Ali
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032, India
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42
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Ghosh D, Saha U, Mukherjea KK. A light harvesting mononuclear manganese(ii) complex: synthesis, characterization, DFT and TDDFT calculations and photophysical profile. RSC Adv 2014. [DOI: 10.1039/c4ra00729h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new manganese(ii) [MnII(DEMP)(NCS)(H2O)] (DEMP = Schiff base derived from salicylaldehyde and 2-diethylaminoethylamine) complex has been synthesized and characterized. The complex absorbs light ranging from 200–850 nm. Thus, the molecule is capable of harvesting the entire range of sunlight falling on earth.
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Affiliation(s)
- Debalina Ghosh
- Department of Chemistry
- Jadavpur University
- Calcutta (Kolkata), India
| | - Urmila Saha
- Department of Chemistry
- Jadavpur University
- Calcutta (Kolkata), India
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43
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Alam R, Mistri T, Mondal P, Das D, Mandal SK, Khuda-Bukhsh AR, Ali M. A novel copper(II) complex as a nitric oxide turn-on fluorosensor: intracellular applications and DFT calculation. Dalton Trans 2013; 43:2566-76. [PMID: 24316755 DOI: 10.1039/c3dt52521j] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report, herein, the development of an easily synthesizable novel dansyl-based turn-on NO sensor L2. The UV-Vis titration data of L2 with Cu(2+) display a gradual increase in absorbance at 418 nm with [Cu(2+)], which were analyzed by using a non-linear least-squares computer-fit program yielding K = (1.16 ± 0.36) × 10(6) M(-1) and n = (1.28 ± 0.03) indicating a 1 : 1 complexation. The ground state geometries of L2 as well as its complex [Cu(L2)Cl](+) (1) were optimized by DFT calculations which showed that in complex 1 the central metal ion is in distorted tetrahedral geometry with bond distances very close to those found in analogous Cu(2+) complexes. The fluorescence of L2 was dramatically quenched (∼60-fold) through complexation with paramagnetic Cu(2+) to form [Cu(L2)Cl](+) in MeCN-H2O (9 : 1, v/v) at pH 7.2 in HEPES buffer, which on further treatment with Angeli's salt (Na2N2O3) restores its fluorescence property by ∼15-fold due to the reduction of Cu(2+) to Cu(+) by NO generated in solution from Na2N2O3. The lifetime measurements displayed a substantial decrease in the lifetime of free ligand L2 (τ0 = 12 ns) on complexation with Cu(2+) (τ0 = 2.1 ns). The detection limit of NO calculated by the 3σ method gives a value of 1.6 nM. The NO induced fluorescence enhancement of [Cu(II)(L2)Cl](+) was due to the reduction of [Cu(II)(L2)Cl](+) (1) to [Cu(I)(L2)](+) (2) and is supported by the disappearance of the d-d transition band at 850 nm as well as the X-band EPR signal of 1. The selective "turn on" fluorogenic behavior of L2 was examined on HeLa cells of human cervical cancer origin by fluorescence microscopy which showed very intense intracellular fluorescence that was strongly suppressed by the addition of Cu(2+) but it regains its fluorescence property on further incubation with Angeli's salt (Na2N2O3). The existence of [Cu(II)(L2)Cl](+) and [Cu(I)(L2)](+) in solution was confirmed by ESI-MS(+) (m/z) analysis. The effect of different biologically relevant cations and anions on the fluorescence property of L2 indicates that it was only the [Cu(II)(L2)Cl](+) which displayed high selectivity for NO, indicating its suitability for intracellular application without much worry about its cytotoxicity in a specified dose.
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Affiliation(s)
- Rabiul Alam
- Department of Chemistry, Jadavpur University, Kolkata 700 032, India
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44
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Dinuclear oxidovanadium(V) complexes incorporating N, N, O, O coordinating ligands: Synthesis, structure, spectral, DFT and TDDFT study. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.02.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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45
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Organometallic Complexes of Pyridines Together with Diverse Heterocycles as Ligands. ADVANCES IN HETEROCYCLIC CHEMISTRY 2013. [DOI: 10.1016/b978-0-12-407777-5.00002-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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46
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Mondal P, Hens A, Basak S, Rajak KK. Mononuclear and dinuclear Re(i) complexes incorporating 1-(2-pyridylazo)-2-naphthol: synthesis, structure, spectral, DFT and TDDFT studies. Dalton Trans 2013; 42:1536-49. [DOI: 10.1039/c2dt31774e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Volpi G, Garino C, Nervi C. Exploring synthetic pathways to cationic heteroleptic cyclometalated iridium complexes derived from dipyridylketone. Dalton Trans 2012; 41:7098-108. [DOI: 10.1039/c2dt30399j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Volpi G, Garino C, Breuza E, Gobetto R, Nervi C. Dipyridylketone as a versatile ligand precursor for new cationic heteroleptic cyclometalated iridium complexes. Dalton Trans 2012; 41:1065-73. [DOI: 10.1039/c1dt11279a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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LU ZHUAN, ZHANG QIANLING, XU YANGSEN, WANG MINGLIANG, LIU JIANHONG. DENSITY FUNCTIONAL THEORY/TIME-DEPENDENT DENSITY FUNCTIONAL THEORY STUDY ON THE STRUCTURES AND SOLVENT EFFECTS ON THE ELECTRONIC SPECTRA OF Ru(II) POLYPYRIDYL COMPLEXES: [Ru(bpy)2(L)]2+ (L = CNOIP, HPIP, DPPZ, TAPIP). JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2011. [DOI: 10.1142/s0219633609004976] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The structures and solvent dependence of electronic spectra of four Ru ( II ) polypyridyl complexes: [ Ru ( bpy )2 CNOIP ]2+, bpy = 2,2-bipyridine and CNOIP = 2-(2-chloro-5-nitrophenyl)imidazo[4,5-f][1,10]phenanthroline (Ru-1); [ Ru ( bpy )2 HPIP ]2+, HPIP = 2-(2-hydroxyphenyl) imidazo[4,5-f][1,10]phenanthroline ( Ru -2); [ Ru ( bpy )2 DPPZ ]2+, DPPZ = dipyrido[3,2:a-2′,3′:c]-phenazine ( Ru -3); [ Ru ( bpy )2 TAPIP ]2+, TAPTP = 4,5,9,18-tetraazaphenanthreno-[9,10-b]triphenylene ( Ru -4) have been carried out by density functional theory/time-dependent density functional theory in vacuum and nine solvents are described by the conductor-like polarized continuum model. The calculated results show that the solvent has a strong effect on the electron distribution of molecular orbitals and character of charge transfer. In water, the simulated absorption spectra (λmax) are in accordance with experimental data. The computational results also indicate the electronic spectra of Ru ( II ) polypyridyl complexes: [ Ru ( bpy )2( L )]2+ is very sensitive to the intercalative ligands L = CNOIP, HPIP, DPPZ, TAPIP in the presence of solvent. It was noted that the trend of transition intensity of complexes strongly depends on the polarity of solvents. In the present polar solvents, the transition intensity trend of Ru -4 > Ru -1 > Ru -2 > Ru -3 was obtained, but in the case of nonpolar solvents, the transition intensity trend is Ru -4 > Ru -3 > Ru -1 > Ru -2. Among the four polypyridyl complexes, [ Ru ( bpy )2 TAPIP ]2+( Ru -4) exhibits the strongest oscillator strength in all nine solvents.
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Affiliation(s)
- ZHUAN LU
- School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, P R China
| | - QIANLING ZHANG
- School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, P R China
| | - YANGSEN XU
- School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, P R China
| | - MINGLIANG WANG
- School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, P R China
| | - JIANHONG LIU
- School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, P R China
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Burlov AS, Antsyshkina AS, Sadkov GG, Chesnokov VV, Koshchienko YV, Garnovskii DA, Vasil’chenko IS, Uraev AI, Borodkin GS, Sergienko VS, Garnovskii AD. Coordination compounds of ambidentate 1-(H)alkyl-2-(2-pyridyl)benzimidazoles. Synthesis and crystal structure. RUSS J COORD CHEM+ 2010. [DOI: 10.1134/s1070328410120079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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