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Molecular and Electronic Structures, Spectra, Electrochemistry and Anti‐bacterial Efficacy of Novel Heterocyclic Hydrazones of Phenanthrenequinone and Their Nickel(II) Complexes. ChemistrySelect 2022. [DOI: 10.1002/slct.202202151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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2
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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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3
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Wei R, Hu J, Chen X, Gong Y. Vanadium, niobium and tantalum complexes with terminal sulfur radical ligands. Dalton Trans 2021; 50:11300-11306. [PMID: 34342320 DOI: 10.1039/d1dt01956b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sulfur radicals terminally bound to the metal center can be considered as the one-electron reduction products of complexes with terminal sulfido ligands which serve as the reactive sites in enzymes and precursors. However, there is limited information regarding this kind of metal stabilized sulfur radical, which contrasts the more commonly known metal stabilized thiyl radical. In this work, we report the preparation of vanadium, niobium and tantalum radical complexes in the form of M(O)(S)F2 from the reactions of laser-ablated metal atoms and SOF2 in cryogenic matrixes. Combined with the results from infrared spectroscopy and density functional theory calculations, the sulfur ligand in M(O)(S)F2 is characterized to be a terminally bound radical with the unpaired electron located on the sulfur 3p orbital. Besides this radical complex, calculations also predict the existence of MF2(η2-SO) with a side-on SO ligand, but this less stable isomer is not observed as a result of high exothermicity along with its formation from metal atoms and SOF2 that is large enough to overcome the energy barrier towards the occurrence of M(O)(S)F2.
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Affiliation(s)
- Rui Wei
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
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4
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Synthesis of new rhodium(III) complex by benzylic C S bond cleavage of thioether containing NNS donor Schiff base ligand: Investigation of catalytic activity towards transfer hydrogenation of ketones. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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5
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Ruthenium(III) 2-(aminofluoreneazo)phenolate complexes: Synthesis, characterization, catalytic activity in amidation reaction and Fluorescence quenching studies. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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6
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Roy P, Sarkar D, Ghosh P, Manna CK, Murmu N, Mondal TK. Synthesis of luminescent rhodium(III) cyclometalated complex by sp2(C)–S bond activation: Application as catalyst in transfer hydrogenation of ketones and live cell imaging. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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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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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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9
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Vinoth G, Indira S, Bharathi M, Sounthararajan M, Sakthi D, Bharathi KS. Appraisal of Ruthenium(II) complexes of (4-phenoxyphenylazo) ligands for the synthesis of primary amides by dint of hydroxylamine hydrochloride and aldehydes. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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10
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Roy P, Manna CK, Naskar R, Mondal TK. Synthesis of a rhodium(III) triphenylphosphine complex via C S bond cleavage of an azo-thioether ligand: X-ray structure, electrochemistry and catalysis towards transfer hydrogenation of ketones. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.10.061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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Yan J, Yang Z, Chen Y, Chang Y, Lyu C, Luo C, Cheng M, Hsu H. Activation of O−H and C−O Bonds in Water and Methanol by a Vanadium‐Bound Thiyl Radical. Chemistry 2018; 24:15190-15194. [DOI: 10.1002/chem.201803431] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 07/17/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Jyun‐An Yan
- Department of ChemistryNational Cheng Kung University, No. 1 University Rd. 701 Tainan Taiwan
| | - Zi‐Kuan Yang
- Department of ChemistryNational Cheng Kung University, No. 1 University Rd. 701 Tainan Taiwan
| | - Yu‐Sen Chen
- Department of ChemistryNational Cheng Kung University, No. 1 University Rd. 701 Tainan Taiwan
| | - Ya‐Ho Chang
- Department of ChemistryNational Cheng Kung University, No. 1 University Rd. 701 Tainan Taiwan
| | - Chiao‐Ling Lyu
- Department of ChemistryNational Cheng Kung University, No. 1 University Rd. 701 Tainan Taiwan
| | - Chun‐Gang Luo
- Department of ChemistryNational Cheng Kung University, No. 1 University Rd. 701 Tainan Taiwan
| | - Mu‐Jeng Cheng
- Department of ChemistryNational Cheng Kung University, No. 1 University Rd. 701 Tainan Taiwan
| | - Hua‐Fen Hsu
- Department of ChemistryNational Cheng Kung University, No. 1 University Rd. 701 Tainan Taiwan
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12
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Zhu T, Wu X, Yang X, Sharma B, Li N, Huang J, Wang W, Xing W, Zhao Z, Huang H. One-Pot Catalytic Cleavage of C═S Double Bonds by Pd Catalysts at Room Temperature. Inorg Chem 2018; 57:9266-9273. [DOI: 10.1021/acs.inorgchem.8b01275] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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13
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Acharya S, Bandyopadhyay P, Das P, Biswas S, Biswas AN. Alkyl-sulfur versus aryl-sulfur bond cleavage in tridentate alkylthiophenylazonaphthols by group 9 metal ions. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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14
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Roy S, Pramanik S, Ghorui T, Dinda S, Patra SC, Pramanik K. Redox-active diaminoazobenzene complexes of rhodium(iii): synthesis, structure and spectroscopic characterization. NEW J CHEM 2018. [DOI: 10.1039/c7nj04790h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Coordination diversity of an aromatic diamine with Rh(iii) is presented together with the elucidation of the molecular and electronic structures, electron transfer, and electronic transitions.
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Affiliation(s)
- Sima Roy
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Shuvam Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Tapas Ghorui
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Soumitra Dinda
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Sarat Chandra Patra
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Kausikisankar Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
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15
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Synthesis of palladium(II) complex with NNS donor Schiff base ligand via C S bond cleavage: X-ray structure, electrochemistry and DFT computation. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.04.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Pramanik S, Dutta S, Roy S, Dinda S, Ghorui T, Kumar Mitra A, Pramanik K, Ganguly S. Luminescent closed shell nickel(ii) pyridyl-azo-oximates and the open shell anion radical congener: molecular and electronic structure, ligand redox behaviour and biological activity. NEW J CHEM 2017. [DOI: 10.1039/c7nj00402h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Luminescent nickel(ii) complexes have been synthesized using redox-active azo-oximes. The superior π-acidity of the organic backbone is a key to the isolation of Ni(ii) anion radicals.
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Affiliation(s)
- Shuvam Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata
- India
| | - Suhana Dutta
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata
- India
| | - Sima Roy
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata
- India
| | - Soumitra Dinda
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata
- India
| | - Tapas Ghorui
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata
- India
| | - Arup Kumar Mitra
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata
- India
| | | | - Sanjib Ganguly
- Department of Chemistry
- St. Xavier's College (Autonomous)
- Kolkata
- India
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17
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Banerjee S, Show B, Kundu A, Ganguly J, Gangopadhyay U, Saha H, Mukherjee N. N-acetyle cysteine assisted synthesis of coreshell Ag2S with enhanced light transmission and diminished reflectance: Surface modifier for c-SiNx solar cells. J IND ENG CHEM 2016. [DOI: 10.1016/j.jiec.2016.06.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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18
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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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Ghorui T, Roy S, Pramanik S, Pramanik K. RhCl(PPh3)3-mediated C–H oxyfunctionalization of pyrrolido-functionalized bisazoaromatic pincers: a combined experimental and theoretical scrutiny of redox-active and spectroscopic properties. Dalton Trans 2016; 45:5720-9. [DOI: 10.1039/c5dt05044h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Non-trivial coordination mode of symmetrical NNN ligands with Rh(iii) leads to redox-active NNO-scaffolds via C(sp2)–H oxyfunctionalization at rt, opening an opportunity to juxtapose different redox-active domains.
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Affiliation(s)
- Tapas Ghorui
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Sima Roy
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Shuvam Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Kausikisankar Pramanik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata – 700032
- India
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