1
|
Karmakar G, Dutta Pathak D, Tyagi A, Mandal BP, Wadawale AP, Kedarnath G. Molecular precursor mediated selective synthesis of phase pure cubic InSe and hexagonal In 2Se 3 nanostructures: new anode materials for Li-ion batteries. Dalton Trans 2023; 52:6700-6711. [PMID: 37128966 DOI: 10.1039/d3dt00234a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Indium selenides (InSe and In2Se3) have earned a special place among the 2D layered metal chalcogenides owing to their nontoxic nature and favourable carrier mobility. Additionally, they are also being projected as next generation battery anodes with high theoretical lithium-ion storage capacities. While the development of indium selenide-based batteries is still in its embryonic stage, a simple and easily scalable synthetic pathway to access these materials is highly desirable for energy storage applications. This study reports a controlled synthetic route to nanometric cubic InSe and hexagonal In2Se3 materials through proper choice of coordinating solvents from a structurally characterized air and moisture stable single source molecular precursor: tris(4,6-dimethyl-2-pyrimidylselenolato)indium(III). The crystal structure, phase purity, composition, morphology and band gap of the nanomaterials were thoroughly evaluated by pXRD, energy dispersive X-ray spectroscopy (EDS), electron microscopy (SEM and TEM), and diffuse reflectance spectroscopy (DRS), respectively. The pristine InSe and In2Se3 nanostructures have been employed as anode materials in lithium-ion batteries (LIBs). Both the cells deliver reasonably high initial discharge capacities with a cyclability of 200 and 620 cycles for cubic InSe and hexagonal In2Se3 respectively with ∼100% coulombic efficiency.
Collapse
Affiliation(s)
- Gourab Karmakar
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400 094, India
| | - Dipa Dutta Pathak
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
| | - Adish Tyagi
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400 094, India
| | - B P Mandal
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400 094, India
| | - A P Wadawale
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
| | - G Kedarnath
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai-400 085, India.
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400 094, India
| |
Collapse
|
2
|
Karmakar G, Shah AY, Tyagi A, Wadawale AP, Kedarnath G, Kumar NN, Bahadur J. Synthesis of photo-responsive indium selenides (InSe and In 2Se 3) from tris(4,6-dimethyl-2-pyrimidylselenolato)indium( iii) as a molecular precursor. NEW J CHEM 2022. [DOI: 10.1039/d1nj06167d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Facile and selective synthesis of phase pure photo-responsive InSe and In2Se3 nanostructures employing air-stable In[Sepym(Me-4,6)2]3 as a novel molecular precursor.
Collapse
Affiliation(s)
- Gourab Karmakar
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai – 400 085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai – 400 094, India
| | - Alpa Y. Shah
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai – 400 085, India
| | - Adish Tyagi
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai – 400 085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai – 400 094, India
| | - A. P. Wadawale
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai – 400 085, India
| | - G. Kedarnath
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai – 400 085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai – 400 094, India
| | - N. Naveen Kumar
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai – 400 085, India
| | - Jitendra Bahadur
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai – 400 085, India
| |
Collapse
|
3
|
Dhau JS, Singh A, Brandão P, Felix V. Synthesis, characterization, X-ray crystal structure and antibacterial activity of bis[3-(4-chloro-N,N-diethylpyridine-2-carboxamide)] diselenide. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108942] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
4
|
Qadir AM, Kansiz S, Dege N, Saif E. Crystal structure and Hirshfeld surface analysis of bis-[(eth-oxy-methane-thio-yl)sulfanido]( N, N, N', N'-tetra-methyl-ethane-1,2-di-amine)-mercury(II). Acta Crystallogr E Crystallogr Commun 2021; 77:1126-1129. [PMID: 34868649 PMCID: PMC8587978 DOI: 10.1107/s2056989021010549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 10/11/2021] [Indexed: 11/10/2022]
Abstract
The title four-coordinate mononuclear complex, [Hg(C3H5OS2)2(C6H16N2)] or [Hg(C3H5OS2)2(tmeda)] (tmeda: N,N,N',N'-tetra-methyl-ethane-1,2-di-amine), has a distorted tetra-hedral geometry. The HgII ion is coordinated to two N atoms of the N,N,N',N'-tetra-methyl-ethylenedi-amine ligand and two S atoms from two ethylxanthate xanthate ligands. In the crystal, mol-ecules are linked by weak C-H⋯S hydrogen bonds, forming a two-dimensional supra-molecular architecture in the ab plane. The most important contributions for the crystal packing are from H⋯H (59.3%), S⋯H (27.4%) and O⋯H (7.5%) inter-actions.
Collapse
Affiliation(s)
- Adnan M. Qadir
- Department of Chemistry, College of Science, Salahaddin University, Erbil, 44001, Iraq
| | - Sevgi Kansiz
- Samsun University, Faculty of Engineering, Department of Fundamental Sciences, 55420, Samsun, Turkey
| | - Necmi Dege
- Ondokuz Mayıs University, Faculty of Arts and Sciences, Department of Physics, 55139, Samsun, Turkey
| | - Eiad Saif
- Department of Computer and Electronic Engineering Technology, Sanaa Community College, Sanaa, Yemen
- Department of Electrical and Electronic Engineering, Faculty of Engineering, Ondokuz Mayıs University, 55139, Samsun, Turkey
| |
Collapse
|
5
|
An interesting heterometallic complex [{Ni2(κ2-SeC5H4N)2(µ-OCH3)CdCl}2] as single source molecular precursor for NiSe/CdSe heterostructure: Consequence of similar Ni-Se and Cd-Se bond distances. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
|
6
|
Crystal structures of bis(2-methoxy-3-pyridyl) diselenide and bis(2-methoxy-3-pyridyl) ditelluride: an investigation by X-ray crystallography and DFT calculations. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130568] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
7
|
Molecular and Polymeric Metal(II) chalcogenolate clusters: synthesis and structural characterization. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
8
|
Tolan DA, Kashar TI, Yoshizawa K, El‐Nahas AM. Synthesis, spectral characterization, density functional theory studies, and biological screening of some transition metal complexes of a novel hydrazide–hydrazone ligand of isonicotinic acid. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6205] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dina A. Tolan
- Department of Chemistry College of Science and Humanities Prince Sattam bin Abdulaziz University Al‐Kharj 11942 Saudi Arabia
- Chemistry Department, Faculty of Science Menoufia University Shebin El‐Kom 13829 Egypt
| | - Tahani I. Kashar
- Chemistry Department, Faculty of Science Menoufia University Shebin El‐Kom 13829 Egypt
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering Kyushu University Fukuoka 819‐0395 Japan
| | - Ahmed M. El‐Nahas
- Chemistry Department, Faculty of Science Menoufia University Shebin El‐Kom 13829 Egypt
| |
Collapse
|
9
|
Cargnelutti R, Schumacher RF, Belladona AL, Kazmierczak JC. Coordination chemistry and synthetic approaches of pyridyl-selenium ligands: A decade update. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213537] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
10
|
Abstract
Internally functionalized multifaceted organochalcogen compounds have been designed and their ligand chemistry has been developed. The palladium complexes show remarkable homogeneous catalytic activity.
Collapse
Affiliation(s)
- Vimal K. Jain
- UM-DAE Centre for Excellence in Basic Sciences
- Nalanda Building
- University of Mumbai
- Mumbai-400 098
- India
| |
Collapse
|
11
|
Progress in selenium based metal-organic precursors for main group and transition metal selenide thin films and nanomaterials. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.02.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
12
|
Jain VK, Kedarnath G. Applications of metal selenium/tellurium compounds in materials science. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2017-0127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Metal chalcogenides are technologically important materials. Physical, chemical, electrical and mechanical properties of these materials can be fine-tuned by manipulating their shape, size and composition. Although several methods are employed for their synthesis, single-source molecular precursor route has emerged as a versatile strategy for their synthesis and in controlling shape, size and composition of the material under moderate conditions. This chapter gives a brief coverage on the design and development of single-source molecular precursors which have been employed for the preparation of metal selenide/telluride nanocrystals and for deposition of thin films. The discussion includes synthesis of transition-, main group and f-block metal chalcogenolate and/or chalcogenide clusters as precursors and their conversion into metal chalcogenides in the form of thin films and nanostructures. Precursors for ternary metal chalcogenides are also included.
Collapse
|
13
|
Karmakar G, Tyagi A, Wadawale A, Kedarnath G, Srivastava A, Betty C, Singh V. Synthesis, Characterization and Photo Response Behaviour of InSe and CuInSe2
Nanostructures Using Tris(5-methyl-2-pyridylselenolato)indium(III) as Molecular Precursor. ChemistrySelect 2018. [DOI: 10.1002/slct.201801653] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Gourab Karmakar
- Chemistry Division; Bhabha Atomic Research Centre; Mumbai- 400 085 India
| | - Adish Tyagi
- Chemistry Division; Bhabha Atomic Research Centre; Mumbai- 400 085 India
- Homi Bhabha National Institute, Anushaktinagar; Mumbai- 400 094 India
| | - Amey Wadawale
- Chemistry Division; Bhabha Atomic Research Centre; Mumbai- 400 085 India
| | - Gotluru Kedarnath
- Chemistry Division; Bhabha Atomic Research Centre; Mumbai- 400 085 India
- Homi Bhabha National Institute, Anushaktinagar; Mumbai- 400 094 India
| | - Amit P. Srivastava
- Mechanical Metallurgy Division; Bhabha Atomic Research Centre; Mumbai- 400 085 India)
| | | | - Vishal Singh
- Materials Science Division; Bhabha Atomic Research Centre; Mumbai- 400 085 India)
| |
Collapse
|
14
|
Kreider-Mueller A, Quinlivan PJ, Owen JS, Parkin G. Tris(2-mercaptoimidazolyl)hydroborato Cadmium Thiolate Complexes, [Tm But]CdSAr: Thiolate Exchange at Cadmium in a Sulfur-Rich Coordination Environment. Inorg Chem 2017; 56:4644-4654. [PMID: 28368611 PMCID: PMC5461919 DOI: 10.1021/acs.inorgchem.7b00296] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Indexed: 11/30/2022]
Abstract
A series of cadmium thiolate compounds that feature a sulfur-rich coordination environment, namely [TmBut]CdSAr, have been synthesized by the reactions of [TmBut]CdMe with ArSH (Ar = C6H4-4-F, C6H4-4-But, C6H4-4-OMe, and C6H4-3-OMe). In addition, the pyridine-2-thiolate and pyridine-2-selenolate derivatives, [TmBut]CdSPy and [TmBut]CdSePy have been obtained via the respective reactions of [TmBut]CdMe with pyridine-2-thione and pyridine-2-selone. The molecular structures of [TmBut]CdSAr and [TmBut]CdEPy (E = S or Se) have been determined by X-ray diffraction and demonstrate that, in each case, the [CdS4] motif is distorted tetrahedral and approaches a trigonal monopyramidal geometry in which the thiolate ligand adopts an equatorial position; [TmBut]CdSPy and [TmBut]CdSePy, however, exhibit an additional long-range interaction with the pyridyl nitrogen atoms. The ability of the thiolate ligands to participate in exchange was probed by 1H and 19F nuclear magnetic resonance (NMR) spectroscopic studies of the reactions of [TmBut]CdSC6H4-4-F with ArSH (Ar = C6H4-4-But or C6H4-4-OMe), which demonstrate that (i) exchange is facile and (ii) coordination of thiolate to cadmium is most favored for the p-fluorophenyl derivative. Furthermore, a two-dimensional EXSY experiment involving [TmBut]CdSC6H4-4-F and 4-fluorothiophenol demonstrates that degenerate thiolate ligand exchange is also facile on the NMR time scale.
Collapse
Affiliation(s)
- Ava Kreider-Mueller
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Patrick J. Quinlivan
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Jonathan S. Owen
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| | - Gerard Parkin
- Department of Chemistry, Columbia University, New York, New York 10027, United States
| |
Collapse
|
15
|
Chauhan RS, Shivran N, Slawin AM, Derek Woollins J. Synthesis and characterization of heterobimetallic complexes with pyridyl selenolato ligands. Crystal structure of [{Pt(C5H4N)(SeC5H4N)(dppp)}ZnCl2]. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2016.12.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
Rehe D, Kornienko AY, Emge TJ, Brennan JG. Thorium Compounds with Bonds to Sulfur or Selenium: Synthesis, Structure, and Thermolysis. Inorg Chem 2016; 55:6961-7. [DOI: 10.1021/acs.inorgchem.6b00645] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David Rehe
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Anna Y. Kornienko
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - Thomas J. Emge
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| | - John G. Brennan
- Department of Chemistry and Chemical Biology, Rutgers, the State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854-8087, United States
| |
Collapse
|
17
|
Patel S, Meenakshi M, Hodage AS, Verma A, Agrawal S, Yadav A, Kumar S. Synthesis and structural characterization of monomeric mercury(ii) selenolate complexes derived from 2-phenylbenzamide ligands. Dalton Trans 2016; 45:4030-40. [DOI: 10.1039/c5dt04356e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The present work describes the synthesis and structural characterization of mercury selenolate complexes derived from 2-phenylbenzamide ligands and their isolation in monomeric form for the first time.
Collapse
Affiliation(s)
- Saket Patel
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Meenakshi Meenakshi
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Ananda S. Hodage
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Ajay Verma
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Shailendra Agrawal
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Abhimanyu Yadav
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| | - Sangit Kumar
- Department of Chemistry
- Indian Institute of Science Education and Research (IISER)
- Bhopal
- India 462 066
| |
Collapse
|
18
|
Synthesis and structure of Au(I), Cu(I) and Cu(II) complexes with bis(2-pyridyl)diselenide: The copper complexes and its oxidation products. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.04.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
19
|
Cargnelutti R, da Silva FD, Abram U, Lang ES. Metal complexes with bis(2-pyridyl)diselenoethers: structural chemistry and catalysis. NEW J CHEM 2015. [DOI: 10.1039/c5nj01400j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis(2-pyridyl)diselenoethers are versatile ligands for the synthesis of transition metal complexes. Some products show remarkable catalytic activities.
Collapse
Affiliation(s)
- Roberta Cargnelutti
- LMI – Departamento de Química
- Universidade Federal de Santa Maria – UFSM
- 97105900 – Santa Maria
- RS – Brazil
| | - Felipe Dornelles da Silva
- LMI – Departamento de Química
- Universidade Federal de Santa Maria – UFSM
- 97105900 – Santa Maria
- RS – Brazil
| | - Ulrich Abram
- Institute of Chemistry and Biochemistry
- Freie Universität Berlin
- D-14195 Berlin
- Germany
| | - Ernesto Schulz Lang
- LMI – Departamento de Química
- Universidade Federal de Santa Maria – UFSM
- 97105900 – Santa Maria
- RS – Brazil
| |
Collapse
|
20
|
Synthesis and antibacterial activity of pyridylselenium compounds: Self-assembly of bis(3-bromo-2-pyridyl)diselenide via intermolecular secondary and π⋯π stacking interactions. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.05.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
21
|
Sharma RK, Wadawale A, Kedarnath G, Vishwanadh B, Jain VK. Pyrimidyl-2-selenolates of cadmium and mercury: Synthesis, characterization, structures and their conversion to metal selenide nano-particles. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.11.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
22
|
Indium(III) (3-methyl-2-pyridyl)selenolate: Synthesis, structure and its utility as a single source precursor for the preparation of In2Se3 nanocrystals and a dual source precursor with [Cu{SeC5H3(Me-3)N}]4 for the preparation of CuInSe2. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.04.034] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
23
|
Kedarnath G, Jain VK. Pyridyl and pyrimidyl chalcogen (Se and Te) compounds: A family of multi utility molecules. Coord Chem Rev 2013. [DOI: 10.1016/j.ccr.2013.01.003] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
24
|
Palmer JH, Parkin G. 2-Seleno-1-alkylbenzimidazoles and their Diselenides: Synthesis and Structural Characterization of a 2-Seleno-1-methylbenzimidazole Complex of Mercury. Polyhedron 2013; 52:658-668. [PMID: 23543946 PMCID: PMC3610765 DOI: 10.1016/j.poly.2012.07.090] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
2-Seleno-1-methylbenzimidazole, H(sebenzimMe), can be synthesized from 1-methylbenzimidazole by sequential treatment with (i) BunLi, (ii) elemental selenium and (iii) HCl(aq). This method is also applicable to the synthesis of 2-seleno-1-t-butylbenzimidazole, H(sebenzimBut ). Single crystal X-ray diffraction and NMR spectroscopic data demonstrate that H(sebenzimMe) and H(sebenzimBut ) exist as the selone rather than the selenol tautomers, which is in accord with the results of density functional theory (B3LYP) calculations. The data also indicate that the selone is best represented as a C+-Se- zwitterion rather than as a C=Se doubly bonded species. Aerobic oxidation of H(sebenzimMe) and H(sebenzimBut ) in the presence of Et3N yields the diselenides, (sebenzimMe)2 and (sebenzimBut )2. In addition, H(sebenzimMe) reacts with HgCl2 to give [H(sebenzimMe)]2HgCl2, the first structurally characterized example of a 2-seleno-1-alkylimidazole mercury complex.
Collapse
Affiliation(s)
- Joshua H. Palmer
- Department of Chemistry, Columbia University, New York, New York 10027, USA
| | | |
Collapse
|
25
|
Hodage AS, Parashiva Prabhu C, Phadnis PP, Wadawale A, Priyadarsini K, Jain VK. Synthesis, characterization, structures and GPx mimicking activity of pyridyl and pyrimidyl based organoselenium compounds. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.08.035] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
26
|
Jalilehvand F, Amini Z, Parmar K. Cadmium(II) complex formation with selenourea and thiourea in solution: an XAS and 113Cd NMR study. Inorg Chem 2012; 51:10619-30. [PMID: 23016594 PMCID: PMC3498765 DOI: 10.1021/ic300852t] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The complexes formed in methanol solutions of Cd(CF(3)SO(3))(2) with selenourea (SeU) or thiourea (TU), for thiourea also in aqueous solution, were studied by combining (113)Cd NMR and X-ray absorption spectroscopy. At low temperature (~200 K), distinct (113)Cd NMR signals were observed, corresponding to CdL(n)(2+) species (n = 0-4, L = TU or SeU) in slow ligand exchange. Peak integrals were used to obtain the speciation in the methanol solutions, allowing stability constants to be estimated. For cadmium(II) complexes with thione (C═S) or selone (C═Se) groups coordinated in Cd(S/Se)O(5) or Cd(S/Se)(2)O(4) (O from MeOH or CF(3)SO(3)(-)) environments, the (113)Cd chemical shifts were quite similar, within 93-97 ppm and 189-193 ppm, respectively. However, the difference in the chemical shift for the Cd(SeU)(4)(2+) (578 pm) and Cd(TU)(4)(2+) (526 ppm) species, with CdSe(4) and CdS(4) coordination, respectively, shows less chemical shielding for the coordinated Se atoms than for S, in contrast to the common trend with increasing shielding in the following order: O > N > Se > S. In solutions dominated by mono- and tetra-thiourea/selenourea complexes, their coordination and bond distances could be evaluated by Cd K-edge extended X-ray absorption fine structure (EXAFS) spectroscopy. At ~200 K and high excess of thiourea, a minor amount (up to ~30%) of [Cd(TU)(5-6)](2+) species was detected by an upfield shift of the (113)Cd NMR signal (up to 423 ppm) and an amplitude reduction of the EXAFS oscillation. The amount was estimated by fitting linear combinations of simulated EXAFS spectra for [Cd(TU)(4)](2+) and [Cd(TU)(6)](2+) complexes. At room temperature, [Cd(TU)(4)](2+) was the highest complex formed, also in aqueous solution. Cd L(3)-edge X-ray absorption near edge structure (XANES) spectra of cadmium(II) thiourea solutions in methanol were used to follow changes in the CdS(x)O(y) coordination. The correlations found from the current and previous studies between (113)Cd NMR chemical shifts and different Cd(II) coordination environments are generally useful for evaluating cadmium coordination to thione-containing or Se-donor ligands in biochemical systems or for monitoring speciation in solution.
Collapse
Affiliation(s)
- Farideh Jalilehvand
- Department of Chemistry, University of Calgary, Calgary, AB, Canada T2N 1N4.
| | | | | |
Collapse
|
27
|
Sharma RK, Kedarnath G, Wadawale A, Betty CA, Vishwanadh B, Jain VK. Diorganotin(iv) 2-pyridyl selenolates: synthesis, structures and their utility as molecular precursors for the preparation of tin selenide nanocrystals and thin films. Dalton Trans 2012; 41:12129-38. [DOI: 10.1039/c2dt31197f] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
28
|
Sharma RK, Kedarnath G, Jain VK, Wadawale A, Pillai CGS, Nalliath M, Vishwanadh B. Copper(i) 2-pyridyl selenolates and tellurolates: Synthesis, structures and their utility as molecular precursors for the preparation of copper chalcogenide nanocrystals and thin films. Dalton Trans 2011; 40:9194-201. [DOI: 10.1039/c1dt10461f] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|