1
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Aragoni M, Arca M, Caltagirone C, Castellano C, Demartin F, Jones PG, Pivetta T, Podda E, Lippolis V, Murgia S, Picci G. Role of the Solvent in the Reactivity of Bis-4-imidazoline-2-selone Derivatives toward I 2: An Experimental and Theoretical Approach. J Org Chem 2022; 87:15448-15465. [DOI: 10.1021/acs.joc.2c01982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- M.Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042 Monserrato, Cagliari, Italy
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042 Monserrato, Cagliari, Italy
| | - Claudia Caltagirone
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042 Monserrato, Cagliari, Italy
| | - Carlo Castellano
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, I-20133Milano, Italy
| | - Francesco Demartin
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, I-20133Milano, Italy
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie der Technischen Universität Braunschweig, Hagenring 30, D-38106Braunschweig, Germany
| | - Tiziana Pivetta
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042 Monserrato, Cagliari, Italy
| | - Enrico Podda
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042 Monserrato, Cagliari, Italy
- Centro Servizi di Ateneo per la Ricerca-CeSAR, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042 Monserrato, Cagliari, Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042 Monserrato, Cagliari, Italy
| | - Sergio Murgia
- Dipartimento di Scienze della Vita e dell’ambiente, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042 Monserrato, Cagliari, Italy
| | - Giacomo Picci
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, I-09042 Monserrato, Cagliari, Italy
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2
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Saab M, Nelson DJ, Leech MC, Lam K, Nolan SP, Nahra F, Van Hecke K. Reactions of N-heterocyclic carbene-based chalcogenoureas with halogens: a diverse range of outcomes. Dalton Trans 2022; 51:3721-3733. [PMID: 35169826 DOI: 10.1039/d2dt00010e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have investigated the reactions of chalcogenoureas derived from N-heterocyclic carbenes, referred to here as [E(NHC)], with halogens. Depending on the structure of the chalcogenourea and the identity of the halogen, a diverse range of reactivity was observed and a corresponding range of structures was obtained. Cyclic voltammetry was carried out to characterise the oxidation and reduction potentials of these [E(NHC)] species; selenoureas were found to be easier to oxidise than the corresponding thioureas. In some cases, a correlation was found between the oxidation potential of these compounds and the electronic properties of the corresponding NHC. The reactivity of these chalcogenoureas with different halogenating reagents (Br2, SO2Cl2, I2) was then investigated, and products were characterised using NMR spectroscopy and single-crystal X-ray diffraction. X-ray analyses elucidated the solid-state coordination types of the obtained products, showing that a variety of possible adducts can be obtained. In some cases, we were able to extrapolate a structure/activity correlation to explain the observed trends in reactivity and oxidation potentials.
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Affiliation(s)
- Marina Saab
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, 9000 Ghent, Belgium.
| | - David J Nelson
- WestCHEM Department of Pure & Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, Scotland, UK
| | - Matthew C Leech
- School of Science, University of Greenwich, Chatham Maritime ME4 4TB, UK
| | - Kevin Lam
- School of Science, University of Greenwich, Chatham Maritime ME4 4TB, UK
| | - Steven P Nolan
- Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, 9000 Ghent, Belgium
| | - Fady Nahra
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, 9000 Ghent, Belgium. .,VITO (Flemish Institute for Technological Research), Boeretang 200, 2400 Mol, Belgium.
| | - Kristof Van Hecke
- XStruct, Department of Chemistry, Ghent University, Krijgslaan 281, Building S3, 9000 Ghent, Belgium.
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3
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Cauwenbergh T, Scattolin T, Simoens A, Tzouras NV, Stevens CV, Nolan SP. Continuous Flow Synthesis of Sulfur‐ and Selenium−NHC Compounds (NHC=
N
‐Heterocyclic Carbene). European J Org Chem 2022. [DOI: 10.1002/ejoc.202101296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Thibault Cauwenbergh
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S3 9000 Ghent Belgium
| | - Thomas Scattolin
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S3 9000 Ghent Belgium
| | - Andreas Simoens
- Department of Green Chemistry and Technology Synthesis Biosources and Bioorganic Chemistry (SynBioC) Research Group Ghent University Coupure Links 653 9000 Ghent Belgium
| | - Nikolaos V. Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S3 9000 Ghent Belgium
| | - Christian V. Stevens
- Department of Green Chemistry and Technology Synthesis Biosources and Bioorganic Chemistry (SynBioC) Research Group Ghent University Coupure Links 653 9000 Ghent Belgium
| | - Steven P. Nolan
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S3 9000 Ghent Belgium
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4
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Dedi, Lee PC, Wei PC, Chen YY. Thermoelectric Characteristics of A Single-Crystalline Topological Insulator Bi 2Se 3 Nanowire. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:819. [PMID: 33806921 PMCID: PMC8005119 DOI: 10.3390/nano11030819] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/19/2021] [Accepted: 03/20/2021] [Indexed: 11/16/2022]
Abstract
The discovery of topological insulators (TIs) has motivated detailed studies on their physical properties, especially on their novel surface states via strong spin-orbit interactions. However, surface-state-related thermoelectric properties are rarely reported, likely because of the involvement of their bulk-dominating contribution. In this work, we report thermoelectric studies on a TI bismuth selenide (Bi2Se3) nanowire (NW) that exhibit a larger surface/volume ratio. Uniform single-crystalline TI Bi2Se3 NWs were successfully synthesized using a stress-induced growth method. To achieve the study of the thermoelectric properties of a nanowire (NW), including electrical conductivity (σ), Seebeck coefficient (S), and thermal conductivity (κ), a special platform for simultaneously performing all measurements on a single wire was designed. The properties of σ, S, and κ of a 200 nm NW that was well precharacterized using transmission electron microscope (TEM) measurements were determined using the four-probe method, the two-probe EMF across ∇T measurement, and the 3ω technique, respectively. The integrated TE properties represented by the figure of merit ZT (S2σT/κ) were found to be in good agreement with a theoretical study of Bi2Se3 NW.
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Affiliation(s)
- Dedi
- Research Center for Electronics and Telecommunications (P2ET), Indonesian Institute of Sciences (LIPI), Bandung 40135, Indonesia
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan; (P.-C.L.); (Y.-Y.C.)
| | - Ping-Chung Lee
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan; (P.-C.L.); (Y.-Y.C.)
| | - Pai-Chun Wei
- Center for Condensed Matter Sciences and Center of Atomic Initiatives for New Materials, National Taiwan University, Taipei 10617, Taiwan;
| | - Yang-Yuan Chen
- Institute of Physics, Academia Sinica, Taipei 11529, Taiwan; (P.-C.L.); (Y.-Y.C.)
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5
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Karupnaswamy R, Mannarsamy M, Vaddamanu M, Prabusankar G. The First Fused N‐Heterocyclic Imidazole Pyridine Selones and Their Coordination Ability Towards Bismuth(III) Salts. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900882] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ramesh Karupnaswamy
- Department of Chemistry Indian Institute of Technology Hyderabad 502 285 Kandi Sangareddy Telangana India
| | - Maruthupandi Mannarsamy
- Department of Chemistry Indian Institute of Technology Hyderabad 502 285 Kandi Sangareddy Telangana India
| | - Moulali Vaddamanu
- Department of Chemistry Indian Institute of Technology Hyderabad 502 285 Kandi Sangareddy Telangana India
| | - Ganesan Prabusankar
- Department of Chemistry Indian Institute of Technology Hyderabad 502 285 Kandi Sangareddy Telangana India
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6
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Doddi A, Peters M, Tamm M. N-Heterocyclic Carbene Adducts of Main Group Elements and Their Use as Ligands in Transition Metal Chemistry. Chem Rev 2019; 119:6994-7112. [PMID: 30983327 DOI: 10.1021/acs.chemrev.8b00791] [Citation(s) in RCA: 302] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
N-Heterocyclic carbenes (NHC) are nowadays ubiquitous and indispensable in many research fields, and it is not possible to imagine modern transition metal and main group element chemistry without the plethora of available NHCs with tailor-made electronic and steric properties. While their suitability to act as strong ligands toward transition metals has led to numerous applications of NHC complexes in homogeneous catalysis, their strong σ-donating and adaptable π-accepting abilities have also contributed to an impressive vitalization of main group chemistry with the isolation and characterization of NHC adducts of almost any element. Formally, NHC coordination to Lewis acids affords a transfer of nucleophilicity from the carbene carbon atom to the attached exocyclic moiety, and low-valent and low-coordinate adducts of the p-block elements with available lone pairs and/or polarized carbon-element π-bonds are able to act themselves as Lewis basic donor ligands toward transition metals. Accordingly, the availability of a large number of novel NHC adducts has not only produced new varieties of already existing ligand classes but has also allowed establishment of numerous complexes with unusual and often unprecedented element-metal bonds. This review aims at summarizing this development comprehensively and covers the usage of N-heterocyclic carbene adducts of the p-block elements as ligands in transition metal chemistry.
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Affiliation(s)
- Adinarayana Doddi
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
| | - Marius Peters
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
| | - Matthias Tamm
- Technische Universität Braunschweig, Institut für Anorganische und Analytische Chemie, Hagenring 30, 38106 Braunschweig, Germany
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7
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Yadav S, Deka R, Raju S, Singh HB. Synthesis of N-heterocyclic nitrenium (NHN) ions and related donor systems: Coordination with d10-metal ions. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Yadav S, Deka R, Singh HB. Recent Developments in the Chemistry of NHC-based Selones: Syntheses, Applications and Reactivity. CHEM LETT 2019. [DOI: 10.1246/cl.180748] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Sangeeta Yadav
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Rajesh Deka
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
| | - Harkesh B. Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, India
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9
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Aragoni MC, Arca M, Blake AJ, Cadoni E, Copolovici LO, Isaia F, Lippolis V, Murgia S, Pop AM, Silvestru C, Tidey JP, Varga RA. Reaction of imidazoline-2-selone derivatives with mesityltellurenyl iodide: a unique example of a 3c-4e Se→Te←Se three-body system embedding a tellurenyl cation. NEW J CHEM 2019. [DOI: 10.1039/c9nj01593k] [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
1,2-Bis(3-methyl-4-imidazolin-2-selone)ethane was used to stabilize the first example of an authentic mesityltellurenyl cation, [MesTe]+, as a charge transfer adduct featuring a 3c-4e Se→Te←Se three-body system.
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Affiliation(s)
- M. Carla Aragoni
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Massimiliano Arca
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | | | - Enzo Cadoni
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Lucian O. Copolovici
- Faculty of Food Engineering
- Tourism and Environmental Protection, and Institute of Technical and Natural Sciences Research-Development-Innovation
- “Aurel Vlaicu” University
- Arad
- Romania
| | - Francesco Isaia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Sergio Murgia
- Dipartimento di Scienze Chimiche e Geologiche
- Università degli Studi di Cagliari
- 09042 Monserrato (Cagliari)
- Italy
| | - Alexandra M. Pop
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | - Cristian Silvestru
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
| | | | - Richard A. Varga
- Department of Chemistry
- Supramolecular Organic and Organometallic Chemistry Centre (SOOMCC)
- Faculty of Chemistry and Chemical Engineering
- Babeş-Bolyai University
- 400028 Cluj-Napoca
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10
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Donsbach C, Dehnen S. Formation of [(C
n
C
1
imTe)
4
Hg]
2+
(
n
= 6, 8) upon in‐situ Generation of Dialkylimidazole‐2‐Tellurones in Ionic Liquids at Room Temperature. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Carsten Donsbach
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) Philipps‐Universität Marburg Hans‐Meerwein‐Straße 4 35043 Marburg Germany
| | - Stefanie Dehnen
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW) Philipps‐Universität Marburg Hans‐Meerwein‐Straße 4 35043 Marburg Germany
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11
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Ritch JS. Synthesis and coordination chemistry of cyclic seleno- and telluroureas. PHYSICAL SCIENCES REVIEWS 2018. [DOI: 10.1515/psr-2017-0128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Abstract
Chalcogenated derivatives of N-heterocyclic carbene ligands have received increasing attention due to their diverse chemical reactivity and potential applications in fields such as medicine and materials chemistry. This chapter summarizes the synthetic methods for the preparation of cyclic heavy chalcogenoureas featuring heterocyclic cores and explores their diverse coordination chemistry with p- and d-block metals.
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Affiliation(s)
- Jamie S. Ritch
- Department of Chemistry , The University of Winnipeg , 515 Portage Avenue , Winnipeg , Manitoba R3B 2E9 , Canada
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12
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Nesterov V, Reiter D, Bag P, Frisch P, Holzner R, Porzelt A, Inoue S. NHCs in Main Group Chemistry. Chem Rev 2018; 118:9678-9842. [PMID: 29969239 DOI: 10.1021/acs.chemrev.8b00079] [Citation(s) in RCA: 518] [Impact Index Per Article: 86.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Since the discovery of the first stable N-heterocyclic carbene (NHC) in the beginning of the 1990s, these divalent carbon species have become a common and available class of compounds, which have found numerous applications in academic and industrial research. Their important role as two-electron donor ligands, especially in transition metal chemistry and catalysis, is difficult to overestimate. In the past decade, there has been tremendous research attention given to the chemistry of low-coordinate main group element compounds. Significant progress has been achieved in stabilization and isolation of such species as Lewis acid/base adducts with highly tunable NHC ligands. This has allowed investigation of numerous novel types of compounds with unique electronic structures and opened new opportunities in the rational design of novel organic catalysts and materials. This Review gives a general overview of this research, basic synthetic approaches, key features of NHC-main group element adducts, and might be useful for the broad research community.
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Affiliation(s)
- Vitaly Nesterov
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Dominik Reiter
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Prasenjit Bag
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Philipp Frisch
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Richard Holzner
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Amelie Porzelt
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
| | - Shigeyoshi Inoue
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center , Technische Universität München , Lichtenbergstrasse 4 , Garching bei München 85748 , Germany
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13
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Yadav S, Singh HB, Butcher RJ. Synthesis and Reactivity of Selones and Dihaloselones: Complexation of Selones with d8
- and d10
-Metal Ions. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700218] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Sangeeta Yadav
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai India
| | - Harkesh B. Singh
- Department of Chemistry; Indian Institute of Technology Bombay; 400076 Mumbai India
| | - Ray J. Butcher
- Department of Chemistry; Howard University; 20059 Washington DC USA
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14
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Yadav S, Singh HB, Zeller M, Butcher RJ. From Mixed-Valent Phenyltellurenyl Bromide Ph(Br2)TeTePh to the Isolation of [{(C6H5)Te}19O24Br5]Br4. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00953] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sangeeta Yadav
- Department
of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Harkesh B. Singh
- Department
of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
| | - Matthias Zeller
- Department
of Chemistry, Youngstown State University, Youngstown, Ohio 44555, United States
| | - Ray J. Butcher
- Department
of Chemistry, Howard University, Washington, D. C. 20059, United States
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15
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Yadav S, Raju S, Singh HB, Butcher RJ. Selone-stabilized aryltellurenyl cations. Dalton Trans 2016; 45:8458-67. [PMID: 27111528 DOI: 10.1039/c6dt01081d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controlled bromination of a diarylditelluride, R2Te2 (R = 2,6-dimethylphenyl) (6) in dichloromethane led to the formation of a Te(II)-Te(IV) mixed-valent tellurenyl bromide, RBr2TeTeR (7). A further reaction of 7 with 1,3-dibutylbenzimidazolin-2-selone, C15H22N2Se (L) (9), produced the first selone adduct of the 2,6-dimethylphenyltellurenyl cation with the 2,6-dimethylphenyltellurium dibromide anion, [(2,6-Me2C6H3)Te(L)](+)[(2,6-Me2C6H3)TeBr2](-) (10). The red colored cationic adduct 10 is not stable in acetonitrile and disproportionated to give the selone adduct of 2,6-dimethylphenyltellurenyl bromide, [(2,6-Me2C6H3)Te(L)Br] (11b) and bis(2,6-dimethylphenyl)tellurium dibromide, [(2,6-Me2C6H3)2TeBr2], (13). The metathesis reaction of 11b with AgBF4 produced a stable dark red colored selone adduct of the 2,6-dimethylphenyltellurenyl cation with the BF4(-) anion, [(2,6-Me2C6H3)Te(L)](+)BF4(-) (15). The selone adducts of aryltellurenyl halides, i.e. [(2,6-Me2C6H3)Te(L)X] (X = Cl, Br, I) (11a-11c), have been synthesized by a one-pot reaction of 6 with an equimolar mixture of 9 and 1,3-dibutylbenzimidazolin-2-dihaloselones, C15H22N2SeX2 (14a-14c). Triphenylphosphine (PPh3), when treated with [(2,6-Me2C6H3)Te(L)X] (11a-11c), substitutes selone from the adduct to afford the triphenylphosphine adducts of aryltellurenyl halides, [(2,6-Me2C6H3)Te(PPh3)X] (16a-16c).
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Affiliation(s)
- Sangeeta Yadav
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India.
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16
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Yadav S, Manjare ST, Singh HB, Butcher RJ. Transition metal mediated formation of dicationic diselenides stabilised by N-heterocyclic carbenes: designed synthesis. Dalton Trans 2016; 45:12015-27. [DOI: 10.1039/c6dt01425a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Designed syntheses of dicationic diselenides have been developed by (i) reduction of dihaloselones (routes A and B) and (ii) by oxidation of selone adducts of metal halides (route C).
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Affiliation(s)
- Sangeeta Yadav
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Sudesh T. Manjare
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
- Department of Chemistry
| | - Harkesh B. Singh
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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17
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Srinivas K, Sathyanarayana A, Naga Babu C, Prabusankar G. Bismuth(iii)dichalcogenones as highly active catalysts in multiple C–C bond formation reactions. Dalton Trans 2016; 45:5196-209. [DOI: 10.1039/c5dt04738b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Thirteen new bismuth(iii) dichalcogenone derivatives with diversified structural motifs were successfully isolated and used as potential catalysts for the synthesis of triaryl- or triheteroarylmethanes.
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Affiliation(s)
- Katam Srinivas
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Medak
- India-502 285
| | | | - Chatla Naga Babu
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Medak
- India-502 285
| | - Ganesan Prabusankar
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- Medak
- India-502 285
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18
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Addition of selenium(II) bromide to arylalkynylamides—a route to hypervalent T-shaped 10-Se-3 systems. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.06.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Engl PS, Senn R, Otth E, Togni A. Synthesis and Characterization of N-Trifluoromethyl N-Heterocyclic Carbene Ligands and Their Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00137] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Pascal S. Engl
- Department of Chemistry and
Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Remo Senn
- Department of Chemistry and
Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Elisabeth Otth
- Department of Chemistry and
Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Antonio Togni
- Department of Chemistry and
Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
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20
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Srinivas K, Suresh P, Babu CN, Sathyanarayana A, Prabusankar G. Heavier chalcogenone complexes of bismuth(iii)trihalides: potential catalysts for acylative cleavage of cyclic ethers. RSC Adv 2015. [DOI: 10.1039/c4ra17144f] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Heavier chalcogenone complexes of discrete mononuclear and dinuclear bismuth(iii)trihalides have been synthesized and used as potential catalyst in acylative cleavage of cyclic ethers.
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Affiliation(s)
- Katam Srinivas
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- ODF Campus
- Yeddumailaram
- India-502 205
| | - Paladugu Suresh
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- ODF Campus
- Yeddumailaram
- India-502 205
| | - Chatla Naga Babu
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- ODF Campus
- Yeddumailaram
- India-502 205
| | - Arruri Sathyanarayana
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- ODF Campus
- Yeddumailaram
- India-502 205
| | - Ganesan Prabusankar
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- ODF Campus
- Yeddumailaram
- India-502 205
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21
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Xu H, Chen G, Jin R, Chen D, Wang Y, Pei J, Zhang Y, Yan C, Qiu Z. Microwave-assisted synthesis of Bi2Se3ultrathin nanosheets and its electrical conductivities. CrystEngComm 2014. [DOI: 10.1039/c4ce00004h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ultrathin Bi2Se3nanosheets (30 nm) have been successfully fabricated with 1 kW microwave power for 1 minute. The maximum power factor of the sample can reach up to 157 μW m−1K−2at 523 K, which is larger than the samples with thicknesses ranging from 50 nm to 100 nm.
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Affiliation(s)
- Haiming Xu
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001, PR China
| | - Gang Chen
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001, PR China
| | - Rencheng Jin
- School of Chemistry & Materials Science
- Ludong University
- Yantai 264025, PR China
| | - Dahong Chen
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001, PR China
| | - Yu Wang
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001, PR China
| | - Jian Pei
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001, PR China
| | - Yongqiang Zhang
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001, PR China
| | - Chunshuang Yan
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001, PR China
| | - Zhuangzhuang Qiu
- Department of Chemistry
- Harbin Institute of Technology
- Harbin 150001, PR China
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