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Wang J, Ho PC, Craig MGJ, Cevallos A, Britten JF, Vargas-Baca I. An Unusual Macrocyclic Hexamer of an Iso-Tellurazole N-Oxide Featuring CTe … O Chalcogen Bonds is Formed by κ 6 -O Complexation to Fe(II) and Ni(II). Chemistry 2024; 30:e202302538. [PMID: 37793025 DOI: 10.1002/chem.202302538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/29/2023] [Accepted: 10/04/2023] [Indexed: 10/06/2023]
Abstract
Studies of the supramolecular chemistry of iso-tellurazole N-oxides have been confined to non-polar media until now. To overcome that limitation, an iso-tellurazole N-oxide was derivatized with a primary alcohol group; the compound is soluble in polar solvents and stable in acidic to neutral aqueous media. Nickel (II) and iron (II) form macrocyclic complexes with six molecules of that iso-tellurazole N-oxide in a hitherto not-observed macrocyclic arrangement defined by CTe⋅⋅⋅O chalcogen bonds and κ6 -O bound to the metal ion. This behaviour is in sharp contrast with the κn -Te (n=1,2,4) complexes formed by soft metal ions.
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Affiliation(s)
- Jin Wang
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4M1, Canada
| | - Peter C Ho
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4M1, Canada
| | - Matthew G J Craig
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4M1, Canada
| | - Alberto Cevallos
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4M1, Canada
| | - James F Britten
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4M1, Canada
| | - Ignacio Vargas-Baca
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4M1, Canada
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2
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Cyclization Reactions Involving 2-Aminoarenetellurols and Derivatives of α,β-Unsaturated Carboxylic Acids. HETEROATOM CHEMISTRY 2021. [DOI: 10.1155/2021/7140222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The reductive cyclization of arenetellurols carrying α,β-unsaturated amide functionalities in the ortho position was investigated. Conceptually, such compounds can form 1,3-tellurazoles without the involvement of the unsaturation in the ring closure, they can form 1,4-tellurazinone derivatives, or they can undergo ring closure to 1,5-tellurazepinones. Amides derived from acrylic and methacrylic acid generated 1,5-tellurazepinones while 2-cinnamylamidobenzenetellurol cyclized to a 1,3-tellurazole derivative. In contrast, the reaction of acetylenedicarboxylic acid and its derivatives with 2-aminoarenetellurols generated 1,4-tellurazepinones, including a derivative of novel tricyclic naphtho [1, 4]tellurazinone. A comparison with analogous reactions of sulfur congeners indicates that their chemistry is a good predictor for the products obtained from 2-aminoarenetellurols. Selected compounds were characterized by X-ray crystallography. The present work offers access to previously unexplored organotellurium heterocycles.
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Ho PC, Tomassetti V, Britten JF, Vargas-Baca I. Iso-Tellurazolium -N-Phenoxides: A Family of Te···O Chalcogen-Bonding Supramolecular Building Blocks. Inorg Chem 2021; 60:16726-16733. [PMID: 34672560 DOI: 10.1021/acs.inorgchem.1c02585] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Formal substitution of the oxygen atom of an iso-tellurazole N-oxide with deprotonated (ortho, meta, and para)-hydroxyphenyl groups generated molecules that readily aggregate through Te···O chalcogen bonding (ChB) interactions. The molecules undergo autoassociation in solution, as shown by variable temperature (VT) 1H NMR experiments and paralleling the behavior of iso-tellurazole N-oxides. Judicious adjustment of crystallization conditions enabled the isolation of either polymeric or macrocyclic aggregates. Among the latter, the ortho compound assembled a calixarene-like trimer, while the para isomer built a macrocyclic tetramer akin to a molecular square. The Te···O ChB distances in these structures range from 2.13 to 2.17 Å, comparable to those in the structures of iso-tellurazole N-oxides. DFT calculations estimate that the corresponding Te···O ChB energies are between -122 and -195 kJ mol-1 in model dimers and suggest that macrocyclic aggregation enhances these interactions.
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Affiliation(s)
- Peter C Ho
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Valerie Tomassetti
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - James F Britten
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Ignacio Vargas-Baca
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
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4
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Ho PC, Lomax J, Tomassetti V, Britten JF, Vargas-Baca I. Competing Effects of Chlorination on the Strength of Te⋅⋅⋅O Chalcogen Bonds Select the Structure of Mixed Supramolecular Macrocyclic Aggregates of Iso-Tellurazole N-Oxides. Chemistry 2021; 27:10849-10853. [PMID: 34018275 DOI: 10.1002/chem.202101425] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Indexed: 12/14/2022]
Abstract
Chlorination of 3-methyl-5-phenyl-1,2-tellurazole-2-oxide yielded the λ4 Te dichloro derivative. Its crystal structure demonstrates that the heterocycle retains its ability to autoassociate by chalcogen bonding (ChB) forming macrocyclic tetramers. The corresponding Te⋅⋅⋅O ChB distances are 2.062 Å, the shortest observed to date in aggregates of this type. DFT-D3 calculations indicate that while the halogenated molecule is stronger as a ChB donor it also is a weaker ChB acceptor; the overall effect is that the ChBs in the chlorinated homotetramer are not significantly stronger. However, partial halogenation or scrambling selectively yield the 2 : 2 heterotetramer with alternating λ4 Te and λ2 Te centers, which calculations identified as the thermodynamically preferred arrangement.
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Affiliation(s)
- Peter C Ho
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, L8S 4 M1, Hamilton, Ontario, Canada
| | - Justin Lomax
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, L8S 4 M1, Hamilton, Ontario, Canada
| | - Valerie Tomassetti
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, L8S 4 M1, Hamilton, Ontario, Canada
| | - James F Britten
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, L8S 4 M1, Hamilton, Ontario, Canada
| | - Ignacio Vargas-Baca
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, L8S 4 M1, Hamilton, Ontario, Canada
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10H-Pyrazino[2,3-b][1,4]benzotellurazine, a Novel Tellurium-Containing Heterocyclic System. HETEROATOM CHEMISTRY 2020. [DOI: 10.1155/2020/1765950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Condensation of 2,3-dichloropyrazine with 2-aminobenzenetellurole and 2-amino-5-methylbenzenetellurole, generated in situ by reduction of the corresponding ditellurides, resulted in the formation of novel 10H-pyrazino[2,3-b][1,4]benzotellurazine and its 7-methyl derivative. The products were purified via their well-crystallized 5,5-dibromo derivatives. X-ray crystallographic analysis of the title compound indicates that it has a pronounced V-shape and forms hydrogen-bonded dimers. Te, N-containing heterocycles have the potential of offering access to supramolecular assemblies.
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Wang J, Ho PC, Britten JF, Tomassetti V, Vargas-Baca I. Structural diversity of the complexes of monovalent metal d10 ions with macrocyclic aggregates of iso-tellurazole N-oxides. NEW J CHEM 2019. [DOI: 10.1039/c9nj02217a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iso-tellurazole N-oxides yield a remarkable variety of structures with coinage-metal monocations.
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Affiliation(s)
- Jin Wang
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada
| | - Peter C. Ho
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada
| | - James F. Britten
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada
| | - Valerie Tomassetti
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada
| | - Ignacio Vargas-Baca
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada
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8
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Lee LM, Corless V, Luu H, He A, Jenkins H, Britten JF, Adam Pani F, Vargas-Baca I. Synthetic and structural investigations of bis(N-alkyl-benzoselenadiazolium) cations. Dalton Trans 2019; 48:12541-12548. [DOI: 10.1039/c9dt02311a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A variety of supramolecular structures is formed by selenadiazolium cations linked by hydrocarbon bridges.
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Affiliation(s)
- Lucia Myongwon Lee
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4 M1
| | - Victoria Corless
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4 M1
| | - Helen Luu
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4 M1
| | - Allan He
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4 M1
| | - Hilary Jenkins
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4 M1
| | - James F. Britten
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4 M1
| | - Faisal Adam Pani
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4 M1
| | - Ignacio Vargas-Baca
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4 M1
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9
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Ho PC, Bui R, Cevallos A, Sequeira S, Britten JF, Vargas-Baca I. Macrocyclic complexes of Pt(ii) and Rh(iii) with iso-tellurazole N-oxides. Dalton Trans 2019; 48:4879-4886. [DOI: 10.1039/c9dt00500e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Tetramers of iso-tellurazole N-oxides form stable macrocyclic complexes with Pt(ii) and Rh(iii) in solution.
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Affiliation(s)
- Peter C. Ho
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4M1
| | - Robert Bui
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4M1
| | - Alberto Cevallos
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4M1
| | - Shanel Sequeira
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4M1
| | - James F. Britten
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4M1
| | - Ignacio Vargas-Baca
- McMaster University
- Department of Chemistry and Chemical Biology
- Hamilton
- Canada L8S 4M1
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Vogel L, Wonner P, Huber SM. Chalcogen Bonding: An Overview. Angew Chem Int Ed Engl 2018; 58:1880-1891. [PMID: 30225899 DOI: 10.1002/anie.201809432] [Citation(s) in RCA: 359] [Impact Index Per Article: 59.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Indexed: 01/23/2023]
Abstract
In the last few decades, "unusual" noncovalent interactions like anion-π and halogen bonding have emerged as interesting alternatives to the ubiquitous hydrogen bonding in many research areas. This is also true, to a somewhat lesser extent, for chalcogen bonding, the noncovalent interaction involving Lewis acidic chalcogen centers. Herein, we aim to provide an overview on the use of chalcogen bonding in crystal engineering and in solution, with a focus on the recent developments concerning intermolecular chalcogen bonding in solution-phase applications. In the solid phase, chalcogen bonding has been used for the construction of nano-sized structures and the self-assembly of sophisticated self-complementary arrays. In solution, until very recently applications mostly focused on intramolecular interactions which stabilized the conformation of intermediates or reagents. In the last few years, intermolecular chalcogen bonding has increasingly also been exploited in solution, most notably in anion recognition and transport as well as in organic synthesis and organocatalysis.
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Affiliation(s)
- Lukas Vogel
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Patrick Wonner
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
| | - Stefan M Huber
- Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstraße 150, 44801, Bochum, Germany
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Affiliation(s)
- Lukas Vogel
- Fakultät für Chemie und Biochemie; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Deutschland
| | - Patrick Wonner
- Fakultät für Chemie und Biochemie; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Deutschland
| | - Stefan M. Huber
- Fakultät für Chemie und Biochemie; Ruhr-Universität Bochum; Universitätsstraße 150 44801 Bochum Deutschland
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12
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Ho PC, Rafique J, Lee J, Lee LM, Jenkins HA, Britten JF, Braga AL, Vargas-Baca I. Synthesis and structural characterisation of the aggregates of benzo-1,2-chalcogenazole 2-oxides. Dalton Trans 2018; 46:6570-6579. [PMID: 28429811 DOI: 10.1039/c7dt00612h] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Iodine oxidation of bis[2-(hydroxyiminomethyl)phenyl] dichalcogenides yields benzo-1,2-chalcogenazole 2-oxides. Annulated derivatives of iso-tellurazole N-oxides spontaneously aggregate into cyclic tetra- and hexamers through TeO chalcogen bonding; the structures of the co-crystals with benzene and CH2Cl2 illustrate the ability of these macrocycles to interact with small guest molecules. The selenium congener crystallizes forming a supramolecular polymer. VT NMR indicates that both compounds aggregate in solution but only at low temperature in the selenium case. The different abilities of these molecules to engage in supramolecular interactions are interpreted on the basis of their electronic properties evaluated with DFT-D3 calculations.
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Affiliation(s)
- Peter C Ho
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1.
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Ho PC, Jenkins HA, Britten JF, Vargas-Baca I. Building new discrete supramolecular assemblies through the interaction of iso-tellurazole N-oxides with Lewis acids and bases. Faraday Discuss 2017; 203:187-199. [PMID: 28731106 DOI: 10.1039/c7fd00075h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The supramolecular macrocycles spontaneously assembled by iso-tellurazole N-oxides are stable towards Lewis bases as strong as N-heterocyclic carbenes (NHC) but readily react with Lewis acids such as BR3 (R = Ph, F). The electron acceptor ability of the tellurium atom is greatly enhanced in the resulting O-bonded adducts, which consequently enables binding to a variety of Lewis bases that includes acetonitrile, 4-dimethylaminopyridine, 4,4'-bipyridine, triphenyl phosphine, a N-heterocyclic carbene and a second molecule of iso-tellurazole N-oxide.
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Affiliation(s)
- Peter C Ho
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1.
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Pietrasiak E, Togni A. Synthesis and Characterization of Fluorinated Hypervalent Tellurium Derivatives. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00535] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ewa Pietrasiak
- 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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Shimada K, Taneichi Y, Korenaga T. A Convenient Synthesis of Isotellurazoles via Deoxygenation of Isotellurazole Te-Oxide Oligomers by Using a Combination of Ph3P/I2. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13773] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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