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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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Zha J, Wang Z, Liu B, Tan Q, Xu B. Multicomponent Reaction of Isocyanide, Ditelluride, and Mn(III) Carboxylate: Synthesis of N-Acyl Tellurocarbamate. Org Lett 2022; 24:2863-2867. [PMID: 35420436 DOI: 10.1021/acs.orglett.2c00824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A multicomponent reaction of isocyanides, ditellurides and manganese(III) carboxylates under mild reaction conditions leads to the synthesis of various N-acyl tellurocarbamates. This method demonstrates good functional tolerance and broad substrate scope and, as a result, is especially suitable for the postfunctionalization of complicated molecules such as drugs. The given method can be further extended to the synthesis of selenocarbamates.
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Affiliation(s)
- Jianjian Zha
- Department of Chemistry, Innovative Drug Research Center, Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai 200444, China
| | - Zhuoer Wang
- Department of Chemistry, Innovative Drug Research Center, Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai 200444, China
| | - Bingxin Liu
- Department of Chemistry, Innovative Drug Research Center, Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai 200444, China
| | - Qitao Tan
- Department of Chemistry, Innovative Drug Research Center, Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai 200444, China
| | - Bin Xu
- Department of Chemistry, Innovative Drug Research Center, Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai 200444, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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3
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Eliseeva SV, Travis JR, Nagy SG, Smihosky AM, Foley CM, Kauffman AC, Zaleski CM, Petoud S. Visible and near-infrared emitting heterotrimetallic lanthanide-aluminum-sodium 12-metallacrown-4 compounds: discrete monomers and dimers. Dalton Trans 2022; 51:5989-5996. [PMID: 35352078 DOI: 10.1039/d1dt04277g] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The luminescence properties of two types of heterotrimetallic aluminum-lanthanide-sodium 12-metallacrown-4 compounds are presented here, LnNa(ben)4[12-MCAl(III)N(shi)-4] (LnAl4Na) and {LnNa[12-MCAl(III)N(shi)-4]}2(iph)4 (Ln2Al8Na2), where Ln = GdIII, TbIII, ErIII, and YbIII, MC is metallacrown, ben- is benzoate, shi3- is salicylhydroximate, and iph2- is isophthalate. The aluminum-lanthanide-sodium metallacrowns formed with benzoate are discrete monomers while, upon replacement of the benzoate with the dicarboxylate isophthalate, two individual metallacrowns can be joined to form a dimer. In the solid state, the terbium version of each structure type displays emission in the visible region, and the erbium and ytterbium complexes emit in the near-infrared. The luminescence lifetimes (τobs) and quantum yields have been collected under ligand excitation (QLLn) for both LnAl4Na monomers and Ln2Al8Na2 dimers. Several of these values tend to be shorter (luminescence lifetimes) and smaller (quantum yields) than the corresponding values recorded for the structurally similar gallium-lanthanide monomer and dimer 12-MC-4 molecules. However, the quantum yield value recorded for the visible emitting Tb2Al8Na2 dimer, 43.9%, is the highest value observed in the solid state to date for a TbIII based metallacrown.
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Affiliation(s)
- Svetlana V Eliseeva
- Centre de Biophysique Moléculaire, CNRS UPR 4301, 45071 Orléans Cedex 2, France.
| | - Jordan R Travis
- Department of Chemistry and Biochemistry, Shippensburg University, 1871 Old Main Dr., Shippensburg, PA 17257, USA.
| | - Sarah G Nagy
- Department of Chemistry and Biochemistry, Shippensburg University, 1871 Old Main Dr., Shippensburg, PA 17257, USA.
| | - Alyssa M Smihosky
- Department of Chemistry and Biochemistry, Shippensburg University, 1871 Old Main Dr., Shippensburg, PA 17257, USA.
| | - Collin M Foley
- Department of Chemistry and Biochemistry, Shippensburg University, 1871 Old Main Dr., Shippensburg, PA 17257, USA.
| | - Abigail C Kauffman
- Department of Chemistry and Biochemistry, Shippensburg University, 1871 Old Main Dr., Shippensburg, PA 17257, USA.
| | - Curtis M Zaleski
- Department of Chemistry and Biochemistry, Shippensburg University, 1871 Old Main Dr., Shippensburg, PA 17257, USA.
| | - Stéphane Petoud
- Centre de Biophysique Moléculaire, CNRS UPR 4301, 45071 Orléans Cedex 2, France.
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Pierre J, Hill ZM, Fronczek FR, Junk T. Unexpected ring closures leading to 2- N, N-dialkylaminoareno[1,3]tellurazoles. NEW J CHEM 2022. [DOI: 10.1039/d2nj03234a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
One step, up to 78% isolated yield, six examples. Facile access to 2-N,N-dialkylbenzo[1,3]tellurazoles.
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Affiliation(s)
- Johan Pierre
- Department of Chemistry, University Institute of Technology of Poitiers, 86073 Poitiers, Cedex 9, France
| | - Zachary M. Hill
- Department of Chemistry, University of Louisiana at Lafayette, P. O. Box 43700, Lafayette, LA, 70504, USA
| | - Frank R. Fronczek
- Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA 70803, USA
| | - Thomas Junk
- Department of Chemistry, University of Louisiana at Lafayette, P. O. Box 43700, Lafayette, LA, 70504, USA
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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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7
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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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Synthesis and characterization of aryltellurium compounds including mixed-valence derivatives − evaluation of Te⋅⋅⋅S, Te⋅⋅⋅X and X⋅⋅⋅X (X = Br, I) interactions. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121553] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Travis JR, Van Trieste III GP, Zeller M, Zaleski CM. Crystal structures of two dysprosium-aluminium-sodium [3.3.1] metallacryptates that form two-dimensional sheets. Acta Crystallogr E Crystallogr Commun 2020; 76:1378-1390. [PMID: 32844034 PMCID: PMC7405589 DOI: 10.1107/s2056989020010130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 07/22/2020] [Indexed: 11/19/2022]
Abstract
The two [3.3.1] metallacryptate complexes, namely, poly[[μ3-acetato-hexa-kis-(μ-N,N-di-methyl-formamide)-bis-(N,N-di-methyl-formamide)bis-[salicyl-hydroxi-mato(2-)]hepta-kis-[salicyl-hydrox-im-ato(3-)]hexa-aluminium(III)dysprosium(III)penta-sodium(I)] N,N-di-methyl-formamide tetra-solvate monohydrate], [DyAl6Na5(OAc)(Hshi)2(shi)7(DMF)8]·4DMF·H2O or {[DyAl6Na5(C7H5NO3)2(C7H4NO3)7(C2H3O2)(C3H7NO)8]·4C3H7NO·H2O} n , 1, and poly[[di-μ4-acetato-nona-kis-(μ-N,N-di-methyl-form-amide)-octa-kis-(N,N-di-methyl-formamide)tetra-kis-[sali-cyl-hydroximato(2-)]tetra-deca-kis-[salicyl-hydroximato(3-)]dodeca-aluminium(III)didysprosium(III)deca-sodium(I)] N,N-di-methyl-form-amide 6.335-solvate], [DyAl6Na5(OAc)(Hshi)2(shi)7(DMF)8.5]2·6.335DMF or {[Dy2Al12Na10(C7H5NO3)4(C7H4NO3)14(C2H3O2)2(C3H7NO)17]·6.335C3H7NO} n , 2, where shi3- is salicyl-hydroximate and DMF is N,N-di-methyl-formamide, both consist of an aluminium-based metallacryptand. In 1 and 2, the metallacryptand encapsulates a dysprosium(III) ion in the central cavity, and the resulting metallacryptates are connected to each other via sodium-DMF linkages to generate a two-dimensional sheet. The metallacryptates of 1 and 2 are the three-dimensional analogues of metallacrowns as the metallacryptates contain a metal-nitro-gen-oxygen cyclic repeat unit throughout the complexes. For 1 the building block of the two-dimensional sheet is comprised of only one type of metallacryptate, which is connected to four neighboring metallacryptates via four sodium-DMF linkages. In 2, the building block is a dimeric unit of two metallacryptates. Each dimeric metallacryptate unit is connected to four other dimeric units via six sodium-DMF linkages. The two metallacryptates of each dimeric unit can be considered enanti-omers of each other. In both 1 and 2, chirality is imparted to the metallacryptate due to the Λ and Δ propeller configurations of the four octa-hedral aluminium ions of the metallacryptand shell.
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Affiliation(s)
- Jordan R. Travis
- Department of Chemistry and Biochemistry, Shippensburg University, Shippensburg, PA 17257, USA
| | | | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Curtis M. Zaleski
- Department of Chemistry and Biochemistry, Shippensburg University, Shippensburg, PA 17257, USA
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Affiliation(s)
- Martin Breugst
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Germany
| | - Jonas J. Koenig
- Department für Chemie Universität zu Köln Greinstraße 4 50939 Köln Germany
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12
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13
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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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15
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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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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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Gleiter R, Haberhauer G, Werz DB, Rominger F, Bleiholder C. From Noncovalent Chalcogen-Chalcogen Interactions to Supramolecular Aggregates: Experiments and Calculations. Chem Rev 2018; 118:2010-2041. [PMID: 29420879 DOI: 10.1021/acs.chemrev.7b00449] [Citation(s) in RCA: 200] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This review considers noncovalent bonds between divalent chalcogen centers. In the first part we present X-ray data taken from the solid state structures of dimethyl- and diphenyl-dichalcogenides as well as oligoalkynes kept by alkyl-sulfur, -selenium, and -tellurium groups. Furthermore, we analyzed the solid state structures of medium sized (12-24 ring size) selenium coronands and medium to large rings with alkyne and alkene units between two chalcogen centers. The crystal structures of the cyclic structures revealed columnar stacks with close contacts between neighboring rings via noncovalent interactions between the chalcogen centers. To get larger space within the cavities, rings with diyne units between the chalcogen centers were used. These molecules showed channel-like structures in the solid state. The flexibility of the rings permits inclusion of guest molecules such as five-membered heterocycles and aromatic six-membered rings. In the second part we discuss the results of quantum chemical calculations. To treat properly the noncovalent bonding between chalcogens, we use diffuse augmented split valence basis sets in combination with electron correlation methods. Our model substances were 16 dimers consisting of two Me-X-Me (X = O, S, Se, Te) pairs and dimers of Me-X-Me/Me-X-CN (X = O, S, Se, Te) pairs. The calculations show the anticipated increase of the interaction energy from (Me-O-Me)2 (-2.15 kcal/mol) to (Me-O-Me/Me-Te-CN) (-6.59 kcal/mol). An analysis by the NBO method reveals that in the case of the chalcogen centers O and S the hydrogen bridges between the molecules dominate. However, in the case of Se and Te the major bonding between the pairs originates from dispersion forces between the chalcogen centers. It varies between -1.7 and -4.0 kcal/mol.
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Affiliation(s)
- Rolf Gleiter
- Organisch-Chemisches Institut, Universität Heidelberg , Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Gebhard Haberhauer
- Institut für Organische Chemie, Universität Duisburg-Essen , Universitätsstraße 7, D-45117 Essen, Germany
| | - Daniel B Werz
- Institut für Organische Chemie, Technische Universität Braunschweig , Hagenring 30, D-38106 Braunschweig, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Universität Heidelberg , Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Christian Bleiholder
- Department of Chemistry and Biochemistry & Institute of Molecular Biophysics, Florida State University , Tallahassee, Florida 32306-4390, United States
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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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19
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Ho PC, Lee LM, Jenkins H, Britten JF, Vargas-Baca I. Influence of acidic media on the supramolecular aggregation of iso-tellurazole N-oxides. CAN J CHEM 2016. [DOI: 10.1139/cjc-2015-0389] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Iso-tellurazole N-oxides are promising supramolecular building blocks. While in neutral solutions, they form tetra- and hexameric macrocyclic aggregates linked by Te···O secondary bonding (σ hole interactions or chalcogen bonds), protonation of the oxygen atom in acidic media disrupts such supramolecular association. The process is reversible and, consequently, can be used to switch on and off the self-assembly process. Hammett acidity measurements gave pKa values of –3.2 for the protonated molecules. Adducts with HCl and HBr were isolated and structurally characterized. Protonation in solution led to the crystallization of a new polymorph of 3-methyl-5-phenyl-1,2-tellurazole N-oxide, which features a unique polymeric arrangement.
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Affiliation(s)
- Peter C. Ho
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
| | - Lucia Myongwon Lee
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
| | - Hilary Jenkins
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
| | - James F. Britten
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
| | - Ignacio Vargas-Baca
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1, Canada
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Ho PC, Szydlowski P, Sinclair J, Elder PJW, Kübel J, Gendy C, Lee LM, Jenkins H, Britten JF, Morim DR, Vargas-Baca I. Supramolecular macrocycles reversibly assembled by Te(…)O chalcogen bonding. Nat Commun 2016; 7:11299. [PMID: 27090355 PMCID: PMC4838886 DOI: 10.1038/ncomms11299] [Citation(s) in RCA: 141] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 03/11/2016] [Indexed: 12/25/2022] Open
Abstract
Organic molecules with heavy main-group elements frequently form supramolecular links to electron-rich centres. One particular case of such interactions is halogen bonding. Most studies of this phenomenon have been concerned with either dimers or infinitely extended structures (polymers and lattices) but well-defined cyclic structures remain elusive. Here we present oligomeric aggregates of heterocycles that are linked by chalcogen-centered interactions and behave as genuine macrocyclic species. The molecules of 3-methyl-5-phenyl-1,2-tellurazole 2-oxide assemble a variety of supramolecular aggregates that includes cyclic tetramers and hexamers, as well as a helical polymer. In all these aggregates, the building blocks are connected by Te(…)O-N bridges. Nuclear magnetic resonance spectroscopic experiments demonstrate that the two types of annular aggregates are persistent in solution. These self-assembled structures form coordination complexes with transition-metal ions, act as fullerene receptors and host small molecules in a crystal.
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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
| | - Patrick Szydlowski
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Jocelyn Sinclair
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Philip J W Elder
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Joachim Kübel
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Chris Gendy
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Lucia Myongwon Lee
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Hilary Jenkins
- 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
| | - Derek R Morim
- 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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21
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Karjalainen MM, Sanchez-Perez C, Rautiainen JM, Oilunkaniemi R, Laitinen RS. Chalcogen–chalcogen secondary bonding interactions in trichalcogenaferrocenophanes. CrystEngComm 2016. [DOI: 10.1039/c6ce00451b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Abstract
This tutorial review elucidates the fundamental concepts necessary for an understanding of the unique structures and reactivities of tellurium compounds.
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Affiliation(s)
| | - Risto S. Laitinen
- Laboratory of Inorganic Chemistry
- Center for Molecular Materials
- University of Oulu
- Finland
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24
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Srungavruksham NK, Baskar V. 12‐Membered Macrocycles Containing Ditelluroxane and Selenotelluroxane Units. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100876] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Viswanathan Baskar
- School of Chemistry, University of Hyderabad, P. O. Central University, Hyderabad 500046, Andhra Pradesh, India
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