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Bélanger-Chabot G, Fontaine FG. Mono-boratabenzene and -phospholyl zirconocene(IV) derivatives: Towards mixed heterocycles zirconocene complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.07.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Braunschweig H, Hupp F, Krummenacher I, Mailänder L, Rauch F. Ring Expansions of Boroles with Diazo Compounds: Steric Control of C or N Insertion and Aromatic/Nonaromatic Products. Chemistry 2015; 21:17844-9. [PMID: 26482113 DOI: 10.1002/chem.201503048] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Indexed: 11/06/2022]
Abstract
Access to novel imine-substituted 1,2-azaborinines, as well as highly arylated boracyclohexa-3,5-dienes has been developed by ring expansion of boroles with diazoalkanes with varying degrees of steric bulk. The formation of a diazoalkane intermediate is also discussed for the reaction of ortho-brominated p-tolyl-azide with 1,2,3,4,5-pentaphenylborole. Structural details as well as UV/Vis spectroscopic and cyclic voltammetric data are provided. These boron-containing heterocycles have the potential to serve as building blocks for boron-containing materials.
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Affiliation(s)
- Holger Braunschweig
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany) http://www-anorganik.ak-braunschweig.chemie.uni-wuerzburg.de/.
| | - Florian Hupp
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany) http://www-anorganik.ak-braunschweig.chemie.uni-wuerzburg.de/
| | - Ivo Krummenacher
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany) http://www-anorganik.ak-braunschweig.chemie.uni-wuerzburg.de/
| | - Lisa Mailänder
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany) http://www-anorganik.ak-braunschweig.chemie.uni-wuerzburg.de/
| | - Florian Rauch
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany) http://www-anorganik.ak-braunschweig.chemie.uni-wuerzburg.de/
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Braunschweig H, Ghosh S, Jimenez-Halla JOC, Klein JH, Lambert C, Radacki K, Steffen A, Vargas A, Wahler J. A combined experimental and theoretical study on the isomers of 2,3,4,5-tetracarba-nido-hexaborane(6) derivatives and their photophysical properties. Chemistry 2014; 21:210-8. [PMID: 25351663 DOI: 10.1002/chem.201405017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Indexed: 11/08/2022]
Abstract
Building upon our ongoing studies on the high-yield synthetic route to 2,3,4,5-tetracarba-1,6-nido hexaborane derivative 5, we continue to explore the chemistry of this system to isolate a range of perphenylated C4 B2 -type carborane isomers. As a result, the photolysis of 5 for an elongated period yielded 6, which exhibits an intense luminescence upon excitation with a UV lamp (λex =366 nm). In contrast, the conversion of 5 under thermal conditions (microwave heating) generated the isomer 7, which does not show any luminescence. The structural disparity among the three isomers 5-7 is the position of the butadiene moiety with respect to the C4 B2 -carborane cage as deduced from single-crystal X-ray diffraction analyses. In an attempt to generate the classical structural motif of 5, an equimolar amount of KOtBu was added to a THF solution of 5, which immediately provided the boratacyclopentadiene derivative 8 in good yield. The observed rearrangement reactions were further investigated by quantum chemical calculations to suggest a plausible reaction pathway. According to the DFT calculations, the energetically favored reaction mechanism most likely involves tricyclic transition states and classical intermediate structures. In addition, the fluorescence emission properties of 6 were investigated in solution as well as in the solid state.
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Affiliation(s)
- Holger Braunschweig
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84623.
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Légaré MA, Bélanger-Chabot G, De Robillard G, Languérand A, Maron L, Fontaine FG. Insights into the Formation of Borabenzene Adducts via Ligand Exchange Reactions and TMSCl Elimination from Boracyclohexadiene Precursors. Organometallics 2014. [DOI: 10.1021/om500524j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Marc-André Légaré
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
| | - Guillaume Bélanger-Chabot
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
| | - Guillaume De Robillard
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
| | - André Languérand
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
| | - Laurent Maron
- Université de Toulouse, INSA, UPS, LCPNO, CNRS, UMR 5215 CNRS-UPS-INSA, 135 avenue de Rangueil, Toulouse, France
| | - Frédéric-Georges Fontaine
- Département
de Chimie, Centre de Catalyse et de Chimie Verte (C3V), Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada G1V 0A6
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Barnes SS, Légaré MA, Maron L, Fontaine FG. Reactivity of a Cl-boratabenzene Pt(ii) complex with Lewis bases: generation of the kinetically favoured Cl-boratabenzene anion. Dalton Trans 2011; 40:12439-42. [DOI: 10.1039/c1dt11756d] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Yuan Y, Chen Y, Li G, Xia W. Reactions of Boratabenzene Yttrium Complexes with KN(SiMe3)2: Salt Elimination and π-Ligand Displacement. Organometallics 2008. [DOI: 10.1021/om800770a] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuanyuan Yuan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Yaofeng Chen
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Guangyu Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China
| | - Wei Xia
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, People's Republic of China
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Ly HV, Forster TD, Corrente AM, Eisler DJ, Konu J, Parvez M, Roesler R. Alkali-Metal Sandwich Complexes of a 1,2-Diaza-3,5-diborolyl Ligand Featuring η1, η2, η3, and η4 Coordination Modes. Organometallics 2007. [DOI: 10.1021/om061091x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hanh V. Ly
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Taryn D. Forster
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Andrea M. Corrente
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Dana J. Eisler
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Jari Konu
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Masood Parvez
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Roland Roesler
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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Xanthopoulou MN, Hadjikakou SK, Hadjiliadis N, Michaelides A, Skoulika S, Kourkoumelis N, Bakas T. Synthesis, structural characterization and study of {[K(H2mna)2]+·[K(μ-OH)2]−·4H2O}n (H2mna=2-mercapto-nicotinic acid). A supramolecular architecture of inorganic/metal-organic hybrid self-assembled by strong hydrogen bonds and π–π interactions. Inorganica Chim Acta 2006. [DOI: 10.1016/j.ica.2005.09.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Sadimenko AP. Organometallic Complexes of B-, Si- (Ge-), and P- (As-, Sb-) Analogues of Pyridine. ADVANCES IN HETEROCYCLIC CHEMISTRY 2005. [DOI: 10.1016/s0065-2725(05)89003-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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