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Wütz T, Diab F, Wesemann L. Synthesis and Coordination Chemistry of a Chelating P–Sn Ligand Based on Stanna‐
closo
‐dodecaborate. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700471] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Tobias Wütz
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Fatima Diab
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Lars Wesemann
- Institut für Anorganische Chemie Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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2
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Gao Y, Lin YJ, Han YF, Jin GX. Efficient synthesis of carborane azo derivatives and their reactivity. Dalton Trans 2017; 46:1585-1592. [DOI: 10.1039/c6dt04550b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
An iridium(iii)-catalyzed C–N-bond-forming direct synthesis of carborane azo derivatives was developed.
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Affiliation(s)
- Yang Gao
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Material
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
- Shanghai
| | - Yue-Jian Lin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Material
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
- Shanghai
| | - Ying-Feng Han
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Material
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
- Shanghai
| | - Guo-Xin Jin
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Material
- Collaborative Innovation Center of Chemistry for Energy Materials
- Department of Chemistry
- Fudan University
- Shanghai
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3
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Konieczka SZ, Drisch M, Edkins K, Hailmann M, Finze M. Polyfluorinated carba-closo-dodecaboranes with amino and ammonio substituents bonded to boron. Dalton Trans 2015; 44:19576-86. [PMID: 26172122 DOI: 10.1039/c5dt02055g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The inner salts x-H3N-closo-1-CB11H11 (x = 12, 2) and 7-H3N-12-F-closo-1-CB11H11 were fluorinated with elemental fluorine in anhydrous hydrogen fluoride to give the B-perfluorinated ammonio derivatives 1-H-x-H3N-closo-1-CB11F10 (x = 12, 7, 2). Deprotonation of the ammonio group yielded the corresponding amino-functionalized anions [1-H-x-H2N-closo-1-CB11F10](-) (x = 12, 7, 2) that were isolated as [Et4N](+) salts. Hydrolysis of the highly fluorinated inner salts 1-H-x-H3N-closo-1-CB11F10 (x = 12, 7, 2) is very slow in acidic aqueous solutions. This stability of the ammonio derivatives is unprecedented because the related fluorinated anion [1-H2N-closo-1-CB11F11](-) is immediately hydrolyzed to simple boron species in the presence of aqueous acids. The ammonio derivatives 1-H-x-H3N-closo-1-CB11F10 (x = 12, 7, 2) are much more acidic compared to their non-fluorinated counterparts as assessed from potentiometric titrations and DFT calculations. The inner salts and the anions were characterized by NMR and vibrational sepectroscopy. Solid-sate structures of 1-H-12-H3N-closo-1-CB11F10·H2O, 1-H-7-H3N-closo-1-CB11F10·diglyme, 1-H-2-H3N-closo-1-CB11F10·0.5H2O, 7-H3N-12-F-closo-1-CB11H10·(CH3)2CO and [Et4N][1-H-12-H2N-closo-1-CB11F10] were determined by single-crystal X-ray diffraction.
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Affiliation(s)
- Szymon Z Konieczka
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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4
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Cheng R, Zhang J, Zhang J, Qiu Z, Xie Z. Facile Synthesis of N
-Carboranyl Amines through an ortho
-Carboryne Intermediate. Angew Chem Int Ed Engl 2015; 55:1751-4. [DOI: 10.1002/anie.201507952] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Ruofei Cheng
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong, Shatin; N.T. Hong Kong China
| | - Jiji Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong, Shatin; N.T. Hong Kong China
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong, Shatin; N.T. Hong Kong China
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5
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Cheng R, Zhang J, Zhang J, Qiu Z, Xie Z. Facile Synthesis of N
-Carboranyl Amines through an ortho
-Carboryne Intermediate. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507952] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ruofei Cheng
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jie Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong, Shatin; N.T. Hong Kong China
| | - Jiji Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong, Shatin; N.T. Hong Kong China
| | - Zaozao Qiu
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Zuowei Xie
- Shanghai-Hong Kong Joint Laboratory in Chemical Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong, Shatin; N.T. Hong Kong China
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6
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Hailmann M, Konieczka SZ, Himmelspach A, Löblein J, Reiss GJ, Finze M. Carba-closo-dodecaborate anions with two functional groups: [1-R-12-HC≡C-closo-1-CB₁₁H₁₀]⁻ (R = CN, NC, CO₂H, C(O)NH₂, NHC(O)H). Inorg Chem 2014; 53:9385-99. [PMID: 25140733 DOI: 10.1021/ic501526g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Disubstituted carba-closo-dodecaborate anions with one functional group bonded to the cluster carbon atom and one ethynyl group bonded to the antipodal boron atom were synthesized from easily accessible {closo-1-CB11} clusters. [Et4N][1-NC-12-HC≡C-closo-1-CB11H10] ([Et4N]4b) was prepared starting from Cs[12-Et3SiC≡C-closo-1-CB11H11] (Cs1c) via salts of the anions [1-HO(O)C-12-HC≡C-closo-1-CB11H10](-) (2b) and [1-H2N(O)C-12-HC≡C-closo-1-CB11H10](-) (3b). In a similar reaction sequence [Et4N][1-CN-12-HC≡C-closo-1-CB11H10] ([Et4N]7b) was obtained from Cs[1-H2N-12-HC≡C-closo-1-CB11H10] (Cs5b) by formamidation to yield [Et4N][1-H(O)CHN-12-HC≡C-closo-1-CB11H10] ([Et4N]6b) and successive dehydration. In addition, the synthesis of the isonitrile [Et4N][1-CN-closo-1-CB11H11] ([Et4N]7a) is presented. The {closo-1-CB11} derivatives were characterized by multinuclear NMR as well as vibrational spectroscopy, mass spectrometry, and elemental analysis. The crystal structures of [Et4N][1-HO(O)C-12-HC≡C-closo-1-CB11H10] ([Et4N]2b), [Et4N][1-H2N(O)C-12-HC≡C-closo-1-CB11H10] ([Et4N]3b), [Et4N][1-NC-12-HC≡C-closo-1-CB11H10] ([Et4N]4b), [Et4N][1-H(O)CHN-12-HC≡C-closo-1-CB11H10] ([Et4N]6b), [Et4N][1-CN-12-HC≡C-closo-1-CB11H10] ([Et4N]7b), and K[1-H(O)CHN-closo-1-CB11H11] ([Et4N]6a) were determined. The transmission of electronic effects through the carba-closo-dodecaboron cage was studied based on (13)C NMR spectroscopic data, by results derived from density functional theory calculations, and by a comparison to the data of related benzene and bicyclo[2.2.2]octane derivatives.
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Affiliation(s)
- Michael Hailmann
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg , Am Hubland, 97074 Würzburg, Germany
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Douvris C, Michl J. Update 1 of:Chemistry of the Carba-closo-dodecaborate(−) Anion, CB11H12–. Chem Rev 2014; 113:PR179-233. [PMID: 23944158 DOI: 10.1021/cr400059k] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christos Douvris
- Institute of Organic Chemistry and Biochemistry, Academy of Science of the Czech Republic, 16610 Prague, Czech Republic
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry, Academy of Science of the Czech Republic, 16610 Prague, Czech Republic
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
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Hailmann M, Herkert L, Himmelspach A, Finze M. Difunctionalized {closo-1-CB11} Clusters: 1- and 2-Amino-12-ethynylcarba-closo-dodecaborates. Chemistry 2013; 19:15745-58. [DOI: 10.1002/chem.201302931] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Indexed: 11/07/2022]
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Wütz T, Fleischhauer S, Wesemann L. B–N bond formation at stanna-closo-dodecaborate. Dalton Trans 2013; 42:753-8. [DOI: 10.1039/c2dt31749d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Konieczka SZ, Himmelspach A, Hailmann M, Finze M. Synthesis, Characterization, and Selected Properties of 7- and 12-Ammoniocarba-closo-dodecaboranes. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200969] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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11
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Finze M, Reiss GJ. Trimethyl-sulfonium 1-amino-6-fluoro-2,3,4,5,7,8,9,10,11,12-decaiodo-1-carba-closo-dodeca-borate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o640. [PMID: 22412544 PMCID: PMC3295433 DOI: 10.1107/s1600536812004424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Accepted: 02/02/2012] [Indexed: 11/24/2022]
Abstract
In the asymmetric unit of the title salt, C3H9S+·CH2B11FI10N− or (CH3)3S[1-H2N-6-F-closo-1-CB11I10], both ions lie in general positions. The anion is perfectly ordered and so the positions of the C—NH2 vertex and the fluorine substituent are clearly assigned. The relatively short C—N bond length may be interpreted in terms of a very electron deficient {closo-1-CB11} cluster.
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Himmelspach A, Reiss GJ, Finze M. 2-Aza-niumylcarba-closo-dodeca-borate ethanol monosolvate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o704. [PMID: 21522448 PMCID: PMC3051930 DOI: 10.1107/s1600536811006222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 02/18/2011] [Indexed: 05/26/2023]
Abstract
Two formula units of the title compound, 2-H3N-closo-1-CB11H11·CH3CH2OH or CH14B11N·C2H5OH, form a ring motif of R42(8) type in the solid state that surrounds a crystallographic center of symmetry. The ring motif is a result of N—H⋯O hydrogen bonds. In contrast to many structures of {closo-1-CB11} clusters, the assignment of the position of the cluster C atom in the structure of the title compound is unambigious. The relatively long B—N bond length [1.5396 (10) Å] documents the absence of any B—N π-interaction in the title compound although this was observed for a related 2-aminocarba-closo-dodecaborate.
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Affiliation(s)
- Alexander Himmelspach
- Institut für Anorganische Chemie und Strukturchemie, Lehrstuhl II: Material- und Strukturforschung, Heinrich-Heine-Universität Düsseldorf, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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Finze M, Sprenger J. 1-Amino-2-fluoromonocarba-closo-dodecaborates: K[1-H2N-2-F-closo-1-CB11H10] and [Et4N][1-H2N-2-F-closo-1-CB11I10]. Z Anorg Allg Chem 2010. [DOI: 10.1002/zaac.201000096] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Ethynylmonocarba-closo-dodecaborates: M[12-HCC-closo-1-CB11H11] and M[7,12-(HCC)2-closo-1-CB11H10] (M=Cs+, [Et4N]+). J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2010.02.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Ringstrand B, Kaszynski P, Young VG, Janousek Z. Anionic amino acid [closo-1-CB9H8-1-COO-10-NH3]- and dinitrogen acid [closo-1-CB9H8-1-COOH-10-N2] as key precursors to advanced materials: synthesis and reactivity. Inorg Chem 2010; 49:1166-79. [PMID: 20043626 DOI: 10.1021/ic9021323] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Amino acid [closo-1-CB(9)H(8)-1-COO-10-NH(3)](-) (4) was prepared by amination of iodo acid [closo-1-CB(9)H(8)-1-COOH-10-I](-) (1) with LiHMDS in a practical and reproducible manner. The apparent dissociation constants, pK(2) = 5.6 and pK(1) > 11, were measured for 4[NMe(4)] in 50% aq. EtOH. Diazotization of 4 with NO(+)PF(6)(-) under mildly basic conditions afforded stable dinitrogen acid [closo-1-CB(9)H(8)-1-COOH-10-N(2)] (5). Activation parameters (DeltaH(++) = 33.9 +/- 1.4 kcal mol(-1) and DeltaS(++) = 10 +/- 3.5 cal mol(-1) K(-1)) for thermolysis of its methyl ester [closo-1-CB(9)H(8)-1-COOMe-10-N(2)] (11) in PhCN were established, and the heterolysis of the B-N bond is believed to be the rate-determining step. Electrochemical analysis showed a partially reversible reduction process for 11 (E(1/2)(red) = -1.03 V) and 5(-) (E(1/2)(red) = -1.21 V), which are more cathodic than reduction of [closo-1-CB(9)H(9)-1-N(2)] (17). The dinitrogen acid 5 was reacted with pyridine and N,N-dimethylthioformamide, to form pyridine acid 6 and protected mercapto acid 7, respectively, through a boronium ylide intermediate 18. Compound 7 was converted to sulfonium acid 8. The molecular and crystal structures for 5 [C(2)H(9)B(9)N(2)O(2) monoclinic, P2(1)/n, a = 7.022(2) A, b = 11.389(4) A, c = 12.815(4) A, beta = 96.212(5) degrees ; V = 1018.8(6) A(3), Z = 4,], 6 [C(7)H(14)B(9)NO(2), monoclinic, P2(1)/n, a = 14.275(4) A, b = 12.184(3) A, c = 30.538(8) A, beta = 95.377(4) degrees ; V = 5288(3) A(3), Z = 16], and 8 [C(7)H(19)B(9)O(2)S, monoclinic, P2(1)/c, a = 15.988(5) A, b = 19.377(6) A, c = 9.655(3) A, beta = 98.348(5) degrees; V = 2959.4(16) A(3), Z = 8] were determined by X-ray crystallography and compared with results of density functional theory (DFT) and MP2 calculations. Electronic structures of 5, 6, and related species were elucidated with electronic spectroscopy and assessed computationally at the B3LYP/6-31G(d,p), MP2/6-31G(d,p), and ZINDO//MP2 levels of theory.
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Affiliation(s)
- Bryan Ringstrand
- Organic Materials Research Group, Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA
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