1
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Bernhardt E, Slabon A. Thallium-Fluorides Revisited: Crystal Chemistry of TlHF 2, Tl 2[MF 6]·2TlF, and Tl 2[MF 6]·TlCl (M = Si and Ge). Inorg Chem 2024; 63:16194-16205. [PMID: 39167460 DOI: 10.1021/acs.inorgchem.4c02001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Although the formation of thallium hydrogen fluorides TlHxFx+1 (x = 1, 1.5, 2, 3, 5, 6.5, and 7) from TlF and HF was reported in the 1970s, little is known about the corresponding crystal structures. To shed light on the crystal chemistry of the thallium fluorides, we reinvestigated the structure of α-TlHF2, which was obtained by crystallization of TlF from 50% HF at room temperature. We disclose that β-TlHF2 is isostructural with α-MHF2 (M = K, Rb, and Cs), γ-TlHF2 is isostructural with β-MHF2 (M = K and Rb), whereas α-TlHF2 crystallizes in an unusual structure type. During the reaction of TlHF2 with the glass of the microscope slide, crystals of the previously unknown compound Tl2[SiF6]·2TlF were formed. We disclose that the related Tl2[GeF6]·2TlF can be obtained by the crystallization of stoichiometric amounts of Tl2[GeF6] with TlF from water at room temperature. The crystal structures of α-TlHF2, Tl2[SiF6]·2TlF, Tl2[SiF6]·TlCl, Tl2[GeF6]·2TlF, Tl2[GeF6]·TlCl, and Tl2[GeF6] were determined by single-crystal X-ray diffraction analysis. The crystal structures of α-TlF and Tl2[SiF6]·xTlF (x = 0, 1) were redetermined at low temperatures.
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Affiliation(s)
- Eduard Bernhardt
- Chair of Inorganic Chemistry, University of Wuppertal, Gaußstr. 20, Wuppertal D-42119, Germany
| | - Adam Slabon
- Chair of Inorganic Chemistry, University of Wuppertal, Gaußstr. 20, Wuppertal D-42119, Germany
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2
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Bai W, Zhang JX, Fan T, Tse SKS, Shou W, Sung HHY, Williams ID, Lin Z, Jia G. Syntheses and Structures of Ruthenium Complexes Containing a Ru-H-Tl Three-Center-Two-Electron Bond. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Wei Bai
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Jing-Xuan Zhang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Ting Fan
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Sunny Kai San Tse
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Wangge Shou
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Herman H. Y. Sung
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Ian D. Williams
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Zhenyang Lin
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Guochen Jia
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
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3
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Bai W, Zhang JX, Fan T, Tse SKS, Shou W, Sung HHY, Williams ID, Lin Z, Jia G. Syntheses and Structures of Ruthenium Complexes Containing a Ru-H-Tl Three-Center-Two-Electron Bond. Angew Chem Int Ed Engl 2018; 57:12874-12879. [DOI: 10.1002/anie.201807174] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/28/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Wei Bai
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Jing-Xuan Zhang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Ting Fan
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Sunny Kai San Tse
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Wangge Shou
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Herman H. Y. Sung
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Ian D. Williams
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Zhenyang Lin
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
| | - Guochen Jia
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong
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4
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Inverse coordination – An emerging new chemical concept. II. Halogens as coordination centers. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.08.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Baumgarth H, Meier G, Braun T, Braun‐Cula B. Rhodium and Iridium Fluorido and Bifluorido Complexes Derived from Peroxido Precursors. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600682] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hanna Baumgarth
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Gregor Meier
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Thomas Braun
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
| | - Beatrice Braun‐Cula
- Humboldt‐Universität zu BerlinDepartment of ChemistryBrook‐Taylor‐Straße 212489BerlinGermany
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6
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Jordan AJ, Lalic G, Sadighi JP. Coinage Metal Hydrides: Synthesis, Characterization, and Reactivity. Chem Rev 2016; 116:8318-72. [PMID: 27454444 DOI: 10.1021/acs.chemrev.6b00366] [Citation(s) in RCA: 295] [Impact Index Per Article: 36.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Hydride complexes of copper, silver, and gold encompass a broad array of structures, and their distinctive reactivity has enabled dramatic recent advances in synthesis and catalysis. This Review summarizes the synthesis, characterization, and key stoichiometric reactions of isolable or observable coinage metal hydrides. It discusses catalytic processes in which coinage metal hydrides are known or probable intermediates, and presents mechanistic studies of selected catalytic reactions. The purpose of this Review is to convey how developments in coinage metal hydride chemistry have led to new organic transformations, and how developments in catalysis have in turn inspired the synthesis of reactive new complexes.
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Affiliation(s)
- Abraham J Jordan
- School of Chemistry & Biochemistry, Georgia Institute of Technology , 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Gojko Lalic
- Department of Chemistry, University of Washington , Seattle, Washington 98195, United States
| | - Joseph P Sadighi
- School of Chemistry & Biochemistry, Georgia Institute of Technology , 901 Atlantic Drive NW, Atlanta, Georgia 30332, United States
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7
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Tate BK, Nguyen JT, Bacsa J, Sadighi JP. Heterolysis of Dihydrogen by Silver Alkoxides and Fluorides. Chemistry 2015; 21:10160-9. [DOI: 10.1002/chem.201500870] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Indexed: 01/21/2023]
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8
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Truscott BJ, Nahra F, Slawin AMZ, Cordes DB, Nolan SP. Fluoride, bifluoride and trifluoromethyl complexes of iridium(i) and rhodium(i). Chem Commun (Camb) 2015; 51:62-5. [DOI: 10.1039/c4cc07772e] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
New methods for the preparation of a range of NHC-based Ir(i) and Rh(i) fluoride, bifluoride and trifluoromethyl complexes are reported.
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Affiliation(s)
| | - Fady Nahra
- EaStCHEM
- School of Chemistry
- University of St. Andrews
- St. Andrews
- UK
| | | | - David B. Cordes
- EaStCHEM
- School of Chemistry
- University of St. Andrews
- St. Andrews
- UK
| | - Steven P. Nolan
- EaStCHEM
- School of Chemistry
- University of St. Andrews
- St. Andrews
- UK
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9
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Bramananthan N, Carmona M, Lowe JP, Mahon MF, Poulten RC, Whittlesey MK. Rh–FHF and Rh–F Complexes Containing Small N-Alkyl Substituted Six-Membered Ring N-Heterocyclic Carbenes. Organometallics 2014. [DOI: 10.1021/om500122e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Nicola Bramananthan
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K
| | - María Carmona
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K
| | - John P. Lowe
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K
| | - Mary F. Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K
| | - Rebecca C. Poulten
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2
7AY, U.K
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10
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Zámostná L, Ahrens M, Braun T. Catalytic hydrodefluorination of fluoroaromatics with silanes as hydrogen source at a binuclear rhodium complex: Characterization of key intermediates. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.05.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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11
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Segarra C, Mas-Marzá E, Lowe JP, Mahon MF, Poulten RC, Whittlesey MK. Ring-Expanded N-Heterocyclic Carbene Complexes of Rhodium with Bifluoride, Fluoride, and Fluoroaryl Ligands. Organometallics 2012. [DOI: 10.1021/om300984v] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Candela Segarra
- Department of Chemistry, and ‡X-ray Crystallographic Unit, University of Bath, Claverton Down,
Bath BA2 7AY, U.K
| | - Elena Mas-Marzá
- Department of Chemistry, and ‡X-ray Crystallographic Unit, University of Bath, Claverton Down,
Bath BA2 7AY, U.K
| | - John P. Lowe
- Department of Chemistry, and ‡X-ray Crystallographic Unit, University of Bath, Claverton Down,
Bath BA2 7AY, U.K
| | - Mary F. Mahon
- Department of Chemistry, and ‡X-ray Crystallographic Unit, University of Bath, Claverton Down,
Bath BA2 7AY, U.K
| | - Rebecca C. Poulten
- Department of Chemistry, and ‡X-ray Crystallographic Unit, University of Bath, Claverton Down,
Bath BA2 7AY, U.K
| | - Michael K. Whittlesey
- Department of Chemistry, and ‡X-ray Crystallographic Unit, University of Bath, Claverton Down,
Bath BA2 7AY, U.K
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12
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Schotes C, Althaus M, Aardoom R, Mezzetti A. Asymmetric Diels-Alder and Ficini reactions with alkylidene β-ketoesters catalyzed by chiral ruthenium PNNP complexes: mechanistic insight. J Am Chem Soc 2012; 134:1331-43. [PMID: 22191539 DOI: 10.1021/ja210372u] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydride abstraction from the β-position of the enolato ligand of the previously reported complex [Ru(3a-H)(PNNP)]PF(6) (5a; 3a-H is the enolate of 2-tert-butoxycarbonylcyclopentanone) with (Ph(3)C)PF(6) gives the dicationic complex [Ru(6a)(PNNP)](2+) (7a) as a single diastereoisomer, which contains the unsaturated β-ketoester 2-tert-butoxycarbonyl-2-cyclopenten-1-one (6a) as a chelating ligand. The methyl analogue 2-methoxycarbonylcyclopentanone (3b) gives [Ru(3b-H)(PNNP)]PF(6) as a mixture of noninterconverting diastereoisomers (ester group of 3b trans to P, 5b; or to N, 5c), which were separated by column chromatography. Hydride abstraction from 5b (or 5c) yields diastereomerically pure [Ru(6b)(PNNP)](2+) (7b or 7c). Complexes 7b and 7c do not interconvert at room temperature in CD(2)Cl(2) and form opposite enantiomers of the Diels-Alder adduct upon reaction with Dane's diene (1 equiv). X-ray studies of 7a, 5b, and 5c give insight into the origin of enantioselection and the sense of asymmetric induction in the previously reported asymmetric Diels-Alder and Ficini cycloaddition reactions with 2,3-disubstituted butadienes and ynamides, respectively. Stoichiometric reactions (substrate coordination, cycloaddition, and product displacement) between [Ru(OEt(2))(2)(PNNP)](2+) (2), 6b (or 6a), and Dane's diene (15, to give estrone derivatives) or N-benzyl-N-(cyclohexylethynyl)-4-methylbenzenesulfonamide (17, to give cyclobutenamides) suggest that product displacement from the catalyst is turnover limiting.
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Affiliation(s)
- Christoph Schotes
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
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13
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Kläring P, Jungton AK, Braun T, Müller C. Synthesis, Structure and Reactivity of Iridium Hydrido Fluorido Complexes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100917] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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Vicente J, Shenoy RV, Martínez-Viviente E, Jones PG. Synthesis of Pd3Tl and Pd6Tl2 complexes based on a trinuclear aryl-palladium(II) complex acting as a metallaligand toward thallium(I) through Tl-arene and Tl-I bonds. Inorg Chem 2011; 50:7189-94. [PMID: 21699175 DOI: 10.1021/ic2007793] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The metallaligand [(PdIL(2))(3)(C(6)Me(3)-1,3,5)] (L(2) = 4,4'-di-tert-butyl-2-2'-bipyridine = tbbpy) reacts with TlOTf to afford the complex [{(PdIL(2))(3)C(6)Me(3)-1,3,5}Tl]OTf, which exists in the solid state as a 2:1 mixture of monomer and dimer, both showing Tl(I)-I and Tl(I)-η(6)-mesitylene bonds. In solution, only the monomer is observed. Heating of toluene solutions of [(PdIL(2))(3)(C(6)Me(3)-1,3,5)] affords the dinuclear complex [(PdIL(2))(2)(C(6)HMe(3)-1,3,5)].
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Affiliation(s)
- José Vicente
- Grupo de Química Organometálica, Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, E-30071, Murcia, Spain.
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15
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Schotes C, Ranocchiari M, Mezzetti A. Aqua and Diethyl Ether PNNP Complexes of Ruthenium(II): Structure and Solution Behavior. Organometallics 2011. [DOI: 10.1021/om200289x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christoph Schotes
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Marco Ranocchiari
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Antonio Mezzetti
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
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16
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Ishizuka T, Sawaki T, Miyazaki S, Kawano M, Shiota Y, Yoshizawa K, Fukuzumi S, Kojima T. Mechanistic Insights into Photochromic Behavior of a Ruthenium(II)-Pterin Complex. Chemistry 2011; 17:6652-62. [DOI: 10.1002/chem.201003522] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Indexed: 11/06/2022]
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17
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Coleman KS, Fawcett J, Harding DAJ, Hope EG, Singh K, Solan GA. Routes to Ruthenium-Fluoro Cations of the Type [RuL2(CO)nF]+ (n = 2,3; L = PR3, NHC): A Play-Off between Solvent, L and Weakly Coordinating Anion. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000410] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Furuya T, Benitez D, Tkatchouk E, Strom AE, Tang P, Goddard WA, Ritter T. Mechanism of C-F reductive elimination from palladium(IV) fluorides. J Am Chem Soc 2010; 132:3793-807. [PMID: 20196595 PMCID: PMC2852535 DOI: 10.1021/ja909371t] [Citation(s) in RCA: 256] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The first systematic mechanism study of C-F reductive elimination from a transition metal complex is described. C-F bond formation from three different Pd(IV) fluoride complexes was mechanistically evaluated. The experimental data suggest that reductive elimination occurs from cationic Pd(IV) fluoride complexes via a dissociative mechanism. The ancillary pyridyl-sulfonamide ligand plays a crucial role for C-F reductive elimination, likely due to a kappa(3) coordination mode, in which an oxygen atom of the sulfonyl group coordinates to Pd. The pyridyl-sulfonamide can support Pd(IV) and has the appropriate geometry and electronic structure to induce reductive elimination.
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Affiliation(s)
- Takeru Furuya
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125
| | - Diego Benitez
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125
| | - Ekaterina Tkatchouk
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125
| | - Alexandra E. Strom
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125
| | - Pingping Tang
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125
| | - William A. Goddard
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138
- Materials and Process Simulation Center, California Institute of Technology, Pasadena, California 91125
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19
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Mezzetti A. Ruthenium complexes with chiral tetradentate PNNP ligands: Asymmetric catalysis from the viewpoint of inorganic chemistry. Dalton Trans 2010; 39:7851-69. [DOI: 10.1039/c0dt00119h] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Liu S, Peloso R, Pattacini R, Braunstein P. Electrophilic activation and the formation of an unusual Tl+/Cr3+ tetranuclear ion-complex adduct. Dalton Trans 2010; 39:7881-3. [DOI: 10.1039/c0dt00810a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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21
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Reade SP, Acton AL, Mahon MF, Martin TA, Whittlesey MK. Synthesis and Reactivity of Ru(NHC)(dppp)(CO)H2and Ru(NHC)(dppp)(CO)HF Complexes: C-H and C-F Activation. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200801105] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Affiliation(s)
- Vladimir V. Grushin
- Central Research & Development, E. I. DuPont de Nemours & Co., Inc., Experimental Station, Wilmington, Delaware 19880
| | - William J. Marshall
- Central Research & Development, E. I. DuPont de Nemours & Co., Inc., Experimental Station, Wilmington, Delaware 19880
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23
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Acidic Ruthenium PNNP Complexes of Non-enolized 1,3-Dicarbonyl Compounds as Catalysts for Asymmetric Michael Addition. Organometallics 2008. [DOI: 10.1021/om800197y] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Forniés J, Fortuño C, Ibáñez S, Martín A. Halide Addition/Abstraction in Phosphido Derivatives: Isolation of the Thallium and Silver Intermediates. Inorg Chem 2008; 47:5978-87. [DOI: 10.1021/ic800294c] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juan Forniés
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Consuelo Fortuño
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Susana Ibáñez
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
| | - Antonio Martín
- Departamento de Química Inorgánica, Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-C.S.I.C., E-50009 Zaragoza, Spain
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25
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Paredes P, Díez J, Gamasa MP. Synthesis of Enantiopure Iridium(I) and Iridium(III) Pybox Complexes and Their Application in the Asymmetric Transfer Hydrogenation of Ketones. Organometallics 2008. [DOI: 10.1021/om7011997] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paloma Paredes
- Instituto Universitario de Química Organometálica “Enrique Moles” (Unidad Asociada al CSIC), Departamento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, 33071 Oviedo, Spain
| | - Josefina Díez
- Instituto Universitario de Química Organometálica “Enrique Moles” (Unidad Asociada al CSIC), Departamento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, 33071 Oviedo, Spain
| | - M. Pilar Gamasa
- Instituto Universitario de Química Organometálica “Enrique Moles” (Unidad Asociada al CSIC), Departamento de Química Orgánica e Inorgánica, Facultad de Química, Universidad de Oviedo, 33071 Oviedo, Spain
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Barral MC, Gallo T, Herrero S, Jiménez-Aparicio R, Torres MR, Urbanos FA. The First Open-Paddlewheel Structures in Diruthenium Chemistry: Examples of Intermediate Magnetic Behaviour between Low and High Spin in Ru25+ Species. Chemistry 2007; 13:10088-95. [PMID: 17907129 DOI: 10.1002/chem.200700494] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The reaction of [Ru(2)Cl(O(2)CMe)(DPhF)(3)] (DPhF=N,N'-diphenylformamidinate) with aqueous HCl leads to the substitution of the acetate ligand to give the complex [Ru(2)Cl(2)(DPhF)(3)] (1). Similar reaction of [Ru(2)(O(2)CMe)(DPhF)(3)(H(2)O)]BF(4) with aqueous HBr or HI produces [Ru(2)Br(2)(DPhF)(3)] (2), and [Ru(2)I(2)(DPhF)(3)] (3), respectively. The reaction of 1 with AgBF(4) to form the highly unsaturated unit [Ru(2)(DPhF)(3)](2+), which is isolated as [Ru(2)(BF(4))(DPhF)(3)(H(2)O)]BF(4) (4), and [Ru(2)(MeCN)(2)(DPhF)(3)](BF(4))(2) (5), is also reported. The use of AgNO(3) instead of AgBF(4) leads to [Ru(2)(NO(3))(2)(DPhF)(3)] (6). The magnetic behaviour of complexes 1-4 and 6 is intermediate between high- and low-spin configurations. A relationship between the magnetic behaviour and the visible-near-infrared (Vis-NIR) spectra is apparent. In addition, the crystal structure determinations of 2, 4.THF, and 6, have been carried out. Complexes 1-3, 5 and 6 are the first examples of open-paddlewheel structures in diruthenium chemistry. The BF(4) (-) bridging the metal centres in 4THF is activated and forms very short Ru-F bonds.
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Affiliation(s)
- M Carmen Barral
- Departamento de Química Inorgánica, Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Ciudad Universitaria, 28040 Madrid, Spain
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Reade SP, Nama D, Mahon MF, Pregosin PS, Whittlesey MK. Synthesis and Reactivity of Ru(PPh3)3(CO)HF and the N-Heterocyclic Carbene Derivatives Ru(NHC)(PPh3)2(CO)HF. Organometallics 2007. [DOI: 10.1021/om070164p] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steven P. Reade
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Laboratory of Inorganic Chemistry, ETHZ, Honggerberg, CH-8093 Zurich, Switzerland
| | - Devendrababu Nama
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Laboratory of Inorganic Chemistry, ETHZ, Honggerberg, CH-8093 Zurich, Switzerland
| | - Mary F. Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Laboratory of Inorganic Chemistry, ETHZ, Honggerberg, CH-8093 Zurich, Switzerland
| | - Paul S. Pregosin
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Laboratory of Inorganic Chemistry, ETHZ, Honggerberg, CH-8093 Zurich, Switzerland
| | - Michael K. Whittlesey
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K., and Laboratory of Inorganic Chemistry, ETHZ, Honggerberg, CH-8093 Zurich, Switzerland
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28
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Caskey SR, Stewart MH, Ahn YJ, Johnson MJA, Rowsell JLC, Kampf JW. Synthesis, Structure, and Reactivity of Four-, Five-, and Six-Coordinate Ruthenium Carbyne Complexes. Organometallics 2007. [DOI: 10.1021/om061192v] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen R. Caskey
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, and Department of Chemistry & Biochemistry, Oberlin College, 119 Woodland Street, Oberlin, Ohio 44074-1097
| | - Michael H. Stewart
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, and Department of Chemistry & Biochemistry, Oberlin College, 119 Woodland Street, Oberlin, Ohio 44074-1097
| | - Yi Joon Ahn
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, and Department of Chemistry & Biochemistry, Oberlin College, 119 Woodland Street, Oberlin, Ohio 44074-1097
| | - Marc J. A. Johnson
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, and Department of Chemistry & Biochemistry, Oberlin College, 119 Woodland Street, Oberlin, Ohio 44074-1097
| | - Jesse L. C. Rowsell
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, and Department of Chemistry & Biochemistry, Oberlin College, 119 Woodland Street, Oberlin, Ohio 44074-1097
| | - Jeff W. Kampf
- Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, Michigan 48109-1055, and Department of Chemistry & Biochemistry, Oberlin College, 119 Woodland Street, Oberlin, Ohio 44074-1097
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29
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Badr IHA, Meyerhoff ME. Fluoride-selective optical sensor based on aluminum(III)-octaethylporphyrin in thin polymeric film: further characterization and practical application. Anal Chem 2006; 77:6719-28. [PMID: 16223262 PMCID: PMC2546528 DOI: 10.1021/ac050987t] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
More detailed analytical studies of a new fluoride-selective optical sensor based on the use of aluminum(III)-octaethylporphyrin and a lipophilic pH indicator (4',5'-dibromofluorescein octadecyl ester; ETH-7075) within a thin plasticized poly(vinyl chloride) film are reported. The sensor exhibits extraordinary optical selectivity for fluoride over a wide range of other anions, including anions with far more positive free energies of hydration (e.g., perchlorate, thiocyanate, nitrate, etc.). UV-visible spectrophotometric studies of the sensing films indicate that fluoride interacts with the Al(III) center of the porphyrin structure, yielding both a change in the Soret band lambda(max) of the porphyrin and a change in the protonation state of the pH indicator within the film. The same change in spectral properties of the metalloporphyrin occurs in the absence of added pH indicator or with added tetraphenylborate derivative anionic sites, but optical responses to fluoride in these cases are shown to be irreversible. The presence of the pH indicator and the simultaneous fluoride/proton coextraction equilibrium chemistry is shown to greatly enhance the reversibility of fluoride binding to the Al(III) porphyrin. Optical response toward fluoride can be observed in the range of 0.1 microM-1.6 mM. Optical selectivity coefficients of <10(-6) for common anions (e.g., sulfate, chloride, nitrate, etc.) and <10(-4) for perchlorate and thiocyanate are obtained. Measurements of fluoride in drinking water via the new optical sensor are shown to correlate well with values obtained for the same samples using a classical LaF3-based fluoride ion-selective electrode method.
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Affiliation(s)
| | - Mark E. Meyerhoff
- To whom correspondence should be addressed at E-mail: ; phone: (734) 763-5916; fax: (734) 647-4865
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Bonaccorsi C, Santoro F, Gischig S, Mezzetti A. Chiral Dicationic Bis(aqua) Complexes [Ru(OH2)2(PNNP)]2+: The Effect of Double Chloride Abstraction on Asymmetric Cyclopropanation. Organometallics 2006. [DOI: 10.1021/om0510627] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cristina Bonaccorsi
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Francesco Santoro
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Sebastian Gischig
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
| | - Antonio Mezzetti
- Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
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31
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Mitchell-Koch J, Pietrzak M, Malinowska E, Meyerhoff M. Aluminum(III) Porphyrins as Ionophores for Fluoride Selective Polymeric Membrane Electrodes. ELECTROANAL 2006. [DOI: 10.1002/elan.200503450] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Huang D, Renkema KB, Caulton KG. Cleavage of F–C(sp2) bonds by MHR(CO)(PtBu2Me)2 (M=Os and Ru; R=H, CH3 or Aryl): Product dependence on M and R. Polyhedron 2006. [DOI: 10.1016/j.poly.2005.08.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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33
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Steffen A, Sladek MI, Braun T, Neumann B, Stammler HG. Catalytic C−C Coupling Reactions at Nickel by C−F Activation of a Pyrimidine in the Presence of a C−Cl Bond: The Crucial Role of Highly Reactive Fluoro Complexes. Organometallics 2005. [DOI: 10.1021/om050080l] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andreas Steffen
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Marianna I. Sladek
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Thomas Braun
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Beate Neumann
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Hans-Georg Stammler
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
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34
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Wright RJ, Phillips AD, Hino S, Power PP. Synthesis and Reactivity of Dimeric Ar‘TlTlAr‘ and Trimeric (Ar‘ ‘Tl)3(Ar‘, Ar‘ ‘ = Bulky Terphenyl Group) Thallium(I) Derivatives: Tl(I)−Tl(I) Bonding in Species Ligated by Monodentate Ligands. J Am Chem Soc 2005; 127:4794-9. [PMID: 15796545 DOI: 10.1021/ja0432259] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and characterization of three new organothallium(I) compounds are reported. Reaction of (Ar'Li)(2) (Ar' = C(6)H(3)-2,6-(C(6)H(3)-2,6-Pr(i)(2))(2)) and Ar"Li (Ar" = C(6)H(3)-2,6-(C(6)H(3)-2,6-Me(2))(2)) with TlCl in Et(2)O afforded (Ar'Tl)(2) (1) and (Ar' 'Tl)(3) (2). The "dithallene" 1 is the heaviest group 13 dimetallene and features a planar, trans-bent structure with Ar'Tl-Tl = 119.74(14) degrees and Tl-Tl = 3.0936(8) A. Compound 2 is the first structurally characterized neutral, three-membered ring species of formula c-(MR)(3) (M = Al-Tl; R = organo group). The Tl(3) ring has Tl-Tl distances in the range ca. 3.21-3.37 A as well as pyramidal Tl geometries. The Tl-Tl bonds in 1 and 2 are outside the range (2.88-2.97 A) of Tl-Tl single bonds in R(2)TlTlR(2) compounds. The weak Tl-Tl bonding in 1 and 2 leads to their dissociation into Ar'Tl and Ar' 'Tl monomers in hexane. The Ar'Tl monomer behaves as a Lewis base and readily forms a 1:1 donor-acceptor complex with B(C(6)F(5))(3) to give Ar'TlB(C(6)F(5))(3), 3. Adduct 3 features an almost linear thallium C(ipso)-Tl-B angle of 174.358(7) degrees and a Tl-B distance of 2.311(2) A, which indicates strong association. Treatment of 1 with a variety of reagents resulted in no reactions. The lower reactivity of 1 is in accord with the reluctance of Tl(I) to undergo oxidation to Tl(III) due to the unreactive character of the 6s(2) electrons.
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Affiliation(s)
- Robert J Wright
- Department of Chemistry, One Shields Avenue, University of California, Davis, CA 95616, USA
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35
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Yahav A, Goldberg I, Vigalok A. Difluoro Complexes of Platinum(II) and -(IV) with Monodentate Phosphine Ligands: An Exceptional Stability of d6Octahedral Organometallic Fluorides. Inorg Chem 2005; 44:1547-53. [PMID: 15732997 DOI: 10.1021/ic0488177] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Complexes (R3P)2PtF2 were prepared by reaction of the corresponding diiodo precursors with AgF in dichloromethane. The intermediate formation of trans- and cis-(R3P)2Pt(I)F was also observed. All fluoro complexes demonstrate a strong preference for the cis-configuration (R = Ph or Et) unless a bulky phosphine ligand is used (R = i-Pr), in which case the trans complex was observed. The Pt(IV) difluoro compounds (R3P)2Ar2PtF2 were obtained by reacting the Pt(II) diaryl precursors with XeF2. The fluoro ligands are located in the trans-position relative to the aryl groups in the overall octahedral environment. The representative Pt(II) and Pt(IV) difluoro complexes were characterized by X-ray crystallography. All fluoro compounds react rapidly with chlorotrimethylsilane to give the corresponding chloro complexes. The Pt(IV) difluorides are remarkably stable in the C-C reductive elimination reaction, relative to their dichloro analogs which reductively eliminate diaryl within several hours at 45 degrees C in N-methylpyrrolidone. It was found that phosphine dissociation from the octahedral Pt(IV) complex is essential for the reductive elimination reaction to take place, the difluoro complex being kinetically stable even at 60 degrees C.
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Affiliation(s)
- Anette Yahav
- School of Chemistry, The Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
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36
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Braun T, Steffen A, Schorlemer V, Neumann B, Stammler HG. Routes to unique palladium A-frame complexes with a bridging fluoro-ligand. Dalton Trans 2005:3331-6. [PMID: 16193151 DOI: 10.1039/b509032f] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Treatment of a toluene solution of [PdMe(2)(Cy(2)PCH(2)PCy(2))](1) with pentafluoropyridine in the presence of traces of water affords the generation of the A-frame complexes [(PdMe)(2){mu-kappa(2)(P,P)Cy(2)PCH(2)PCy(2)}(2)(mu-F)][SiMeF(4)]() and [(PdMe)(2){mu-kappa(2)(P,P)Cy(2)PCH(2)PCy(2)}(2)(mu-F)][OC(5)NF(4)](2b). If the reaction is performed in an NMR tube equipped with a PFA inliner, complex 2b is produced, only. Treatment of 1 with pentafluoropyridine in the presence of an excess water yields the pyridyloxy complex [PdMe(OC(5)NF(4))(Cy(2)PCH(2)PCy(2))](3). Compound [(PdMe)(2){mu-kappa(2)(P,P)Cy(2)PCH(2)PCy(2)}(2)(mu-F)][FHF](2c) bearing a bifluoride anion instead of SiMeF(4)(-) or OC(5)NF(4)(-) can be generated by reaction of 1 with substoichiometric amounts of Et(3)N.3HF. The analogous complex [(PdMe)(2){mu-kappa(2)(P,P)Ph(2)PCH(2)PPh(2)}(2)(mu-F)][FHF] (5c) has been synthesized by addition of Ph(2)PCH(2)PPh(2) to a solution of [PdMe(2)(Me(2)NCH(2)CH(2)NMe(2))](4) in THF and subsequent treatment of the reaction mixture with Et(3)N.3HF. The structure of the A-frame complex 5c has been determined by X-ray crystallography.
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Affiliation(s)
- Thomas Braun
- Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany.
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37
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Jasim NA, Perutz RN, Whitwood AC, Braun T, Izundu J, Neumann B, Rothfeld S, Stammler HG. Contrasting Reactivity of Fluoropyridines at Palladium and Platinum: C−F Oxidative Addition at Palladium, P−C and C−F Activation at Platinum. Organometallics 2004. [DOI: 10.1021/om049448p] [Citation(s) in RCA: 136] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Naseralla A. Jasim
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Robin N. Perutz
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Adrian C. Whitwood
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Thomas Braun
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Joseph Izundu
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Beate Neumann
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Sascha Rothfeld
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
| | - Hans-Georg Stammler
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, U.K., and Fakultät für Chemie, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
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