1
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Daly S, Weske S, Mravak A, Krstić M, Kulesza A, Antoine R, Bonačić-Koutecký V, Dugourd P, Koszinowski K, O’Hair RAJ. Phenyl argentate aggregates [AgnPhn+1]− (n = 2–8): Models for the self-assembly of atom-precise polynuclear organometallics. J Chem Phys 2021; 154:224301. [DOI: 10.1063/5.0052697] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- Steven Daly
- Institut Lumière Matière, Université Claude Bernard Lyon 1, CNRS UMR, 5306 Lyon, France
| | - Sebastian Weske
- Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Göttingen, Germany
| | - Antonija Mravak
- Center of Excellence for Science and Technology-Integration of Mediterranean Region (STIM), Faculty of Science, University of Split, Ruđera Boškovića 33, Split 21000, Croatia
| | - Marjan Krstić
- Center of Excellence for Science and Technology-Integration of Mediterranean Region (STIM), Faculty of Science, University of Split, Ruđera Boškovića 33, Split 21000, Croatia
| | - Alexander Kulesza
- Institut Lumière Matière, Université Claude Bernard Lyon 1, CNRS UMR, 5306 Lyon, France
| | - Rodolphe Antoine
- Institut Lumière Matière, Université Claude Bernard Lyon 1, CNRS UMR, 5306 Lyon, France
| | - Vlasta Bonačić-Koutecký
- Center of Excellence for Science and Technology-Integration of Mediterranean Region (STIM), Faculty of Science, University of Split, Ruđera Boškovića 33, Split 21000, Croatia
- Interdisciplinary Center for Advanced Science and Technology (ICAST) at University of Split, Meštrovićevo šetalište 45, Split 21000, Croatia
- Chemistry Department Humboldt, University of Berlin, Brook-Taylor-Straße 2, Berlin 12489, Germany
| | - Philippe Dugourd
- Institut Lumière Matière, Université Claude Bernard Lyon 1, CNRS UMR, 5306 Lyon, France
| | - Konrad Koszinowski
- Institute of Organic and Biomolecular Chemistry, Georg-August-University Göttingen, Göttingen, Germany
| | - Richard A. J. O’Hair
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Rd., Parkville, Victoria 3010, Australia
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2
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Auth T, Koszinowski K, O’Hair RAJ. Dissecting Transmetalation Reactions at the Molecular Level: Phenyl Transfer in Metal Borate Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00521] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Thomas Auth
- Insitut für Organische und Biomolekulare Chemie, Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Konrad Koszinowski
- Insitut für Organische und Biomolekulare Chemie, Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Richard A. J. O’Hair
- Insitut für Organische und Biomolekulare Chemie, Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
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3
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Jin Q, Li J, Ariafard A, Canty AJ, O'Hair RA. Formation and reactions of the 1, 8-naphthyridine (napy) ligated geminally dimetallated phenyl complexes [(napy)Cu 2(Ph)] +, [(napy)Ag 2(Ph)] + and [(napy)CuAg(Ph)] . EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2019; 25:30-43. [PMID: 30773925 DOI: 10.1177/1469066718795959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gas-phase ion trap mass spectrometry experiments and density functional theory calculations have been used to examine the routes to the formation of the 1,8-naphthyridine (napy) ligated geminally dimetallated phenyl complexes [(napy)Cu2(Ph)]+, [(napy)Ag2(Ph)]+ and [(napy)CuAg(Ph)]+ via extrusion of CO2 or SO2 under collision-induced dissociation conditions from their corresponding precursor complexes [(napy)Cu2(O2CPh)]+, [(napy)Ag2(O2CPh)]+, [(napy)CuAg(O2CPh)]+ and [(napy)Cu2(O2SPh)]+, [(napy)Ag2(O2SPh)]+, [(napy)CuAg(O2SPh)]+. Desulfination was found to be more facile than decarboxylation. Density functional theory calculations reveal that extrusion proceeds via two transition states: TS1 enables isomerization of the O, O-bridged benzoate to its O-bound form; TS2 involves extrusion of CO2 or SO2 with the concomitant formation of the organometallic cation and has the highest barrier. Of all the organometallic cations, only [(napy)Cu2(Ph)]+ reacts with water via hydrolysis to give [(napy)Cu2(OH)]+, consistent with density functional theory calculations which show that hydrolysis proceeds via the initial formation of the adduct [(napy)Cu2(Ph)(H2O)]+ which then proceeds via TS3 in which the coordinated H2O is deprotonated by the coordinated phenyl anion to give the product complex [(napy)Cu2(OH)(C6H6)]+, which then loses benzene.
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Affiliation(s)
- Qiuyan Jin
- 1 School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Victoria, Australia
| | - Jiaye Li
- 1 School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Victoria, Australia
| | - Alireza Ariafard
- 2 Department of Chemistry, Faculty of Science, Central Tehran Branch, Islamic Azad University, Shahrak Gharb, Tehran, Iran
| | - Allan J Canty
- 3 School of Physical Sciences, University of Tasmania, Hobart, Tasmania, Australia
| | - Richard Aj O'Hair
- 1 School of Chemistry and Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Victoria, Australia
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4
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Affiliation(s)
- Brandon K. Tate
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Abraham J. Jordan
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - John Bacsa
- X-ray
Crystallography Center, Emory University, Atlanta, Georgia 30322, United States
| | - Joseph P. Sadighi
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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5
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Vikse KL, Zavras A, Thomas TH, Ariafard A, Khairallah GN, Canty AJ, Yates BF, O’Hair RAJ. Prying open a Reactive Site for Allylic Arylation by Phosphine-Ligated Geminally Diaurated Aryl Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00287] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Krista L. Vikse
- ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Athanasios Zavras
- ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Tudor H. Thomas
- ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Alireza Ariafard
- School
of Physical Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
- Department
of Chemistry, Faculty of Science, Central Tehran Branch, Islamic Azad University, Shahrak Gharb, Tehran, Iran
| | - George N. Khairallah
- ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Allan J. Canty
- School
of Physical Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Brian F. Yates
- School
of Physical Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Richard A. J. O’Hair
- ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
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6
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O’Hair RA. Gas-phase studies of metal catalyzed decarboxylative cross-coupling reactions of esters. PURE APPL CHEM 2015. [DOI: 10.1515/pac-2014-1108] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractMetal-catalyzed decarboxylative coupling reactions of esters offer new opportunities for formation of C–C bonds with CO2as the only coproduct. Here I provide an overview of: key solution phase literature; thermochemical considerations for decarboxylation of esters and thermolysis of esters in the absence of a metal catalyst. Results from my laboratory on the use of multistage ion trap mass spectrometry experiments and DFT calculations to probe the gas-phase metal catalyzed decarboxylative cross-coupling reactions of allyl acetate and related esters are then reviewed. These studies have explored the role of the metal carboxylate complex in the gas phase decarboxylative coupling of allyl acetate proceeding via a simple two-step catalytic cycle. In Step 1, an organometallic ion, [CH3ML]+/–(where M is a group 10 or 11 metal and L is an auxillary ligand), is allowed to undergo ion-molecule reactions with allyl acetate to generate 1-butene and the metal acetate ion, [CH3CO2ML]+/–. In Step 2, the metal acetate ion is subjected to collision-induced dissociation to reform the organometallic ion and thereby close the catalytic cycle. DFT calculations have been used to explore the mechanisms of these reactions. The organometallic ions [CH3CuCH3]–, [CH3Cu2]+, [CH3AgCu]+and [CH3M(phen)]+(where M = Ni, Pd and Pt) all undergo C–C bond coupling reactions with allyl acetate (Step 1), although the reaction efficiencies and product branching ratios are highly dependant on the nature of the metal complex. For example, [CH3Ag2]+does not undergo C–C bond coupling. Using DFT calculations, a diverse range of mechanisms have been explored for these C–C bond-coupling reactions including: oxidative-addition, followed by reductive elimination; insertion reactions and SN2-like reactions. Which of these mechanisms operate is dependant on the nature of the metal complex. A wide range of organometallic ions can be formed via decarboxylation (Step 2) although these reactions can be in competition with other fragmentation channels. DFT calculations have located different types of transition states for the formation of [CH3CuCH3]–, [CH3Cu2]+, [CH3AgCu]+and [CH3M(phen)]+(where M = Ni, Pd and Pt). Of the catalysts studied to date, [CH3Cu2]+and [CH3Pd(phen)]+are best at promoting C–C bond formation (Step 1) as well as being regenerated (Step 2). Preliminary results on the reactions of [C6H5M(phen)]+(M = Ni and Pd) with C6H5CO2CH2CH=CH2and C6H5CO2CH2C6H5are described.
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7
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O’Hair RAJ, Rijs NJ. Gas phase studies of the Pesci decarboxylation reaction: synthesis, structure, and unimolecular and bimolecular reactivity of organometallic ions. Acc Chem Res 2015; 48:329-40. [PMID: 25594228 DOI: 10.1021/ar500377u] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
CONSPECTUS: Decarboxylation chemistry has a rich history, and in more recent times, it has been recruited in the quest to develop cheaper, cleaner, and more efficient bond-coupling reactions. Thus, over the past two decades, there has been intense investigation into new metal-catalyzed reactions of carboxylic substrates. Understanding the elementary steps of metal-mediated transformations is at the heart of inventing new reactions and improving the performance of existing ones. Fortunately, during the same time period, there has been a convergence in mass spectrometry (MS) techniques, which allows these catalytic processes to be examined efficiently in the gas phase. Thus, electrospray ionization (ESI) sources have been combined with ion-trap mass spectrometers, which in turn have been modified to either accept radiation from tunable OPO lasers for spectroscopy based structural assignment of ions or to allow the study of ion-molecule reactions (IMR). The resultant "complete" gas-phase chemical laboratories provide a platform to study the elementary steps of metal-catalyzed decarboxylation reactions in exquisite detail. In this Account, we illustrate how the powerful combination of ion trap mass spectrometry experiments and DFT calculations can be systematically used to examine the formation of organometallic ions and their chemical transformations. Specifically, ESI-MS allows the transfer of inorganic carboxylate complexes, [RCO2M(L)n](x), (x = charge) from the condensed to the gas phase. These mass selected ions serve as precursors to organometallic ions [RM(L)n](x) via neutral extrusion of CO2, accessible by slow heating in the ion trap using collision induced dissociation (CID). This approach provides access to an array of organometallic ions with well-defined stoichiometry. In terms of understanding the decarboxylation process, we highlight the role of the metal center (M), the organic group (R), and the auxiliary ligand (L), along with cluster nuclearity, in promoting the formation of the organometallic ion. Where isomeric organometallic ions are generated and normal MS approaches cannot distinguish them, we describe approaches to elucidate the decarboxylation mechanism via determination of their structure. These "unmasked" organometallic ions, [RM(L)n](x), can also be structurally interrogated spectroscopically or via CID. We have thus compared the gas-phase structures and decomposition of several highly reactive and synthetically important organometallic ions for the first time. Perhaps the most significant aspect of this work is the study of bimolecular reactions, which provides experimental information on mechanistically obscure bond-formation and cross-coupling steps and the intrinsic reactivity of ions. We have sought to understand transformations of substrates including acid-base and hydrolysis reactions, along with reactions resulting in C-C bond formation. Our studies also allow a direct comparison of the performance of different metal catalysts in the individual elementary steps associated with protodecarboxylation and decarboxylative alkylation cycles. Electronic structure (DFT and ab initio) and dynamics (RRKM) calculations provide further mechanistic insights into these reactions. The broad implications of this research are that new reactions can be discovered and that the performance of metal catalysts can be evaluated in terms of each of their elementary steps. This has been particularly useful for the study of metal-mediated decarboxylation reactions.
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Affiliation(s)
- Richard A. J. O’Hair
- School of Chemistry, University of Melbourne, Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence in Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Nicole J. Rijs
- School of Chemistry, University of Melbourne, Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence in Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, 10623 Berlin, Germany
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8
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Li J, Khairallah GN, O’Hair RAJ. Dimethylcuprate-Mediated Transformation of Acetate to Dithioacetate. Organometallics 2015. [DOI: 10.1021/om501117p] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jiawei Li
- School
of Chemistry, Bio21
Institute of Molecular Science and Biotechnology, and ARC Centre of Excellence for Free Radical Chemistry
and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - George N. Khairallah
- School
of Chemistry, Bio21
Institute of Molecular Science and Biotechnology, and ARC Centre of Excellence for Free Radical Chemistry
and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Richard A. J. O’Hair
- School
of Chemistry, Bio21
Institute of Molecular Science and Biotechnology, and ARC Centre of Excellence for Free Radical Chemistry
and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
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9
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Li J, Khairallah GN, Steinmetz V, Maitre P, O'Hair RAJ. Copper mediated decyano decarboxylative coupling of cyanoacetate ligands: Pesci versus Lewis acid mechanism. Dalton Trans 2015; 44:9230-40. [DOI: 10.1039/c5dt00942a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combination of gas-phase ion trap multistage mass spectrometry (MSn) experiments and density functional theory (DFT) calculations have been used to examine the mechanisms of the sequential decomposition reactions of copper cyanoacetate anions, [(NCCH2CO2)2Cu]−.
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Affiliation(s)
- Jiawei Li
- School of Chemistry
- University of Melbourne
- Australia
- Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
| | - George N. Khairallah
- School of Chemistry
- University of Melbourne
- Australia
- Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
| | - Vincent Steinmetz
- Laboratoire de Chimie Physique
- UMR8000 CNRS
- Université Paris-Sud
- Orsay
- France
| | - Philippe Maitre
- Laboratoire de Chimie Physique
- UMR8000 CNRS
- Université Paris-Sud
- Orsay
- France
| | - Richard A. J. O'Hair
- School of Chemistry
- University of Melbourne
- Australia
- Bio21 Institute of Molecular Science and Biotechnology
- The University of Melbourne
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10
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Woolley M, Khairallah GN, da Silva G, Donnelly PS, O’Hair RAJ. Direct versus Water-Mediated Protodecarboxylation of Acetic Acid Catalyzed by Group 10 Carboxylates, [(phen)M(O2CCH3)]+. Organometallics 2014. [DOI: 10.1021/om500493w] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew Woolley
- School of Chemistry, ‡Bio21 Institute of Molecular Science
and Biotechnology, §ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, and ∥Department of Chemical and Biomolecular
Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - George N. Khairallah
- School of Chemistry, ‡Bio21 Institute of Molecular Science
and Biotechnology, §ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, and ∥Department of Chemical and Biomolecular
Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Gabriel da Silva
- School of Chemistry, ‡Bio21 Institute of Molecular Science
and Biotechnology, §ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, and ∥Department of Chemical and Biomolecular
Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Paul S. Donnelly
- School of Chemistry, ‡Bio21 Institute of Molecular Science
and Biotechnology, §ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, and ∥Department of Chemical and Biomolecular
Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Richard A. J. O’Hair
- School of Chemistry, ‡Bio21 Institute of Molecular Science
and Biotechnology, §ARC Centre of Excellence
for Free Radical Chemistry and Biotechnology, and ∥Department of Chemical and Biomolecular
Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia
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11
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Woolley MJ, Khairallah GN, da Silva G, Donnelly PS, Yates BF, O’Hair RAJ. Role of the Metal, Ligand, and Alkyl/Aryl Group in the Hydrolysis Reactions of Group 10 Organometallic Cations [(L)M(R)]+. Organometallics 2013. [DOI: 10.1021/om400358q] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Matthew J. Woolley
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, The University of Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science
and Biotechnology, The University of Melbourne, Victoria 3010, Australia
| | - George N. Khairallah
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, The University of Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science
and Biotechnology, The University of Melbourne, Victoria 3010, Australia
| | - Gabriel da Silva
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Victoria 3010, Australia
| | - Paul S. Donnelly
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science
and Biotechnology, The University of Melbourne, Victoria 3010, Australia
| | - Brian F. Yates
- School of Chemistry, University of Tasmania, Private Bag 75 Hobart, Tasmania 7001, Australia
| | - Richard A. J. O’Hair
- School of Chemistry, The University of Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence for Free
Radical Chemistry and Biotechnology, The University of Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science
and Biotechnology, The University of Melbourne, Victoria 3010, Australia
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12
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Jašíková L, Roithová J. Interaction of Gold Acetylides with Gold(I) or Silver(I) Cations. Organometallics 2013. [DOI: 10.1021/om4006774] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lucie Jašíková
- Department
of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
| | - Jana Roithová
- Department
of Organic Chemistry, Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843 Prague 2, Czech Republic
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13
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Al Sharif H, Vikse KL, Khairallah GN, O’Hair RAJ. Catalytic Decarboxylative Coupling of Allyl Acetate: Role of the Metal Centers in the Organometallic Cluster Cations [CH3Cu2]+, [CH3AgCu]+, and [CH3Ag2]+. Organometallics 2013. [DOI: 10.1021/om400712n] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Halah Al Sharif
- School of Chemistry, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence for Free Radical Chemistry
and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Ministry of Higher Education, Saudi Arabia
| | - Krista L. Vikse
- School of Chemistry, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - George N. Khairallah
- School of Chemistry, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Richard A. J. O’Hair
- School of Chemistry, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
- ARC Centre of Excellence for Free Radical Chemistry
and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
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14
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Hansen CS, Kirk BB, Blanksby SJ, O'Hair RAJ, Trevitt AJ. UV photodissociation action spectroscopy of haloanilinium ions in a linear quadrupole ion trap mass spectrometer. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:932-940. [PMID: 23609184 DOI: 10.1007/s13361-013-0615-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Revised: 03/05/2013] [Accepted: 03/10/2013] [Indexed: 06/02/2023]
Abstract
UV-vis photodissociation action spectroscopy is becoming increasingly prevalent because of advances in, and commercial availability of, ion trapping technologies and tunable laser sources. This study outlines in detail an instrumental arrangement, combining a commercial ion-trap mass spectrometer and tunable nanosecond pulsed laser source, for performing fully automated photodissociation action spectroscopy on gas-phase ions. The components of the instrumentation are outlined, including the optical and electronic interfacing, in addition to the control software for automating the experiment and performing online analysis of the spectra. To demonstrate the utility of this ensemble, the photodissociation action spectra of 4-chloroanilinium, 4-bromoanilinium, and 4-iodoanilinium cations are presented and discussed. Multiple photoproducts are detected in each case and the photoproduct yields are followed as a function of laser wavelength. It is shown that the wavelength-dependent partitioning of the halide loss, H loss, and NH3 loss channels can be broadly rationalized in terms of the relative carbon-halide bond dissociation energies and processes of energy redistribution. The photodissociation action spectrum of (phenyl)Ag2 (+) is compared with a literature spectrum as a further benchmark.
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15
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Khairallah GN, Williams CM, Chow S, O'Hair RAJ. sp–sp3Coupling reactions of alkynylsilver cations, RCCAg2+(R = Me and Ph) with allyliodide. Dalton Trans 2013. [DOI: 10.1039/c2dt32143b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Bellina B, Antoine R, Broyer M, Gell L, Sanader Ž, Mitrić R, Bonačić-Koutecký V, Dugourd P. Formation and characterization of thioglycolic acid–silver cluster complexes. Dalton Trans 2013; 42:8328-33. [DOI: 10.1039/c3dt50485a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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17
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Vikse K, Khairallah GN, McIndoe JS, O'Hair RAJ. Fixed-charge phosphine ligands to explore gas-phase coinage metal-mediated decarboxylation reactions. Dalton Trans 2013; 42:6440-9. [DOI: 10.1039/c3dt32285h] [Citation(s) in RCA: 27] [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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18
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Vikse KL, Khairallah GN, O’Hair RAJ. Gas-Phase Unimolecular Reactions of Pallada- and Nickelalactone Anions. Organometallics 2012. [DOI: 10.1021/om300741n] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Krista L. Vikse
- School
of Chemistry and ‡Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne,
Victoria 3010, Australia
| | - George N. Khairallah
- School
of Chemistry and ‡Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne,
Victoria 3010, Australia
| | - Richard A. J. O’Hair
- School
of Chemistry and ‡Bio21 Institute of Molecular Science and Biotechnology, The University of Melbourne, Melbourne,
Victoria 3010, Australia
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19
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Harris BL, Waters T, Khairallah GN, O’Hair RAJ. Gas-Phase Reactions of [VO2(OH)2]− and [V2O5(OH)]− with Methanol: Experiment and Theory. J Phys Chem A 2012; 117:1124-35. [PMID: 22889366 DOI: 10.1021/jp3046142] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin L. Harris
- School
of Chemistry, ‡Bio21 Institute of Molecular Science and Biotechnology, and §ARC Centre of
Excellence for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne,
Victoria 3010, Australia
| | - Tom Waters
- School
of Chemistry, ‡Bio21 Institute of Molecular Science and Biotechnology, and §ARC Centre of
Excellence for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne,
Victoria 3010, Australia
| | - George N. Khairallah
- School
of Chemistry, ‡Bio21 Institute of Molecular Science and Biotechnology, and §ARC Centre of
Excellence for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne,
Victoria 3010, Australia
| | - Richard A. J. O’Hair
- School
of Chemistry, ‡Bio21 Institute of Molecular Science and Biotechnology, and §ARC Centre of
Excellence for Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne,
Victoria 3010, Australia
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20
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Röhr MIS, Petersen J, Brunet C, Antoine R, Broyer M, Dugourd P, Bonačić-Koutecký V, O'Hair RAJ, Mitrić R. Synthesis and Spectroscopic Characterization of Diphenylargentate, [(C6H5)2Ag](.). J Phys Chem Lett 2012; 3:1197-1201. [PMID: 26288055 DOI: 10.1021/jz300280f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present the structural and optical properties of the isolated diphenylargentate anion, which has been synthesized by multistage mass spectrometry in a quadrupole ion trap. The experimental photodetachment spectrum has been obtained by action spectroscopy. Comparison with quantum chemical calculations of the electronic absorption spectrum allows for a precise characterization of the spectroscopic features, showing that in the low-energy regime, the optical properties of diphenylargentate bear a significant resemblance to those of atomic silver.
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Affiliation(s)
- M I S Röhr
- †Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, D-12489 Berlin, Germany
| | - J Petersen
- ‡Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
| | - C Brunet
- §Université Lyon 1, CNRS, 43 Bd du 11 Novembre 1918, F-69622 Villeurbanne cedex, France
| | - R Antoine
- §Université Lyon 1, CNRS, 43 Bd du 11 Novembre 1918, F-69622 Villeurbanne cedex, France
| | - M Broyer
- §Université Lyon 1, CNRS, 43 Bd du 11 Novembre 1918, F-69622 Villeurbanne cedex, France
| | - P Dugourd
- §Université Lyon 1, CNRS, 43 Bd du 11 Novembre 1918, F-69622 Villeurbanne cedex, France
| | - V Bonačić-Koutecký
- †Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Strasse 2, D-12489 Berlin, Germany
- ⊥Interdisciplinary Center for Advanced Science and Technology, University of Split, Meštrovićevo Šetalište 45, HR-21000 Split, Croatia
| | - R A J O'Hair
- #School of Chemistry, Bio21 Institute of Molecular Science and Biotechnology, ARC Centre of Excellence in Free Radical Chemistry and Biotechnology, The University of Melbourne, Melbourne, Victoria, 3010, Australia
| | - R Mitrić
- ‡Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany
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21
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Sraj LO, Khairallah GN, da Silva G, O’Hair RAJ. Who Wins: Pesci, Peters, or Deacon? Intrinsic Reactivity Orders for Organocuprate Formation via Ligand Decomposition. Organometallics 2012. [DOI: 10.1021/om2011722] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lenka O’Connor Sraj
- School of Chemistry, Bio21 Institute
of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - George N. Khairallah
- School of Chemistry, Bio21 Institute
of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Gabriel da Silva
- Department of Chemical and Biomolecular, The University of Melbourne, Melbourne, Victoria 3010,
Australia
| | - Richard A. J. O’Hair
- School of Chemistry, Bio21 Institute
of Molecular Science and Biotechnology, The University of Melbourne, Melbourne, Victoria 3010, Australia
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22
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Rijs NJ, O'Hair RAJ. Forming trifluoromethylmetallates: competition between decarboxylation and C-F bond activation of group 11 trifluoroacetate complexes, [CF3CO2ML]-. Dalton Trans 2012; 41:3395-406. [PMID: 22310991 DOI: 10.1039/c2dt12117d] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combination of gas-phase 3D quadrupole ion trap mass spectrometry experiments and density functional theory (DFT) calculations have been used to examine the mechanism of thermal decomposition of fluorinated coinage metal carboxylates. The precursor anions, [CF(3)CO(2)MO(2)CCF(3)](-) (M = Cu, Ag and Au), were introduced into the gas-phase via electrospray ionization. Multistage mass spectrometry (MS(n)) experiments were conducted utilizing collision-induced dissociation, yielding a series of trifluoromethylated organometallic species and fluorides via the loss of CO(2), CF(2) or "CF(2)CO(2)". Carboxylate ligand loss was insignificant or absent in all cases. DFT calculations were carried out on a range of potentially competing fragmentation pathways for [CF(3)CO(2)MO(2)CCF(3)](-), [CF(3)CO(2)MCF(3)](-) and [CF(3)CO(2)MF](-). These shed light on possible products and mechanisms for loss of "CF(2)CO(2)", namely, concerted or step-wise loss of CO(2) and CF(2) and a CF(2)CO(2) lactone pathway. The lactone pathway was found to be higher in energy in all cases. In addition, the possibility of forming [CF(3)MCF(3)](-) and [CF(3)MF](-), via decarboxylation is discussed. For the first time the novel fluoride complexes [FMF](-), M = Cu, Ag and Au have been experimentally observed. Finally, the decomposition reactions of [CF(3)CO(2)ML](-) (where L = CF(3) and CF(3)CO(2)) and [CH(3)CO(2)ML](-) (where L = CH(3) and CH(3)CO(2)) are compared.
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Affiliation(s)
- Nicole J Rijs
- School of Chemistry, University of Melbourne, Victoria, 3010, Australia
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