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Pearce KG, Morris LJ, Robinson TP, Johnson AL, Mahon MF, Hill MS. From alkaline earth to coinage metal carboranyls. Dalton Trans 2024; 53:6653-6659. [PMID: 38525661 DOI: 10.1039/d4dt00478g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
The β-diketiminato calcium and magnesium complexes, [(BDI)MgnBu] and [(BDI)CaH]2 (BDI = HC{C(Me)NDipp}2; Dipp = 2,6-di-isopropylphenyl), react with ortho-carborane (o-C2B10H12) to provide the respective [(BDI)Ae(o-C2B10H11)] (Ae = Mg or Ca) complexes. While the lighter group 2 species is a monomer with magnesium in a distorted trigonal planar environment, the heavier analogue displays a puckered geometry at calcium in the solid state due to Ca⋯H-B intermolecular interactions. These secondary contacts are, however, readily disrupted upon addition of THF to provide the 4-coordinate monomer, [(BDI)Ca(THF)(o-C2B10H11)]. [(BDI)Mg(o-C2B10H11)] was reacted with [NHCIPrMCl] (NHCIPr = 1,3-bis(isopropyl)imidazol-2-ylidene; M = Cu, Ag, Au) to provide [NHCIPrM(o-C2B10H11)], rare C-bonded examples of coinage metal derivatives of unsubstituted (o-C2B10H11)- and confirming the alkaline earth compounds as viable reagents for the transmetalation of the carboranyl anion.
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Affiliation(s)
- Kyle G Pearce
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Louis J Morris
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Thomas P Robinson
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Andrew L Johnson
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Mary F Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Michael S Hill
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
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2
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Paenurk E, Chen P. Robustness of Threshold Collision-Induced Dissociation Simulations for Bond Dissociation Energies. J Phys Chem A 2024; 128:333-342. [PMID: 38155581 DOI: 10.1021/acs.jpca.3c06862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
The threshold collision-induced dissociation (T-CID) method is the workhorse for gas-phase bond dissociation energy (BDE) measurements. However, T-CID does not measure BDEs directly; instead, BDEs are obtained by fitting simulated data to the experimental data. We previously observed several large discrepancies between the computed and experimental BDEs. To analyze the reliability of the experimental values, we previously reported a study of the dissociation rate models in the simulation. Here, we report a study of the collision simulation part, specifically in the L-CID (ligand CID) program. We show that the BDE values are robust even to intentionally introduced mistakes in the simulations, varying in most cases by less than 3 kcal mol-1. The most significant exception is the collisional energy transfer (CET) simulation, which led to deviations larger than 10 kcal mol-1. However, we found that the BDEs obtained with explicitly simulated CET distributions deviated by only 3 kcal mol-1 from those simulated with the original model. Collectively, our results suggest that the T-CID-derived BDE values are robust and are likely to be accurate.
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Affiliation(s)
- Eno Paenurk
- Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich 8093, Switzerland
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
| | - Peter Chen
- Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich 8093, Switzerland
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3
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Zelenka J, Pereverzev A, Jahn U, Roithová J. Sulfonyl Nitrene and Amidyl Radical: Structure and Reactivity. Chemistry 2022; 28:e202104493. [PMID: 35266598 PMCID: PMC9323475 DOI: 10.1002/chem.202104493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Indexed: 11/10/2022]
Abstract
Photocatalytic generation of nitrenes and radicals can be used to tune or even control their reactivity. Photocatalytic activation of sulfonyl azides leads to the elimination of N2 and the resulting reactive species initiate C−H activations and amide formation reactions. Here, we present reactive radicals that are generated from sulfonyl azides: sulfonyl nitrene radical anion, sulfonyl nitrene and sulfonyl amidyl radical, and test their gas phase reactivity in C−H activation reactions. The sulfonyl nitrene radical anion is the least reactive and its reactivity is governed by the proton coupled electron transfer mechanism. In contrast, sulfonyl nitrene and sulfonyl amidyl radicals react via hydrogen atom transfer pathways. These reactivities and detailed characterization of the radicals with vibrational spectroscopy and with DFT calculations provide information necessary for taking control over the reactivity of these intermediates.
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Affiliation(s)
- Jan Zelenka
- Department of Spectroscopy and Catalysis Institute for Molecules and Materials Radboud University Nijmegen, Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Aleksandr Pereverzev
- Department of Spectroscopy and Catalysis Institute for Molecules and Materials Radboud University Nijmegen, Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Jana Roithová
- Department of Spectroscopy and Catalysis Institute for Molecules and Materials Radboud University Nijmegen, Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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4
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Mao X, Zhang J, Lu Z, Xie Z. A (μ-hydrido)diborane(4) anion and its coordination chemistry with coinage metals. Chem Sci 2022; 13:3009-3013. [PMID: 35382458 PMCID: PMC8905795 DOI: 10.1039/d2sc00318j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 02/10/2022] [Indexed: 11/21/2022] Open
Abstract
A tetra(o-tolyl) (μ-hydrido)diborane(4) anion 1, an analogue of [B2H5]- species, was facilely prepared through the reaction of tetra(o-tolyl)diborane(4) with sodium hydride. Unlike common sp2-sp3 diborane species, 1 exhibited a σ-B-B bond nucleophilicity towards NHC-coordinated transition-metal (Cu, Ag, and Au) halides, resulting in the formation of η2-B-B bonded complexes 2 as confirmed by single-crystal X-ray analyses. Compared with 1, the structural data of 2 imply significant elongations of B-B bonds, following the order Au > Cu > Ag. DFT studies show that the diboron ligand interacts with the coinage metal through a three-center-two-electron B-M-B bonding mode. The fact that the B-B bond of the gold complex is much prolonged than the related Cu and Ag compounds might be ascribed to the superior electrophilicity of the gold atom.
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Affiliation(s)
- Xiaofeng Mao
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Jie Zhang
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Zhenpin Lu
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Zuowei Xie
- Department of Chemistry, 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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Edington SC, Perez EH, Charboneau DJ, Menges FS, Hazari N, Johnson MA. Chemical Reduction of Ni II Cyclam and Characterization of Isolated Ni I Cyclam with Cryogenic Vibrational Spectroscopy and Inert-Gas-Mediated High-Resolution Mass Spectrometry. J Phys Chem A 2021; 125:6715-6721. [PMID: 34324319 DOI: 10.1021/acs.jpca.1c05016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
NiII cyclam (cyclam = 1,4,8,11-tetraazacyclotetradecane) is an efficient catalyst for the selective reduction of CO2 to CO. A crucial elementary step in the proposed catalytic cycle is the coordination of CO2 to a NiI cyclam intermediate. Isolation and spectroscopic characterization of this labile NiI species without solvent has proven to be challenging, however, and only partial IR spectra have previously been reported using multiple photon fragmentation of ions generated by gas-phase electron transfer to the NiII cyclam dication at 300 K. Here, we report a chemical reduction method that efficiently prepares NiI cyclam in solution. This enables the NiI complex to be transferred into a cryogenic photofragmentation mass spectrometer using inert-gas-mediated electrospray ionization. The vibrational spectra of the 30 K ion using both H2 and N2 messenger tagging over the range 800-4000 cm-1 were then measured. The resulting spectra were analyzed with the aid of electronic structure calculations, which show strong method dependence in predicted band positions and small molecule activation. The conformational changes of the cyclam ligand induced by binding of the open shell NiI cation were compared with those caused by the spherical, closed-shell LiI cation, which has a similar ionic radius. We also report the vibrational spectrum of a NiI cyclam complex with a strongly bound O2 ligand. The cyclam ligand supporting this species exhibits a large conformational change compared to the complexes with weakly bound N2 and H2, which is likely due to significant charge transfer from Ni to the coordinated O2.
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Affiliation(s)
- Sean C Edington
- Sterling Chemistry Laboratory, Chemistry Department, Yale University, New Haven, Connecticut 06520, United States
| | - Evan H Perez
- Sterling Chemistry Laboratory, Chemistry Department, Yale University, New Haven, Connecticut 06520, United States
| | - David J Charboneau
- Sterling Chemistry Laboratory, Chemistry Department, Yale University, New Haven, Connecticut 06520, United States
| | - Fabian S Menges
- Sterling Chemistry Laboratory, Chemistry Department, Yale University, New Haven, Connecticut 06520, United States
| | - Nilay Hazari
- Sterling Chemistry Laboratory, Chemistry Department, Yale University, New Haven, Connecticut 06520, United States
| | - Mark A Johnson
- Sterling Chemistry Laboratory, Chemistry Department, Yale University, New Haven, Connecticut 06520, United States
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6
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Paenurk E, Chen P. Modeling Gas-Phase Unimolecular Dissociation for Bond Dissociation Energies: Comparison of Statistical Rate Models within RRKM Theory. J Phys Chem A 2021; 125:1927-1940. [PMID: 33635061 DOI: 10.1021/acs.jpca.1c00183] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Rice-Ramsperger-Kassel-Marcus (RRKM) theory provides a simple yet powerful rate theory for calculating microcanonical rate constants. In particular, it has found widespread use in combination with gas-phase kinetic experiments of unimolecular dissociations to extract experimental bond dissociation energies (BDEs). We have previously found several discrepancies between the computed BDE values and the respective experimental ones, obtained with our empirical rate model, named L-CID. To investigate the reliability of our rate model, we conducted a theoretical analysis and comparison of the performance of conventional rate models and L-CID within the RRKM framework. Using the previously published microcanonical rate data as well as reaction cross-section data, we show that the BDE values obtained with the L-CID model agree with the ones from the other rate models within the expected uncertainty bounds. Based on this agreement, we discuss the possible rationalization of the good performance of the L-CID model.
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Affiliation(s)
- Eno Paenurk
- Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
| | - Peter Chen
- Department of Chemistry and Applied Biosciences, ETH Zürich, 8093 Zürich, Switzerland
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7
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Ma Q, Werner HJ. Scalable Electron Correlation Methods. 8. Explicitly Correlated Open-Shell Coupled-Cluster with Pair Natural Orbitals PNO-RCCSD(T)-F12 and PNO-UCCSD(T)-F12. J Chem Theory Comput 2021; 17:902-926. [PMID: 33405921 DOI: 10.1021/acs.jctc.0c01129] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We present explicitly correlated open-shell pair natural orbital local coupled-cluster methods, PNO-RCCSD(T)-F12 and PNO-UCCSD(T)-F12. The methods are extensions of our previously reported PNO-R/UCCSD methods (J. Chem. Theory Comput., 2020, 16, 3135-3151, https://pubs.acs.org/doi/10.1021/acs.jctc.0c00192) with additions of explicit correlation and perturbative triples corrections. The explicit correlation treatment follows the spin-orbital CCSD-F12b theory using Ansatz 3*A, which is found to yield comparable or better basis set convergence than the more rigorous Ansatz 3C in computed ionization potentials and reaction energies using double- to quaduple-ζ basis sets. The perturbative triples correction is adapted from the spin-orbital (T) theory to use triples natural orbitals (TNOs). To address the coupling due to off-diagonal Fock matrix elements, the local triples amplitudes are iteratively solved using small domains of TNOs, and a semicanonical (T0) domain correction with larger domains is applied to reduce the domain errors. The performance of the methods is demonstrated through benchmark calculations on ionization potentials, radical stabilization energies, reaction energies of fragmentations and rearrangements in radical cations, and spin-state energy differences of iron complexes. For a few test sets where canonical calculations are feasible, PNO-RCCSD(T)-F12 results agree with the canonical ones to within 0.4 kcal mol-1, and this maximum error is reduced to below 0.2 kcal mol-1 when large local domains are used. For larger systems, results using different thresholds for the local approximations are compared to demonstrate that 1 kcal mol-1 level of accuracy can be achieved using our default settings. For a couple of difficult cases, it is demonstrated that the errors from individual approximations are only a fraction of 1 kcal mol-1, and the overall accuracy of the method does not rely on error compensations. In contrast to canonical calculations, the use of spin-orbitals does not lead to a significant increase of computational time and memory usage in the most expensive steps of PNO-R/UCCSD(T)-F12 calculations. The only exception is the iterative solution of the (T) amplitudes, which can be avoided without significant errors by using a perturbative treatment of the off-diagonal coupling, known as (T1) approximation. For most systems, even the semicanonical approximation (T0) leads only to small errors in relative energies. Our program is well parallelized and capable of computing accurate correlation energies for molecules with 100-200 atoms using augmented triple-ζ basis sets in less than a day of elapsed time on a small computer cluster.
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Affiliation(s)
- Qianli Ma
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Hans-Joachim Werner
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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8
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Tsybizova A, Paenurk E, Gorbachev V, Chen P. Perturbation of Pyridinium CIVP Spectra by N 2 and H 2 Tags: An Experimental and BOMD Study. J Phys Chem A 2020; 124:8519-8528. [PMID: 32954731 DOI: 10.1021/acs.jpca.0c06752] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In cryogenic ion vibrational predissociation (CIVP) spectroscopy, the influence of the tag on the spectrum is an important consideration. Whereas for small ions several studies have shown that the tag effects can be significant, these effects are less understood for large ions or for large numbers of tags. Nevertheless, it is commonly assumed that if the investigated molecular ion is large enough, the perturbations arising from the tag are small and can therefore be neglected in the interpretation. In addition, it is generally assumed that the more weakly bound the tag is, the less it perturbs the CIVP spectrum. Under these assumptions, CIVP spectra are claimed to be effectively IR absorption spectra of the free molecular ion. Having observed unexpected splittings in otherwise unproblematic CIVP spectra of some tagged ions, we report Born-Oppenheimer molecular dynamics (BOMD) simulations that strongly indicate that mobility among the more weakly bound tags leads to the surprising splittings. We compared the behavior of two tags commonly used in CIVP spectroscopy (H2 and N2) with a large pyridinium cation. Our experimental results surprisingly show that under the appropriate circumstances, the more weakly bound tag can perturb the CIVP spectra more than the more strongly bound tag by not just shifting but also splitting the observed bands. The more weakly bound tag had significant residence times at several spectroscopically distinct sites on the molecular ion. This indicates that the weakly bound tag is likely to sample several binding sites in the experiment, some of which involve interaction with the reporter chromophore.
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Affiliation(s)
- Alexandra Tsybizova
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Eno Paenurk
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Vladimir Gorbachev
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Peter Chen
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
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9
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Bot M, Gorbachev V, Tsybizova A, Chen P. Bond Dissociation Energies in the Gas Phase for Large Molecular Ions by Threshold Collision-Induced Dissociation Experiments: Stretching the Limits. J Phys Chem A 2020; 124:8692-8707. [PMID: 32955888 DOI: 10.1021/acs.jpca.0c05712] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Accurate bond dissociation energies for large molecules are difficult to obtain by either experimental or computational methods. The former methods are hampered by a range of physical and practical limitations in gas-phase measurement techniques, while the latter require incorporation of multiple approximations whose impact on accuracy may not always be clear. When internal benchmarks are not available, one hopes that experiment and theory can mutually support each other. A recent report found, however, a large discrepancy between gas-phase bond dissociation energies, measured mass spectrometrically, and the corresponding quantities computed using density functional theory (DFT)-D3 and DLPNO-CCSD(T) methods. With the widespread application of these computational methods to large molecular systems, the discrepancy needs to be resolved. We report a series of experimental studies that validate the mass spectrometric methods from small to large ions and find that bond dissociation energies extracted from threshold collision-induced dissociation experiments on large ions do indeed behave correctly. The implications for the computational studies are discussed.
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Affiliation(s)
- Marek Bot
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Vladimir Gorbachev
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Alexandra Tsybizova
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Peter Chen
- Laboratorium für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
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10
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Perez EH, Menges FS, Cattaneo M, Mayer JM, Johnson MA. Characterization of the non-covalent docking motif in the isolated reactant complex of a double proton-coupled electron transfer reaction with cryogenic ion spectroscopy. J Chem Phys 2020; 152:234309. [PMID: 32571036 PMCID: PMC7304996 DOI: 10.1063/5.0012176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/27/2020] [Indexed: 01/17/2023] Open
Abstract
The solution kinetics of a proton-coupled electron transfer reaction involving two-electron oxidation of a Ru compound with concomitant transfer of two protons to a quinone derivative have been interpreted to indicate the formation of a long-lived intermediate between the reactants. We characterize the ionic reactants, products, and an entrance channel reaction complex in the gas phase using high-resolution mass spectrometry augmented by cryogenic ion IR photodissociation spectroscopy. Collisional activation of this trapped entrance channel complex does not drive the reaction to products but rather yields dissociation back to reactants. Electronic structure calculations indicate that there are four low-lying isomeric forms of the non-covalently bound complex. Comparison of their predicted vibrational spectra with the observed band pattern indicates that the C=O groups of the ortho-quinone attach to protons on two different -NH2 groups of the reactant scaffold, exhibiting strong O-H-N contact motifs. Since collisional activation does not lead to the products observed in the liquid phase, these results indicate that the reaction most likely proceeds through reorientation of the H-atom donor ligand about the metal center.
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Affiliation(s)
- Evan H. Perez
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, Connecticut 06520, USA
| | - Fabian S. Menges
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, Connecticut 06520, USA
| | - Mauricio Cattaneo
- INQUINOA-CONICET, Instituto de Química Física, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, T4000INI San Miguel de Tucumán, Argentina
| | - James M. Mayer
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, Connecticut 06520, USA
| | - Mark A. Johnson
- Department of Chemistry, Yale University, 225 Prospect St., New Haven, Connecticut 06520, USA
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11
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Krause C, Werner HJ. Scalable Electron Correlation Methods. 6. Local Spin-Restricted Open-Shell Second-Order Møller-Plesset Perturbation Theory Using Pair Natural Orbitals: PNO-RMP2. J Chem Theory Comput 2019; 15:987-1005. [PMID: 30571916 DOI: 10.1021/acs.jctc.8b01012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present a (near) linear scaling implementation of high-spin open-shell Møller-Plesset perturbation theory using pair natural orbitals (PNO-RMP2). The theory is based on a new variant of open-shell MP2 which is fully spin-adapted and uses a single set of spin-free amplitudes, as in closed-shell MP2. This method, denoted SROMP2, is invariant to unitary orbital transformations within the closed, open, and virtual orbital subspaces. Accordingly, only a single set of PNOs per spatial orbital pair is needed, and the efficiency is similar to closed-shell calculations. The PNOs are obtained using a semicanonical approximation with large domains of projected atomic orbitals (PAOs). Linear scaling is achieved provided that the open-shell orbitals are local, and distant pairs are treated by multipole approximations. The method is efficiently parallelized. The convergence of ionization and reaction energies as a function of the PAO and PNO domain sizes is demonstrated and found to be very similar as for closed-shell calculations. The suitability of the PNOs for explicitly correlated PNO-RCCSD-F12 calculations is also tested. So far, this method is only simulated using a conventional program with appropriate projections to the PAO and PNO subspaces. It is demonstrated for radical stabilization energies as well as ionization potentials that the errors caused by the local domain approximations with our default thresholds are negligible.
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Affiliation(s)
- Christine Krause
- Institut für Theoretische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
| | - Hans-Joachim Werner
- Institut für Theoretische Chemie , Universität Stuttgart , Pfaffenwaldring 55 , D-70569 Stuttgart , Germany
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12
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Ma Q, Werner H. Explicitly correlated local coupled‐cluster methods using pair natural orbitals. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2018. [DOI: 10.1002/wcms.1371] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Qianli Ma
- Institute for Theoretical ChemistryUniversity of StuttgartStuttgartGermany
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13
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Greisch JF, Weis P, Brendle K, Kappes MM, Haler JRN, Far J, De Pauw E, Albers C, Bay S, Wurm T, Rudolph M, Schulmeister J, Hashmi ASK. Detection of Intermediates in Dual Gold Catalysis Using High-Resolution Ion Mobility Mass Spectrometry. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00128] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jean-François Greisch
- Institute of Physical Chemistry, KIT, D-76131 Karlsruhe, Germany
- Institute of Nanotechnology, KIT, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Patrick Weis
- Institute of Physical Chemistry, KIT, D-76131 Karlsruhe, Germany
| | - Katrina Brendle
- Institute of Physical Chemistry, KIT, D-76131 Karlsruhe, Germany
| | - Manfred M. Kappes
- Institute of Physical Chemistry, KIT, D-76131 Karlsruhe, Germany
- Institute of Nanotechnology, KIT, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Jean R. N. Haler
- Mass Spectrometry Laboratory, University of Liège, MolSys Research Unit, B-4000 Liège, Belgium
| | - Johann Far
- Mass Spectrometry Laboratory, University of Liège, MolSys Research Unit, B-4000 Liège, Belgium
| | - Edwin De Pauw
- Mass Spectrometry Laboratory, University of Liège, MolSys Research Unit, B-4000 Liège, Belgium
| | | | - Sarah Bay
- Organic Chemistry Institute, Heidelberg University, D-69120 Heidelberg, Germany
| | - Thomas Wurm
- Organic Chemistry Institute, Heidelberg University, D-69120 Heidelberg, Germany
| | - Matthias Rudolph
- Organic Chemistry Institute, Heidelberg University, D-69120 Heidelberg, Germany
| | - Jürgen Schulmeister
- Organic Chemistry Institute, Heidelberg University, D-69120 Heidelberg, Germany
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14
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Husch T, Freitag L, Reiher M. Calculation of Ligand Dissociation Energies in Large Transition-Metal Complexes. J Chem Theory Comput 2018; 14:2456-2468. [PMID: 29595973 DOI: 10.1021/acs.jctc.8b00061] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The accurate calculation of ligand dissociation (or equivalently, ligand binding) energies is crucial for computational coordination chemistry. Despite its importance, obtaining accurate ab initio reference data is difficult, and density-functional methods of uncertain reliability are chosen for feasibility reasons. Here, we consider advanced coupled-cluster and multiconfigurational approaches to reinvestigate our WCCR10 set of 10 gas-phase ligand dissociation energies [ J. Chem. Theory Comput. 2014, 10, 3092]. We assess the potential multiconfigurational character of all molecules involved in these reactions with a multireference diagnostic [ Mol. Phys. 2017, 115, 2110] in order to determine where single-reference coupled-cluster approaches can be applied. For some reactions of the WCCR10 set, large deviations of density-functional results including semiclassical dispersion corrections from experimental reference data had been observed. This puzzling observation deserves special attention here, and we tackle the issue (i) by comparing to ab initio data that comprise dispersion effects on a rigorous first-principles footing and (ii) by a comparison of density-functional approaches that model dispersion interactions in various ways. For two reactions, species exhibiting nonnegligible static electron correlation were identified. These two reactions represent hard problems for electronic structure methods and also for multireference perturbation theories. However, most of the ligand dissociation reactions in WCCR10 do not exhibit static electron correlation effects, and hence, we may choose standard single-reference coupled-cluster approaches to compare with density-functional methods. For WCCR10, the Minnesota M06-L functional yielded the smallest mean absolute deviation of 13.2 kJ mol-1 out of all density functionals considered (PBE, BP86, BLYP, TPSS, M06-L, PBE0, B3LYP, TPSSh, and M06-2X) without additional dispersion corrections in comparison to the coupled-cluster results, and the PBE0-D3 functional produced the overall smallest mean absolute deviation of 4.3 kJ mol-1. The agreement of density-functional results with coupled-cluster data increases significantly upon inclusion of any type of dispersion correction. It is important to emphasize that different density-functional schemes available for this purpose perform equally well. The coupled-cluster dissociation energies, however, deviate from experimental results on average by 30.3 kJ mol-1. Possible reasons for these deviations are discussed.
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Affiliation(s)
- Tamara Husch
- Laboratorium für Physikalische Chemie , ETH Zürich , Vladimir-Prelog-Weg 2 , 8093 Zürich , Switzerland
| | - Leon Freitag
- Laboratorium für Physikalische Chemie , ETH Zürich , Vladimir-Prelog-Weg 2 , 8093 Zürich , Switzerland
| | - Markus Reiher
- Laboratorium für Physikalische Chemie , ETH Zürich , Vladimir-Prelog-Weg 2 , 8093 Zürich , Switzerland
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15
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Zhang X, Li N, Wang H, Yuan C, Gu G, Zhang Y, Nieckarz D, Szabelski P, Hou S, Teo BK, Wang Y. Influence of Relativistic Effects on Assembled Structures of V-Shaped Bispyridine Molecules on M(111) Surfaces Where M = Cu, Ag, Au. ACS NANO 2017; 11:8511-8518. [PMID: 28726372 DOI: 10.1021/acsnano.7b04559] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The self-assembly behavior of a V-shaped bispyridine, 1,3-bi(4-pyridyl)benzene (BPyB), was studied by scanning tunneling microscopy on the (111) surfaces of Cu, Ag, and Au. BPyB molecules coordinately bonded with active Cu adatoms on Cu(111) in the form of complete polygonal rings at low coverages. On Ag(111), BPyB molecules aggregated into two-dimensional islands by relatively weak intermolecular hydrogen bonds. The coexistence of hydrogen bonds and coordination interaction was observed on the BPyB-covered Au(111) substrate. Density functional theory calculations of the metal-molecule binding energy and Monte Carlo simulations were performed to help understand the forming mechanism of molecular superstructures on the surfaces. In particular, the comprehensive orbital composition analysis interprets the observed metal-organic complexes and reveals the importance of relativistic effects for the extraordinary activity of gold adatoms. The relativistic effects cause the energy stability of the Au 6s atomic orbital and decrease the energy separation between the Au 6s and 5d orbitals. The enhanced sd hybridization strengthens the N-Au-N bond in BPyB-Au-BPyB complexes.
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Affiliation(s)
- Xue Zhang
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Na Li
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Hao Wang
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Chenyang Yuan
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Gaochen Gu
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Yajie Zhang
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Damian Nieckarz
- Supramolecular Chemistry Laboratory, University of Warsaw , Biological and Chemical Research Centre, Zwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Paweł Szabelski
- Department of Theoretical Chemistry, Maria-Curie Skłodowska University , Pl. M.C. Skłodowskiej 3, 20-031 Lublin, Poland
| | - Shimin Hou
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
- Peking University Information Technology Institute Tianjin Binhai , Tianjin 300450, China
| | - Boon K Teo
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
| | - Yongfeng Wang
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University , Beijing 100871, China
- Peking University Information Technology Institute Tianjin Binhai , Tianjin 300450, China
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16
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Schwilk M, Ma Q, Köppl C, Werner HJ. Scalable Electron Correlation Methods. 3. Efficient and Accurate Parallel Local Coupled Cluster with Pair Natural Orbitals (PNO-LCCSD). J Chem Theory Comput 2017; 13:3650-3675. [DOI: 10.1021/acs.jctc.7b00554] [Citation(s) in RCA: 100] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Max Schwilk
- Institut für Theoretische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Qianli Ma
- Institut für Theoretische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Christoph Köppl
- Institut für Theoretische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - Hans-Joachim Werner
- Institut für Theoretische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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17
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Oeschger RJ, Chen P. Structure and Gas-Phase Thermochemistry of a Pd/Cu Complex: Studies on a Model for Transmetalation Transition States. J Am Chem Soc 2017; 139:1069-1072. [DOI: 10.1021/jacs.6b12152] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raphael J. Oeschger
- Laboratorium für Organische
Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Peter Chen
- Laboratorium für Organische
Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
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18
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Lang J, Cayir M, Walg SP, Di Martino-Fumo P, Thiel WR, Niedner-Schatteburg G. Intermetallic Competition in the Fragmentation of Trimetallic Au-Zn-Alkali Complexes. Chemistry 2016; 22:2345-55. [PMID: 26785330 DOI: 10.1002/chem.201504093] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Indexed: 12/20/2022]
Affiliation(s)
- Johannes Lang
- Fachbereich Chemie and Forschungszentrum OPTIMAS; Technische Universität Kaiserslautern; 67663 Kaiserslautern Germany
| | - Merve Cayir
- Fachbereich Chemie and Forschungszentrum OPTIMAS; Technische Universität Kaiserslautern; 67663 Kaiserslautern Germany
| | - Simon P. Walg
- Fachbereich Chemie and Forschungszentrum OPTIMAS; Technische Universität Kaiserslautern; 67663 Kaiserslautern Germany
| | - Patrick Di Martino-Fumo
- Fachbereich Chemie and Forschungszentrum OPTIMAS; Technische Universität Kaiserslautern; 67663 Kaiserslautern Germany
| | - Werner R. Thiel
- Fachbereich Chemie and Forschungszentrum OPTIMAS; Technische Universität Kaiserslautern; 67663 Kaiserslautern Germany
| | - Gereon Niedner-Schatteburg
- Fachbereich Chemie and Forschungszentrum OPTIMAS; Technische Universität Kaiserslautern; 67663 Kaiserslautern Germany
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19
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Gaffga M, Munstein I, Müller P, Lang J, Thiel WR, Niedner-Schatteburg G. Multistate-Mediated Rearrangements and FeCl2 Elimination in Dinuclear FePd Complexes. J Phys Chem A 2015; 119:12587-98. [PMID: 26595679 DOI: 10.1021/acs.jpca.5b06952] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mass spectrometric, spectroscopic, and computational characterization of a novel bifunctional iron-palladium complex proves a change of coordination upon solvation. Collisional excitation reveals FeCl2 and HCl elimination in a solvent-modulated competition. Hereby, syn and anti isomers, identified by theoretical calculations, favor and disfavor FeCl2 elimination, respectively. The FeCl2 elimination likely proceeds by chlorido and Cp ligand exchange among the metallic centers in a concerted, ballet-like manner. A multitude of stationary points were identified along the computed multistep reaction coordinates of the three conceivable spin states. The quintet state shows a static Jahn-Teller type relaxation by a tilt away of the Cp ligand at the iron center. The direct singlet-quintet spin crossover is an unprecedented assumption, leaving behind the triplet state as a spectator without involvement. The FeCl2 elimination would decrease catalytic activity. It is kinetically hindered within a range of applicable temperatures in conceivable technical applications.
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Affiliation(s)
- Maximilian Gaffga
- Fachbereich Chemie und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
| | - Isabel Munstein
- Fachbereich Chemie und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
| | - Patrick Müller
- Fachbereich Chemie und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
| | - Johannes Lang
- Fachbereich Chemie und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
| | - Werner R Thiel
- Fachbereich Chemie und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
| | - Gereon Niedner-Schatteburg
- Fachbereich Chemie und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern , 67663 Kaiserslautern, Germany
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20
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Menges FS, Craig SM, Tötsch N, Bloomfield A, Ghosh S, Krüger HJ, Johnson MA. Capture of CO2
by a Cationic Nickel(I) Complex in the Gas Phase and Characterization of the Bound, Activated CO2
Molecule by Cryogenic Ion Vibrational Predissociation Spectroscopy. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507965] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fabian S. Menges
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Stephanie M. Craig
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Niklas Tötsch
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Aaron Bloomfield
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Subrata Ghosh
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Strasse 67663 Kaiserslautern Germany
| | - Hans-Jörg Krüger
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Strasse 67663 Kaiserslautern Germany
| | - Mark A. Johnson
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
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21
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Menges FS, Craig SM, Tötsch N, Bloomfield A, Ghosh S, Krüger HJ, Johnson MA. Capture of CO2
by a Cationic Nickel(I) Complex in the Gas Phase and Characterization of the Bound, Activated CO2
Molecule by Cryogenic Ion Vibrational Predissociation Spectroscopy. Angew Chem Int Ed Engl 2015; 55:1282-5. [DOI: 10.1002/anie.201507965] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Fabian S. Menges
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Stephanie M. Craig
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Niklas Tötsch
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Aaron Bloomfield
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
| | - Subrata Ghosh
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Strasse 67663 Kaiserslautern Germany
| | - Hans-Jörg Krüger
- Fachbereich Chemie; Technische Universität Kaiserslautern; Erwin-Schrödinger-Strasse 67663 Kaiserslautern Germany
| | - Mark A. Johnson
- Department of Chemistry; Yale University; 225 Prospect St. New Haven CT 06511 USA
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22
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Zhou S, Li J, Wu XN, Schlangen M, Schwarz H. Au+
-vermittelte, effiziente Kupplung eines Carbenliganden mit Methan: Bildung von C2
H
x
(x=
4, 6) bei Raumtemperatur. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509320] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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23
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Zhou S, Li J, Wu XN, Schlangen M, Schwarz H. Efficient Room-Temperature, Au+
-Mediated Coupling of a Carbene Ligand with Methane To Generate C2
H
x
(x=
4, 6). Angew Chem Int Ed Engl 2015; 55:441-4. [DOI: 10.1002/anie.201509320] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 11/06/2022]
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24
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Ma Q, Werner HJ. Scalable Electron Correlation Methods. 2. Parallel PNO-LMP2-F12 with Near Linear Scaling in the Molecular Size. J Chem Theory Comput 2015; 11:5291-304. [DOI: 10.1021/acs.jctc.5b00843] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Qianli Ma
- Institut für Theoretische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Baden-Württemberg, Germany
| | - Hans-Joachim Werner
- Institut für Theoretische
Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Baden-Württemberg, Germany
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25
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Oeschger RJ, Ringger DH, Chen P. Gas-Phase Investigations on the Transmetalation Step in Sonogashira Reactions. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00491] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raphael J. Oeschger
- Laboratorium
für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - David H. Ringger
- Laboratorium
für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Peter Chen
- Laboratorium
für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
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26
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Braunschweig H, Ewing WC, Kramer T, Mattock JD, Vargas A, Werner C. Organometallic Probe for the Electronics of Base-Stabilized Group 11 Metal Cations. Chemistry 2015; 21:12347-56. [DOI: 10.1002/chem.201500788] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Indexed: 11/10/2022]
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27
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Zhou S, Schlangen M, Li J, Wu XN, Schwarz H. Carbon-Atom Extrusion from Halobenzenes and Its Coupling with a Methylene Ligand to Form Acetylene. Chemistry 2015; 21:9629-31. [DOI: 10.1002/chem.201501871] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Indexed: 11/11/2022]
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28
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De Petris A, Crestoni ME, Pirolli A, Rovira C, Iglesias-Fernández J, Chiavarino B, Ragno R, Fornarini S. Binding of azole drugs to heme: A combined MS/MS and computational approach. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.02.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Ringger DH, Kobylianskii IJ, Serra D, Chen P. Quantitative Description of Structural Effects on the Stability of Gold(I) Carbenes. Chemistry 2014; 20:14270-81. [DOI: 10.1002/chem.201403988] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Indexed: 01/28/2023]
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30
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Weymuth T, Couzijn EPA, Chen P, Reiher M. New Benchmark Set of Transition-Metal Coordination Reactions for the Assessment of Density Functionals. J Chem Theory Comput 2014; 10:3092-103. [DOI: 10.1021/ct500248h] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Thomas Weymuth
- ETH Zürich, Laboratorium für Physikalische
Chemie, Vladimir-Prelog-Weg
2, CH-8093 Zürich, Switzerland
| | - Erik P. A. Couzijn
- ETH Zürich, Laboratorium für Organische
Chemie, Vladimir-Prelog-Weg
2, CH-8093 Zürich, Switzerland
| | - Peter Chen
- ETH Zürich, Laboratorium für Organische
Chemie, Vladimir-Prelog-Weg
2, CH-8093 Zürich, Switzerland
| | - Markus Reiher
- ETH Zürich, Laboratorium für Physikalische
Chemie, Vladimir-Prelog-Weg
2, CH-8093 Zürich, Switzerland
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31
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Batiste L, Chen P. Coinage-Metal Mediated Ring Opening of cis-1,2-Dimethoxycyclopropane: Trends from the Gold, Copper, and Silver Fischer Carbene Bond Strength. J Am Chem Soc 2014; 136:9296-307. [DOI: 10.1021/ja4084495] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Laurent Batiste
- Laboratorium für
Organische Chemie,
Eidgenössische Technische Hochschule (ETH Zürich), Vladimir-Prelog-Strasse 2, CH-8093 Zürich, Switzerland
| | - Peter Chen
- Laboratorium für
Organische Chemie,
Eidgenössische Technische Hochschule (ETH Zürich), Vladimir-Prelog-Strasse 2, CH-8093 Zürich, Switzerland
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32
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Couzijn EPA, Kobylianskii IJ, Moret ME, Chen P. Experimental Gas-Phase Thermochemistry for Alkane Reductive Elimination from Pt(IV). Organometallics 2014. [DOI: 10.1021/om500478y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Erik P. A. Couzijn
- Laboratorium
für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Ilia J. Kobylianskii
- Laboratorium
für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Marc-Etienne Moret
- Laboratorium
für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Peter Chen
- Laboratorium
für Organische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
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33
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Boyarkin OV, Kopysov V. Cryogenically cooled octupole ion trap for spectroscopy of biomolecular ions. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2014; 85:033105. [PMID: 24689562 DOI: 10.1063/1.4868178] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present here the design of a linear octupole ion trap, suitable for collisional cryogenic cooling and spectroscopy of large ions. The performance of this trap has been assessed using ultraviolet (UV) photofragmentation spectroscopy of protonated dipeptides. At the trap temperature of 6.1 K, the vibrational temperature of the ions reaches 9.1 K, although their estimated translational temperature is ~150 K. This observation suggests that, despite the significant translational heating by radio-frequency electrical field, vibrational cooling of heavy ions in the octupole is at least as efficient as in the 22-pole ion traps previously used in our laboratory. In contrast to the 22-pole traps, excellent radial confinement of ions in the octupole makes it convenient for laser spectroscopy and boosts the dissociation yield of the stored ions to 30%. Overlap of the entire ion cloud by the laser beam in the octupole also allows for efficient UV depletion spectroscopy of ion-He clusters. The measured electronic spectra of the dipeptides and the clusters differ drastically, complicating a use of UV tagging spectroscopy for structural determination of large species.
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Affiliation(s)
- Oleg V Boyarkin
- Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland
| | - Vladimir Kopysov
- Laboratoire de Chimie Physique Moléculaire, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCPM, Station 6, CH-1015 Lausanne, Switzerland
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34
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35
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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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36
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Nosenko Y, Menges F, Riehn C, Niedner-Schatteburg G. Investigation by two-color IR dissociation spectroscopy of Hoogsteen-type binding in a metalated nucleobase pair mimic. Phys Chem Chem Phys 2013; 15:8171-8. [PMID: 23612714 DOI: 10.1039/c3cp44283g] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Two Ag(I) ions, deprotonated 1-methyl-thymine (1MT-H)(-) and 1,3-dideaza-adenine (DDA), self-assemble in methanolic solution to a cationic [(Ag)2(1MT-H)(DDA)](+) complex as identified by electrospray ionization mass spectrometry. Assignment of vibrational bands and identification of the silver coordination pattern arise from comparison of one- and two-color Infrared Multiple Photon Dissociation (IRMPD) spectra (1000-4000 cm(-1)) of isolated and trapped complexes to calculated spectra from density functional theory. This approach reveals two structurally and energetically close isomers that resemble a metalated Hoogsteen-like binding motif. The two color IR/IR double resonance scheme proved in particular useful to observe weakly absorbing or weakly fragmenting vibrational modes.
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Affiliation(s)
- Yevgeniy Nosenko
- Fachbereich Chemie and Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, Erwin-Schrödinger-Str. 52, Kaiserslautern 67663, Germany.
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37
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Larionov E, Nakanishi M, Katayev D, Besnard C, Kündig EP. Scope and mechanism of asymmetric C(sp3)–H/C(Ar)–X coupling reactions: computational and experimental study. Chem Sci 2013. [DOI: 10.1039/c3sc00098b] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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38
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Schröder D. Applications of electrospray ionization mass spectrometry in mechanistic studies and catalysis research. Acc Chem Res 2012; 45:1521-32. [PMID: 22702223 DOI: 10.1021/ar3000426] [Citation(s) in RCA: 150] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mechanistic studies form the basis for a better understanding of chemical processes, helping researchers develop more sustainable reactions by increasing the yields of the desired products, reducing waste production, and lowering the consumption of resources and energy overall. Conventional methods for the investigation of reaction mechanisms in solution include kinetic studies, isotope labeling, trapping of reactive intermediates, and advanced spectroscopic techniques. Within the past decade, electrospray ionization mass spectrometry (ESI-MS) has provided an additional tool for mechanistic studies because researchers can directly probe liquid samples by mass spectrometry under gentle conditions. Specifically, ESI-MS allows researchers to identify the molecular entities present in solution over the course of a chemical transformation. ESI-MS is particularly useful for investigations of organic reactions or metal catalysis that involve ionic intermediates. Accordingly, researchers are increasingly using ESI-MS in mechanistic studies and catalyst development. However, a further understanding of the ESI process and how it can facilitate mechanistic studies has not accompanied this increased use of the technique. Therefore, at least in part the ESI-MS method not only has offered great promise for the elucidation of reaction mechanisms but also became a black box with the occasional risk of misinterpretation. In this Account, we summarize applications of ESI-MS for synthetic and mechanistic research. Recently researchers have established direct linkages between gas-phase data obtained via ESI-MS and processes occurring in solution, and these results reveal qualitative and quantitative correlations between ESI-MS measurements and solution properties. In this context, time dependences, concentration series, and counterion effects can serve as criteria that allow researchers assess if the gas-phase measurements correlate with the situation in the solution. Furthermore, we report developments that bridge the gap between gas-phase and solution-phase studies. We also describe predictions derived from ESI-MS that have been verified with solution-phase chemistry experiments.
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Affiliation(s)
- Detlef Schröder
- Institute of Organic Chemistry and Biochemistry, Flemingovo nám. 2, 16610 Prague 6, Czech Republic
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39
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Zhong W, Yang Q, Shang Y, Liu G, Zhao H, Li Y, Yan H. Synthesis and Reactivity of the Imido-Bridged Metallothiocarboranes CpCo(S2C2B10H10)(NSO2R). Organometallics 2012. [DOI: 10.1021/om300735d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Zhong
- State Key Laboratory of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University,
Nanjing, Jiangsu 210093, P. R. China
| | - Qiwu Yang
- Department of Chemistry, School
of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Yi Shang
- State Key Laboratory of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University,
Nanjing, Jiangsu 210093, P. R. China
| | - Guifeng Liu
- State Key Laboratory of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University,
Nanjing, Jiangsu 210093, P. R. China
| | - Haitao Zhao
- Department of Chemistry, School
of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Yizhi Li
- State Key Laboratory of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University,
Nanjing, Jiangsu 210093, P. R. China
| | - Hong Yan
- State Key Laboratory of Coordination
Chemistry, School of Chemistry and Chemical Engineering, Nanjing University,
Nanjing, Jiangsu 210093, P. R. China
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40
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Vabre B, Lambert ML, Petit A, Ess DH, Zargarian D. Nickelation of PCP- and POCOP-Type Pincer Ligands: Kinetics and Mechanism. Organometallics 2012. [DOI: 10.1021/om3003784] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Boris Vabre
- Département
de chimie, Université de Montréal, Montréal (Québec),
Canada H3C 3J7
| | - Melinda L. Lambert
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah
84602, United
States
| | - Alban Petit
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah
84602, United
States
| | - Daniel H. Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah
84602, United
States
| | - Davit Zargarian
- Département
de chimie, Université de Montréal, Montréal (Québec),
Canada H3C 3J7
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41
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Soriano E, Marco-Contelles J. A DFT-Based Analysis of the Gold-Catalyzed Cycloisomerization of 1-Siloxy 1,5-Enynes to Cyclohexadienes. J Org Chem 2012; 77:6231-8. [DOI: 10.1021/jo301057j] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Elena Soriano
- Instituto de Química Orgánica General (CSIC), Juan de la Cierva, 3,
28006-Madrid, Spain
| | - José Marco-Contelles
- Instituto de Química Orgánica General (CSIC), Juan de la Cierva, 3,
28006-Madrid, Spain
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42
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Petit A, Flygare J, Miller AT, Winkel G, Ess DH. Transition-State Metal Aryl Bond Stability Determines Regioselectivity in Palladium Acetate Mediated C–H Bond Activation of Heteroarenes. Org Lett 2012; 14:3680-3. [DOI: 10.1021/ol301521n] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alban Petit
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Josh Flygare
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Alex T. Miller
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Gerrit Winkel
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Daniel H. Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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43
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Jašíková L, Hanikýřová E, Škríba A, Jašík J, Roithová J. Metal-assisted Lossen Rearrangement. J Org Chem 2012; 77:2829-36. [DOI: 10.1021/jo300031f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lucie Jašíková
- Department of Organic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843
Prague 2, Czech Republic
| | - Eva Hanikýřová
- Department of Organic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843
Prague 2, Czech Republic
| | - Anton Škríba
- Department of Organic Chemistry,
Faculty of Science, Charles University in Prague, Hlavova 2030/8, 12843
Prague 2, Czech Republic
| | - Juraj Jašík
- 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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44
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Jašíková L, Roithová J. Interaction of the Gold(I) Cation Au(PMe3)+ with Unsaturated Hydrocarbons. Organometallics 2012. [DOI: 10.1021/om2012387] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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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45
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Gong Y, Andrews L. Matrix infrared spectroscopic and theoretical of the difluoroamino metal fluoride molecules: F2NMF (M = Cu, Ag, Au). Inorg Chem 2012; 51:667-73. [PMID: 22148354 DOI: 10.1021/ic2021758] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The difluoroamino coinage metal fluoride molecules F(2)NMF (M = Cu, Ag, Au) have been made via spontaneous reactions of coinage metals and NF(3) in solid argon and neon matrixes during sample annealing without formation of the M(NF(3)) complexes. Comparisons between the matrix infrared spectra and the density functional frequency calculations provide strong support for identification of the F(2)NMF molecules, which are found to have doublet ground states with C(2v) or near C(2v) geometries. The F(2)NCuF molecule can isomerize to the less stable FNCuF(2) isomer upon UV-visible irradiation, while no similar reactions were observed for the silver and gold species. The M-N bonds in the F(2)NMF molecules are stronger than those in the FNMF(2) isomers with the Ag-N bond being longest and weakest in both cases.
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Affiliation(s)
- Yu Gong
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, USA
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46
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Garand E, Fournier JA, Kamrath MZ, Schley ND, Crabtree RH, Johnson MA. Characterization of an activated iridium water splitting catalyst using infrared photodissociation of H2 tagged ions. Phys Chem Chem Phys 2012; 14:10109-13. [DOI: 10.1039/c2cp41490b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Zhao ZX, Wang HY, Guo YL. Studies on CH3CN-assisted decomposition of 1st Grubbs catalyst by electrospray ionization tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:3401-3410. [PMID: 22002693 DOI: 10.1002/rcm.5240] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The CH(3)CN-assisted decomposition reaction of the 1(st) Grubbs catalyst (1) was studied using electrospray ionization tandem mass spectrometry (ESI-MS/MS). We detected a series of Ru-intermediates and decomposition products by off-line and on-line ESI-MS(/MS) monitoring of the decomposition process. In particular, an on-line microreactor method was applied with ESI-MS/MS to profile the change and relationship of various Ru-intermediates by controlling the reaction within the first 30 s of its time scale. The main fast decomposition mechanism of Ru-catalyst 1 in the presence of CH(3)CN was similar to that proposed by Grubbs, and this was confirmed by detecting the (PhCH(2)PCy(3))(+) ion at m/z 371 as the major decomposition products with ESI-MS. We also studied the time evolution of the transient reactive Ru-intermediate ions step by step with ESI-MS/MS and detected the C-H bond activation products of toluene--dehydrogenated PCy(3), such as P(Cy)(2)(C(6)H(9)), P(Cy)(2)Ph--by analyzing the decomposition reaction solution by gas chromatography (GC)/MS. The mechanism of another minor decomposition pathway involving the phosphine activation of catalyst 1 was proposed on the basis of the ESI-MS(/MS) interception and characterization of the transient reactive Ru-species in the decomposition reaction solution. Finally the coordination effect of the CH(3)CN in assisting the decomposition and stabilizing the transient Ru-complexes is discussed.
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Affiliation(s)
- Zhi-Xiong Zhao
- Shanghai Mass Spectrometry Center, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, PR China
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48
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Ellis CS, Ess DH. Computational Study on the Mechanism and Selectivity of C–H Bond Activation and Dehydrogenative Functionalization in the Synthesis of Rhazinilam. J Org Chem 2011; 76:7180-5. [DOI: 10.1021/jo201234f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Corey S. Ellis
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
| | - Daniel H. Ess
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah 84602, United States
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49
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Abstract
In the last decade, we have experienced massive progress in spectroscopic methods for mass-selected ions. The aim of this tutorial review is to present action spectroscopy as a powerful tool for the investigation of ionic reaction intermediates. Examples span from ultraviolet and infrared photodissociation spectroscopy of model reaction intermediates to applications of infrared multiphoton dissociation spectroscopy (IRMPD) to intermediates directly sampled from reaction mixtures. The first example of double resonance IR-UV spectroscopy of model intermediates in an organometallic reaction is also mentioned.
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Affiliation(s)
- Jana Roithová
- Charles University in Prague, Faculty of Science, Department of Organic and Nuclear Chemistry, Hlavova 2030, 128 43 Prague 2, Czech Republic.
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50
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Fedorov A, Batiste L, Bach A, Birney DM, Chen P. Potential Energy Surface for (Retro-)Cyclopropanation: Metathesis with a Cationic Gold Complex. J Am Chem Soc 2011; 133:12162-71. [DOI: 10.1021/ja2041699] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alexey Fedorov
- Laboratorium für Organische Chemie, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH−8093 Zürich, Switzerland
| | - Laurent Batiste
- Laboratorium für Organische Chemie, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH−8093 Zürich, Switzerland
| | - Andreas Bach
- Laboratorium für Organische Chemie, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH−8093 Zürich, Switzerland
| | - David M. Birney
- Laboratorium für Organische Chemie, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH−8093 Zürich, Switzerland
| | - Peter Chen
- Laboratorium für Organische Chemie, ETH Zürich, Wolfgang-Pauli-Strasse 10, CH−8093 Zürich, Switzerland
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