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Montgomery CL, Amtawong J, Jordan AM, Kurtz DA, Dempsey JL. Proton transfer kinetics of transition metal hydride complexes and implications for fuel-forming reactions. Chem Soc Rev 2023; 52:7137-7169. [PMID: 37750006 DOI: 10.1039/d3cs00355h] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Proton transfer reactions involving transition metal hydride complexes are prevalent in a number of catalytic fuel-forming reactions, where the proton transfer kinetics to or from the metal center can have significant impacts on the efficiency, selectivity, and stability associated with the catalytic cycle. This review correlates the often slow proton transfer rate constants of transition metal hydride complexes to their electronic and structural descriptors and provides perspective on how to exploit these parameters to control proton transfer kinetics to and from the metal center. A toolbox of techniques for experimental determination of proton transfer rate constants is discussed, and case studies where proton transfer rate constant determination informs fuel-forming reactions are highlighted. Opportunities for extending proton transfer kinetic measurements to additional systems are presented, and the importance of synergizing the thermodynamics and kinetics of proton transfer involving transition metal hydride complexes is emphasized.
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Affiliation(s)
- Charlotte L Montgomery
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599-3290, USA.
| | - Jaruwan Amtawong
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599-3290, USA.
| | - Aldo M Jordan
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599-3290, USA.
| | - Daniel A Kurtz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599-3290, USA.
| | - Jillian L Dempsey
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, 27599-3290, USA.
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2
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Osipova ES, Kovalenko SA, Gulyaeva ES, Kireev NV, Pavlov AA, Filippov OA, Danshina AA, Valyaev DA, Canac Y, Shubina ES, Belkova NV. The Dichotomy of Mn-H Bond Cleavage and Kinetic Hydricity of Tricarbonyl Manganese Hydride Complexes. Molecules 2023; 28:molecules28083368. [PMID: 37110601 PMCID: PMC10143952 DOI: 10.3390/molecules28083368] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 04/04/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Acid-base characteristics (acidity, pKa, and hydricity, ΔG°H- or kH-) of metal hydride complexes could be a helpful value for forecasting their activity in various catalytic reactions. Polarity of the M-H bond may change radically at the stage of formation of a non-covalent adduct with an acidic/basic partner. This stage is responsible for subsequent hydrogen ion (hydride or proton) transfer. Here, the reaction of tricarbonyl manganese hydrides mer,trans-[L2Mn(CO)3H] (1; L = P(OPh)3, 2; L = PPh3) and fac-[(L-L')Mn(CO)3H] (3, L-L' = Ph2PCH2PPh2 (dppm); 4, L-L' = Ph2PCH2-NHC) with organic bases and Lewis acid (B(C6F5)3) was explored by spectroscopic (IR, NMR) methods to find the conditions for the Mn-H bond repolarization. Complex 1, bearing phosphite ligands, features acidic properties (pKa 21.3) but can serve also as a hydride donor (ΔG≠298K = 19.8 kcal/mol). Complex 3 with pronounced hydride character can be deprotonated with KHMDS at the CH2-bridge position in THF and at the Mn-H position in MeCN. The kinetic hydricity of manganese complexes 1-4 increases in the order mer,trans-[(P(OPh)3)2Mn(CO)3H] (1) < mer,trans-[(PPh3)2Mn(CO)3H] (2) ≈ fac-[(dppm)Mn(CO)3H] (3) < fac-[(Ph2PCH2NHC)Mn(CO)3H] (4), corresponding to the gain of the phosphorus ligand electron-donor properties.
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Affiliation(s)
- Elena S Osipova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
| | - Sergey A Kovalenko
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
| | - Ekaterina S Gulyaeva
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
- LCC-CNRS, Université de Toulouse, CNRS, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, France
| | - Nikolay V Kireev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
| | - Alexander A Pavlov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
- Center of National Technological Initiative, Bauman Moscow State Technical University, 2nd Baumanskaya Str., 5, 105005 Moscow, Russia
| | - Oleg A Filippov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
| | - Anastasia A Danshina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
- Moscow Institute of Physics and Technology, Institutskiy per., 9, 141700 Dolgoprudny, Russia
| | - Dmitry A Valyaev
- LCC-CNRS, Université de Toulouse, CNRS, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, France
| | - Yves Canac
- LCC-CNRS, Université de Toulouse, CNRS, 205 Route de Narbonne, CEDEX 4, 31077 Toulouse, France
| | - Elena S Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
| | - Natalia V Belkova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28, Vavilova Str., 119334 Moscow, Russia
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3
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Belkova NV, Filippov OA, Osipova ES, Safronov SV, Epstein LM, Shubina ES. Influence of phosphine (pincer) ligands on the transition metal hydrides reactivity. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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4
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Osipova ES, Gulyaeva ES, Gutsul EI, Kirkina VA, Pavlov AA, Nelyubina YV, Rossin A, Peruzzini M, Epstein LM, Belkova NV, Filippov OA, Shubina ES. Bifunctional activation of amine-boranes by the W/Pd bimetallic analogs of "frustrated Lewis pairs". Chem Sci 2021; 12:3682-3692. [PMID: 34163642 PMCID: PMC8179527 DOI: 10.1039/d0sc06114j] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/15/2021] [Indexed: 11/29/2022] Open
Abstract
The reaction between basic [(PCP)Pd(H)] (PCP = 2,6-(CH2P(t-C4H9)2)2C6H4) and acidic [LWH(CO)3] (L = Cp (1a), Tp (1b); Cp = η5-cyclopentadienyl, Tp = κ3-hydridotris(pyrazolyl)borate) leads to the formation of bimolecular complexes [LW(CO)2(μ-CO)⋯Pd(PCP)] (4a, 4b), which catalyze amine-borane (Me2NHBH3, t BuNH2BH3) dehydrogenation. The combination of variable-temperature (1H, 31P{1H}, 11B NMR and IR) spectroscopies and computational (ωB97XD/def2-TZVP) studies reveal the formation of an η1-borane complex [(PCP)Pd(Me2NHBH3)]+[LW(CO3)]- (5) in the first step, where a BH bond strongly binds palladium and an amine group is hydrogen-bonded to tungsten. The subsequent intracomplex proton transfer is the rate-determining step, followed by an almost barrierless hydride transfer. Bimetallic species 4 are easily regenerated through hydrogen evolution in the reaction between two hydrides.
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Affiliation(s)
- Elena S Osipova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Ekaterina S Gulyaeva
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Evgenii I Gutsul
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Vladislava A Kirkina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Alexander A Pavlov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Yulia V Nelyubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Andrea Rossin
- Istituto di Chimica dei Composti Organometallici - Consiglio Nazionale delle Ricerche (ICCOM - CNR) Via Madonna del Piano 10 50019 Sesto Fiorentino Italy
| | - Maurizio Peruzzini
- Istituto di Chimica dei Composti Organometallici - Consiglio Nazionale delle Ricerche (ICCOM - CNR) Via Madonna del Piano 10 50019 Sesto Fiorentino Italy
| | - Lina M Epstein
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Natalia V Belkova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Oleg A Filippov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
| | - Elena S Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS) Vavilova Str. 28 119991 Moscow Russia
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5
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Dhungana TP, Hashimoto H, Ray M, Tobita H. Synthesis of a Molybdenum Hydrido(hydrogermylene) Complex and Its Conversion to a Germylyne Complex: Another Route through Dehydrogenation with Nitriles. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00518] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tara Prasad Dhungana
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Hisako Hashimoto
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Mausumi Ray
- Surface Engineering, Research and Development, Tata Steel Limited, Jamshedpur 831007, India
| | - Hiromi Tobita
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
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6
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Kirkina VA, Silantyev GA, De-Botton S, Filippov OA, Titova EM, Pavlov AA, Belkova NV, Epstein LM, Gelman D, Shubina ES. Stereoisomerism as an Origin of Different Reactivities of Ir(III) PC(sp 3)P Pincer Catalysts. Inorg Chem 2020; 59:11962-11975. [PMID: 32806008 DOI: 10.1021/acs.inorgchem.0c00797] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two stereoisomers of pentacoordinate iridium(III) hydridochloride with triptycene-based PC(sp3)P pincer ligand (1,8-bis(diisopropylphosphino)triptycene), 1 and 2, differ by the orientation of hydride ligand relative to the bridgehead ring of triptycene. According to DFT/B3PW91/def2-TZVP calculations performed, an equatorial Cl ligand can relatively easily change its position in 1, whereas that is not the case in 2. Both complexes 1 and 2 readily bind the sixth ligand to protect the empty coordination site. Variable temperature spectroscopic (NMR, IR, and UV-visible) studies show the existence of two isomers of hexacoordinate complexes 1·MeCN, 2·MeCN, and 2·Py with acetonitrile or pyridine coordinated trans to hydride or trans to metalated C(sp3), whereas only the equatorial isomer is found for 1·Py. These complexes are stabilized by various intramolecular noncovalent C-H···Cl interactions that are affected by the rotation of isopropyls or pyridine. The substitution of MeCN by pyridine is slow yielding axial Py complexes as kinetic products and the equatorial Py complexes as thermodynamic products with faster reactions of 1·L. Ultimately, that explains the higher activity of 1 in the catalytic alkenes' isomerization observed for allylbenzene, 1-octene, and pent-4-enenitrile, which proceeds as an insertion/elimination sequence rather than through the allylic mechanism.
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Affiliation(s)
- Vladislava A Kirkina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Gleb A Silantyev
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Sophie De-Botton
- Institute of Chemistry, The Hebrew University, Edmond Safra Campus, Givat Ram, 91904 Jerusalem, Israel
| | - Oleg A Filippov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Ekaterina M Titova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Alexander A Pavlov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Natalia V Belkova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Lina M Epstein
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Dmitri Gelman
- Institute of Chemistry, The Hebrew University, Edmond Safra Campus, Givat Ram, 91904 Jerusalem, Israel
| | - Elena S Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
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7
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Voronova ED, Golub IE, Pavlov A, Belkova NV, Filippov OA, Epstein LM, Shubina ES. Dichotomous Si-H Bond Activation by Alkoxide and Alcohol in Base-Catalyzed Dehydrocoupling of Silanes. Inorg Chem 2020; 59:12240-12251. [PMID: 32805120 DOI: 10.1021/acs.inorgchem.0c01293] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The activation of silanes in dehydrogenative coupling with alcohols under general base catalysis was studied experimentally (using multinuclear NMR, IR, and UV-visible spectroscopies) and computationally (at DFT M06/6-311++G(d,p) theory level) on the example of Ph4-nSiHn (n = 1-3) interaction with (CF3)2CHOH in the presence of Et3N. The effect of the phenyl groups' number and H- substitution by the electron-withdrawing (CF3)2CHO- group on Si-H bond hydricity (quantified as hydride-donating ability, HDA) and Lewis acidity of silicon atom (characterized by maxima of molecular electrostatic potential) was accessed. Our results show the coordination of Lewis base (Y = Me3N, ROH, OR-) leads to the increased hydricity of pentacoordinate hypervalent Ph4-nSi(Y)Hn complexes and a decrease of the reaction barrier for H2 release. The formation of tertiary complexes [Ph4-nSi(Y)Hn]···HOR is a critical prerequisite for the dehydrocoupling with alkoxides being ideal activators. The latter can be external or internal, generated by in situ HOR deprotonation. The mutual effect of tetrel interaction and dihydrogen bonding in tertiary complexes (RO-)Ph4-nSiHn···HOR leads to dichotomous activation of Si-H bond promoting the proton-hydride transfer and H2 release.
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Affiliation(s)
- Evgenia D Voronova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28 Vavilova St., 119991 Moscow, Russia
| | - Igor E Golub
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28 Vavilova St., 119991 Moscow, Russia
| | - Alexander Pavlov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28 Vavilova St., 119991 Moscow, Russia
| | - Natalia V Belkova
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28 Vavilova St., 119991 Moscow, Russia
| | - Oleg A Filippov
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28 Vavilova St., 119991 Moscow, Russia.,Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 16/10 Miklukho-Maklay Str., Moscow 117997, Russia
| | - Lina M Epstein
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28 Vavilova St., 119991 Moscow, Russia
| | - Elena S Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences (INEOS RAS), 28 Vavilova St., 119991 Moscow, Russia
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8
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Shenderovich IG, Denisov GS. Adduct under Field-A Qualitative Approach to Account for Solvent Effect on Hydrogen Bonding. Molecules 2020; 25:molecules25030436. [PMID: 31973045 PMCID: PMC7037398 DOI: 10.3390/molecules25030436] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 02/08/2023] Open
Abstract
The location of a mobile proton in acid-base complexes in aprotic solvents can be predicted using a simplified Adduct under Field (AuF) approach, where solute–solvent effects on the geometry of hydrogen bond are simulated using a fictitious external electric field. The parameters of the field have been estimated using experimental data on acid-base complexes in CDF3/CDClF2. With some limitations, they can be applied to the chemically similar CHCl3 and CH2Cl2. The obtained data indicate that the solute–solvent effects are critically important regardless of the type of complexes. The temperature dependences of the strength and fluctuation rate of the field explain the behavior of experimentally measured parameters.
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Affiliation(s)
- Ilya G. Shenderovich
- Institute of Organic Chemistry, University of Regensburg, Universitaetstrasse 31, 93053 Regensburg, Germany
- Correspondence: ; Tel.:+49-941-9434027
| | - Gleb S. Denisov
- Department of Physics, Saint-Petersburg State University, 198504 Saint-Petersburg, Russia;
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9
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Hydride, alkyl and carbyne derivatives of the unsaturated heterometallic anion [MoWCp2(μ-PCy2)(μ-CO)2]−. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.04.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Sagan F, Mitoraj MP. Kinetic and Potential Energy Contributions to a Chemical Bond from the Charge and Energy Decomposition Scheme of Extended Transition State Natural Orbitals for Chemical Valence. J Phys Chem A 2019; 123:4616-4622. [PMID: 31058501 DOI: 10.1021/acs.jpca.9b01420] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This work provides novel physical insight into the nature of a chemical bond by exploring qualitative and quantitative relations between the natural orbitals for chemical valence (NOCV)-based deformation density bonding channels Δρ i ( i = σ, π, δ, etc.) and the corresponding kinetic Δ Ti and potential energy Δ Vi contributions within the charge and energy decomposition scheme ETS-NOCV implemented in the Kohn-Sham-based Amsterdam Density Functional (ADF) package. It is determined that interfragment dative and covalent-type electron charge reorganizations upon formation of a series of strong and weak bonds employing main-group elements are due to lowering of the negative kinetic energy contributions, as opposed to the intrafragment polarizations (e.g., hyperconjugations in ethane), which are, in contrary, driven by the potential energy (electrostatic) component. Complementary, formation of π-contributions in N2 is accompanied by lowering of both kinetic and potential energy constituents. Remarkably, well-known globally stabilizing back-donation (M → ligand, where M is a transition metal) and donation (ligand → M) processes, ubiquitous in organometallic species, have been discovered for the first time to be driven by the opposite Δ Ti/Δ Vi mechanisms, namely, the former contribution is associated with the negative kinetic term (which outweighs the positive potential energy), whereas the latter charge delocalization into electrophilic transition metals leads to an attractive electrostatic stabilization (and positive kinetic energy).
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Affiliation(s)
- Filip Sagan
- Department of Theoretical Chemistry, Faculty of Chemistry , Jagiellonian University , R. Gronostajowa 2 , 30-387 Krakow , Poland
| | - Mariusz P Mitoraj
- Department of Theoretical Chemistry, Faculty of Chemistry , Jagiellonian University , R. Gronostajowa 2 , 30-387 Krakow , Poland
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11
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Sahoo DK, Jena S, Dutta J, Rana A, Biswal HS. Nature and Strength of M-H···S and M-H···Se (M = Mn, Fe, & Co) Hydrogen Bond. J Phys Chem A 2019; 123:2227-2236. [PMID: 30802055 DOI: 10.1021/acs.jpca.8b12003] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The significance of dispersion contribution in the formation of strong hydrogen bonds (H-bonds) can no more be ignored. It was illustrated that less electronegative and electropositive H-bond acceptors such as S, Se, and Te are also capable of forming strong N-H···Y H-bonds, mostly due to the high polarizabilities of H-bond acceptor atoms. Herein, for the first time, we report the evidence of formation of nonconventional M-H···Y H-bonds between metal hydrides (M-H, M = Mn, Fe, Co) and chalcogen H-bond acceptors (Y = O, S, or Se). The nature and the strength of unusual M-H···Y H-bonds were revealed by several quantum chemical calculations and H-bond descriptors. The structural parameters, electron density topology, donor-acceptor natural bond orbital (NBO) interaction energies, and spectroscopic observables such as M-H stretching frequencies and 1H chemical shifts are well-correlated to manifest the existence and strength of M-H···Y H-bonding. The M-H···Y H-bonds are dispersive in nature, and the computed H-bond energies are found to be in the range from ∼5 to 30 kJ/mol, which can be compared to those of the conventional H-bonds such as O-H···O, N-H···O, and N-H···O═C H-bonds, etc.
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Affiliation(s)
- Dipak Kumar Sahoo
- School of Chemical Sciences , National Institute of Science Education and Research , 752050 Bhubaneswar , India.,Homi Bhabha National Institute , Training School Complex , Anushakti Nagar, Mumbai 400094 , India
| | - Subhrakant Jena
- School of Chemical Sciences , National Institute of Science Education and Research , 752050 Bhubaneswar , India.,Homi Bhabha National Institute , Training School Complex , Anushakti Nagar, Mumbai 400094 , India
| | - Juhi Dutta
- School of Chemical Sciences , National Institute of Science Education and Research , 752050 Bhubaneswar , India.,Homi Bhabha National Institute , Training School Complex , Anushakti Nagar, Mumbai 400094 , India
| | - Abhijit Rana
- School of Chemical Sciences , National Institute of Science Education and Research , 752050 Bhubaneswar , India.,Homi Bhabha National Institute , Training School Complex , Anushakti Nagar, Mumbai 400094 , India
| | - Himansu S Biswal
- School of Chemical Sciences , National Institute of Science Education and Research , 752050 Bhubaneswar , India.,Homi Bhabha National Institute , Training School Complex , Anushakti Nagar, Mumbai 400094 , India
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12
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Liao Q, Liu T, Johnson SI, Klug CM, Wiedner ES, Morris Bullock R, DuBois DL. Evaluation of attractive interactions in the second coordination sphere of iron complexes containing pendant amines. Dalton Trans 2019; 48:4867-4878. [PMID: 30882832 DOI: 10.1039/c9dt00708c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ability of different ligands to attract a pendant amine is studied in a series of iron complexes.
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Affiliation(s)
- Qian Liao
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Tianbiao Liu
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Samantha I. Johnson
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Christina M. Klug
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Eric S. Wiedner
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - R. Morris Bullock
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
| | - Daniel L. DuBois
- Center for Molecular Electrocatalysis
- Pacific Northwest National Laboratory
- Richland
- USA
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13
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Huang T, Rountree ES, Traywick AP, Bayoumi M, Dempsey JL. Switching between Stepwise and Concerted Proton-Coupled Electron Transfer Pathways in Tungsten Hydride Activation. J Am Chem Soc 2018; 140:14655-14669. [PMID: 30362720 DOI: 10.1021/jacs.8b07102] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Catalytic processes to generate (or oxidize) fuels such as hydrogen are underpinned by multiple proton-coupled electron transfer (PCET) steps that are associated with the formation or activation of metal-hydride bonds. Fully understanding the detailed PCET mechanisms of metal hydride transformations holds promise for the rational design of energy-efficient catalysis. Here we investigate the detailed PCET mechanisms for the activation of the transition metal hydride complex CpW(CO)2(PMe3)H (Cp = cyclopentadienyl) using stopped-flow rapid mixing coupled with time-resolved optical spectroscopy. We reveal that all three limiting PCET pathways can be accessed by changing the free energy for elementary proton, electron, and proton-electron transfers through the choice of base and oxidant, with the concerted pathway occurring exclusively as a secondary parallel route. Through detailed kinetics analysis, we define free energy relationships for the kinetics of elementary reaction steps, which provide insight into the factors influencing reaction mechanism. Rate constants for proton transfer processes in the limiting stepwise pathways reveal a large reorganization energy associated with protonation/deprotonation of the metal center (λ = 1.59 eV) and suggest that sluggish proton transfer kinetics hinder access to a concerted route. Rate constants for concerted PCET indicate that the concerted routes are asynchronous. Additionally, through quantification of the relative contributions of parallel stepwise and concerted mechanisms toward net product formation, the influence of various reaction parameters on reactivity are identified. This work underscores the importance of understanding the PCET mechanism for controlling metal hydride reactivity, which could lead to superior catalyst design for fuel production and oxidation.
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Affiliation(s)
- Tao Huang
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
| | - Eric S Rountree
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
| | - Andrew P Traywick
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
| | - Magd Bayoumi
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
| | - Jillian L Dempsey
- Department of Chemistry , University of North Carolina at Chapel Hill , Chapel Hill , North Carolina 27599-3290 , United States
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14
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Belkova NV, Filippov OA, Shubina ES. Z−H Bond Activation in (Di)hydrogen Bonding as a Way to Proton/Hydride Transfer and H2
Evolution. Chemistry 2017; 24:1464-1470. [DOI: 10.1002/chem.201704203] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Natalia V. Belkova
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilova str. 119991 Moscow Russia
| | - Oleg A. Filippov
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilova str. 119991 Moscow Russia
| | - Elena S. Shubina
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28 Vavilova str. 119991 Moscow Russia
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15
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Ceballos BM, Tsay C, Yang JY. CO2 reduction or HCO2− oxidation? Solvent-dependent thermochemistry of a nickel hydride complex. Chem Commun (Camb) 2017. [DOI: 10.1039/c7cc02511d] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The hydricity (ΔGH−) of a newly synthesized nickel hydride was experimentally determined in acetonitrile (50.6 kcal mol−1), dimethyl sulfoxide (47.1 kcal mol−1), and water (22.8 kcal mol−1).
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Affiliation(s)
| | - Charlene Tsay
- Department of Chemistry
- University of California
- Irvine
- USA
| | - Jenny Y. Yang
- Department of Chemistry
- University of California
- Irvine
- USA
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16
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Liu M, Li Q, Scheiner S. Comparison of tetrel bonds in neutral and protonated complexes of pyridineTF3and furanTF3(T = C, Si, and Ge) with NH3. Phys Chem Chem Phys 2017; 19:5550-5559. [DOI: 10.1039/c6cp07531b] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Protonation not only changes the primary interaction mode between α/β-furanCF3/p-PyCF3and NH3but also prominently enhances the strength of the Si/Ge⋯N tetrel bond.
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Affiliation(s)
- Mingxiu Liu
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
| | - Qingzhong Li
- The Laboratory of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Yantai University
- Yantai 264005
- People's Republic of China
| | - Steve Scheiner
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
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17
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Belkova NV, Epstein LM, Filippov OA, Shubina ES. Hydrogen and Dihydrogen Bonds in the Reactions of Metal Hydrides. Chem Rev 2016; 116:8545-87. [PMID: 27285818 DOI: 10.1021/acs.chemrev.6b00091] [Citation(s) in RCA: 148] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The dihydrogen bond-an interaction between a transition-metal or main-group hydride (M-H) and a protic hydrogen moiety (H-X)-is arguably the most intriguing type of hydrogen bond. It was discovered in the mid-1990s and has been intensively explored since then. Herein, we collate up-to-date experimental and computational studies of the structural, energetic, and spectroscopic parameters and natures of dihydrogen-bonded complexes of the form M-H···H-X, as such species are now known for a wide variety of hydrido compounds. Being a weak interaction, dihydrogen bonding entails the lengthening of the participating bonds as well as their polarization (repolarization) as a result of electron density redistribution. Thus, the formation of a dihydrogen bond allows for the activation of both the MH and XH bonds in one step, facilitating proton transfer and preparing these bonds for further transformations. The implications of dihydrogen bonding in different stoichiometric and catalytic reactions, such as hydrogen exchange, alcoholysis and aminolysis, hydrogen evolution, hydrogenation, and dehydrogenation, are discussed.
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Affiliation(s)
- Natalia V Belkova
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov Street 28, 119991 Moscow, Russia
| | - Lina M Epstein
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov Street 28, 119991 Moscow, Russia
| | - Oleg A Filippov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov Street 28, 119991 Moscow, Russia
| | - Elena S Shubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences , Vavilov Street 28, 119991 Moscow, Russia
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18
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Saha B, Bhattacharyya PK. Adsorption of amino acids on boron and/or nitrogen doped functionalized graphene: A Density Functional Study. COMPUT THEOR CHEM 2016. [DOI: 10.1016/j.comptc.2016.04.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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19
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Abstract
Transition metal hydride complexes are usually amphoteric, not only acting as hydride donors, but also as Brønsted-Lowry acids. A simple additive ligand acidity constant equation (LAC for short) allows the estimation of the acid dissociation constant Ka(LAC) of diamagnetic transition metal hydride and dihydrogen complexes. It is remarkably successful in systematizing diverse reports of over 450 reactions of acids with metal complexes and bases with metal hydrides and dihydrogen complexes, including catalytic cycles where these reactions are proposed or observed. There are links between pKa(LAC) and pKa(THF), pKa(DCM), pKa(MeCN) for neutral and cationic acids. For the groups from chromium to nickel, tables are provided that order the acidity of metal hydride and dihydrogen complexes from most acidic (pKa(LAC) -18) to least acidic (pKa(LAC) 50). Figures are constructed showing metal acids above the solvent pKa scales and organic acids below to summarize a large amount of information. Acid-base features are analyzed for catalysts from chromium to gold for ionic hydrogenations, bifunctional catalysts for hydrogen oxidation and evolution electrocatalysis, H/D exchange, olefin hydrogenation and isomerization, hydrogenation of ketones, aldehydes, imines, and carbon dioxide, hydrogenases and their model complexes, and palladium catalysts with hydride intermediates.
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Affiliation(s)
- Robert H Morris
- Department of Chemistry, University of Toronto , 80 Saint George Street, Toronto, Ontario M5S 3H6, Canada
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20
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Osipova ES, Belkova NV, Epstein LM, Filippov OA, Kirkina VA, Titova EM, Rossin A, Peruzzini M, Shubina ES. Dihydrogen Bonding and Proton Transfer from MH and OH Acids to Group 10 Metal Hydrides [(tBuPCP)MH] [tBuPCP = κ3-2,6-(tBu2PCH2)2C6H3; M = Ni, Pd]. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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21
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Bourrez M, Steinmetz R, Ott S, Gloaguen F, Hammarström L. Concerted proton-coupled electron transfer from a metal-hydride complex. Nat Chem 2015; 7:140-5. [PMID: 25615667 DOI: 10.1038/nchem.2157] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 12/08/2014] [Indexed: 11/09/2022]
Abstract
Metal hydrides are key intermediates in the catalytic reduction of protons and CO2 as well as in the oxidation of H2. In these reactions, electrons and protons are transferred to or from separate acceptors or donors in bidirectional protoncoupled electron transfer (PCET) steps. The mechanistic interpretation of PCET reactions of metal hydrides has focused on the stepwise transfer of electrons and protons. A concerted transfer may, however, occur with a lower reaction barrier and therefore proceed at higher catalytic rates. Here we investigate the feasibility of such a reaction by studying the oxidation–deprotonation reactions of a tungsten hydride complex. The rate dependence on the driving force for both electron transfer and proton transfer—employing different combinations of oxidants and bases—was used to establish experimentally the concerted, bidirectional PCET of a metal-hydride species. Consideration of the findings presented here in future catalyst designs may lead to more-efficient catalysts.
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Affiliation(s)
- Marc Bourrez
- UMR 6521, Centre National de la Recherche Scientifique, Université de Bretagne Occidentale, 6 Avenue Le Gorgeu, 29238 Brest, France
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22
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Labed I, Labed A, Sun Y, Jiang F, Achard M, Dérien S, Kabouche Z, Bruneau C. [Cp*Ru]-catalyzed selective coupling/hydrogenation. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01303d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Selective coupling and hydrogenation catalyzed by [Cp*Ru] have been achieved affording valuable polyfunctionalized cyclic enamide derivatives.
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Affiliation(s)
- I. Labed
- University of Constantine 1
- Department of Chemistry
- Laboratory of Therapeutic Substances Obtention (LOST)
- Chaabet Ersas Campus
- 25000 Constantine
| | - A. Labed
- University of Constantine 1
- Department of Chemistry
- Laboratory of Therapeutic Substances Obtention (LOST)
- Chaabet Ersas Campus
- 25000 Constantine
| | - Y. Sun
- UMR6226 CNRS
- Institut des Sciences Chimiques de Rennes
- Université de Rennes 1
- OMC: Organometallics: Materials and Catalysis
- Campus de Beaulieu
| | - F. Jiang
- UMR6226 CNRS
- Institut des Sciences Chimiques de Rennes
- Université de Rennes 1
- OMC: Organometallics: Materials and Catalysis
- Campus de Beaulieu
| | - M. Achard
- UMR6226 CNRS
- Institut des Sciences Chimiques de Rennes
- Université de Rennes 1
- OMC: Organometallics: Materials and Catalysis
- Campus de Beaulieu
| | - S. Dérien
- UMR6226 CNRS
- Institut des Sciences Chimiques de Rennes
- Université de Rennes 1
- OMC: Organometallics: Materials and Catalysis
- Campus de Beaulieu
| | - Z. Kabouche
- University of Constantine 1
- Department of Chemistry
- Laboratory of Therapeutic Substances Obtention (LOST)
- Chaabet Ersas Campus
- 25000 Constantine
| | - C. Bruneau
- UMR6226 CNRS
- Institut des Sciences Chimiques de Rennes
- Université de Rennes 1
- OMC: Organometallics: Materials and Catalysis
- Campus de Beaulieu
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23
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Chierotti MR, Rossin A, Gobetto R, Peruzzini M. Interaction between a Transition-Metal Fluoride and a Transition-Metal Hydride: Water-Mediated Hydrofluoric Acid Evolution Following Fluoride Solvation. Inorg Chem 2013; 52:12616-23. [DOI: 10.1021/ic401798b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Michele R. Chierotti
- Dipartimento
di Chimica, Università di Torino, Via Giuria 7, 10125 Torino, Italy
- NIS Centre of Excellence, Via Quarello 11, 10135 Torino, Italy
| | - Andrea Rossin
- Consiglio
Nazionale delle Ricerche, Istituto di Chimica dei Composti Organometallici (ICCOM-CNR), Via Madonna del Piano 10, Sesto Fiorentino, 50019 Florence, Italy
| | - Roberto Gobetto
- Dipartimento
di Chimica, Università di Torino, Via Giuria 7, 10125 Torino, Italy
- Consiglio
Nazionale delle Ricerche, Istituto di Chimica dei Composti Organometallici (ICCOM-CNR), Via Madonna del Piano 10, Sesto Fiorentino, 50019 Florence, Italy
| | - Maurizio Peruzzini
- Consiglio
Nazionale delle Ricerche, Istituto di Chimica dei Composti Organometallici (ICCOM-CNR), Via Madonna del Piano 10, Sesto Fiorentino, 50019 Florence, Italy
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24
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Roselló-Merino M, López-Serrano J, Conejero S. Dehydrocoupling Reactions of Dimethylamine-Borane by Pt(II) Complexes: A New Mechanism Involving Deprotonation of Boronium Cations. J Am Chem Soc 2013; 135:10910-3. [DOI: 10.1021/ja404655v] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marta Roselló-Merino
- Instituto
de Investigaciones Químicas, Departamento
de Química Inorgánica, CSIC and Universidad de Sevilla, Sevilla, Spain
| | - Joaquín López-Serrano
- Instituto
de Investigaciones Químicas, Departamento
de Química Inorgánica, CSIC and Universidad de Sevilla, Sevilla, Spain
| | - Salvador Conejero
- Instituto
de Investigaciones Químicas, Departamento
de Química Inorgánica, CSIC and Universidad de Sevilla, Sevilla, Spain
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25
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Structural and spectroscopic study of tripeptide/layered double hydroxide hybrids. J Colloid Interface Sci 2013; 394:564-72. [DOI: 10.1016/j.jcis.2012.11.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 11/06/2012] [Accepted: 11/07/2012] [Indexed: 11/23/2022]
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26
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Filippov OA, Belkova NV, Epstein LM, Lledos A, Shubina ES. Directionality of Dihydrogen Bonds: The Role of Transition Metal Atoms. Chemphyschem 2012; 13:2677-87. [DOI: 10.1002/cphc.201200097] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 04/19/2012] [Indexed: 11/11/2022]
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27
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Wang X, Weigl C, Doyle MP. Solvent enhancement of reaction selectivity: a unique property of cationic chiral dirhodium carboxamidates. J Am Chem Soc 2011; 133:9572-9. [PMID: 21591747 PMCID: PMC3116040 DOI: 10.1021/ja202676a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
1,3-Dipolar cycloaddition reactions of nitrones with α,β-unsaturated aldehydes catalyzed by a cationic chiral dirhodium(II,III) carboxamidate with (R)-menthyl (S)-2-oxopyrrolidine-5-carboxylate ligands in toluene increase reaction rates, give optimum regioselectivities, and enhance stereoselectivities compared to the same reactions performed in traditionally used halocarbon solvents. Rate and enantioselectivity enhancements were also obtained in hetero-Diels-Alder and carbonyl-ene reactions performed in toluene over those obtained in dichloromethane using the diastereomeric chiral cationic dirhodium(II,III) carboxamidate with (S)-menthyl (S)-2-oxopyrrolidine-5-carboxylate ligands. These enhancements are attributed to diminished or absent association of toluene with the catalyst which lessens the relative importance of the uncatalyzed background reaction, and they may also be a consequence of different coordination angles for aldehyde association with rhodium in the different solvent environments. Overall, the enhancement of reaction rates and selectivities with cationic chiral dirhodium(II,III) carboxamidates in toluene suggests broad applications for them in Lewis acid catalyzed reactions.
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Affiliation(s)
- Xiaochen Wang
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Carolin Weigl
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Michael P. Doyle
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
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28
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Valyaev DA, Brousses R, Lugan N, Fernández I, Sierra MA. Do ν(CO) Stretching Frequencies in Metal Carbonyl Complexes Unequivocally Correlate with the Intrinsic Electron-Donicity of Ancillary Ligands? Chemistry 2011; 17:6602-5. [DOI: 10.1002/chem.201100651] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2011] [Indexed: 11/11/2022]
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29
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Levina VA, Rossin A, Belkova NV, Chierotti MR, Epstein LM, Filippov OA, Gobetto R, Gonsalvi L, Lledós A, Shubina ES, Zanobini F, Peruzzini M. Acid-Base Interaction between Transition-Metal Hydrides: Dihydrogen Bonding and Dihydrogen Evolution. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201005274] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Levina VA, Rossin A, Belkova NV, Chierotti MR, Epstein LM, Filippov OA, Gobetto R, Gonsalvi L, Lledós A, Shubina ES, Zanobini F, Peruzzini M. Acid-Base Interaction between Transition-Metal Hydrides: Dihydrogen Bonding and Dihydrogen Evolution. Angew Chem Int Ed Engl 2010; 50:1367-70. [DOI: 10.1002/anie.201005274] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 11/18/2010] [Indexed: 11/10/2022]
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