1
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Newman-Stonebraker SH, Gerard TJ, Holland PL. Opportunities for Insight into the Mechanism of Efficient CO 2/CO Interconversion at a Nickel-Iron Cluster in CO Dehydrogenase. Chem 2024; 10:1655-1667. [PMID: 38966253 PMCID: PMC11221784 DOI: 10.1016/j.chempr.2024.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2024]
Abstract
The reduction of CO2 with low overpotential and high selectivity is a crucial challenge in catalysis. Fortunately, natural systems have evolved enzymes that achieve this catalytic reaction very efficiently at a complex nickel-iron-sulfur cluster within carbon monoxide dehydrogenase (CODH). Extensive biochemical, crystallographic, and spectroscopic work has been done to understand the structures and mechanism involved in the catalytic cycle, which are summarized here from the perspective of mechanistic organometallic chemistry. We highlight the ambiguities in the data and suggest experiments that could lead to clearer understanding of the mechanism and structures of intermediates at the active-site cluster. These include parallel crystallography and spectroscopy, as well as the preparation of synthetic analogues that help to interpret structural and spectroscopic signatures.
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2
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Bukvic AJ, Kesselring V, Aeschlimann M, Albrecht M. Pincer Platinum(II) Hydrides: High Stability Imparted by Donor-Flexible Pyridylidene Amide Ligands and Evidence for Adduct Formation before Protonation. Inorg Chem 2023; 62:2905-2912. [PMID: 36719961 DOI: 10.1021/acs.inorgchem.2c04363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Donor-flexible ligands are an emerging class of noninnocent ligands. Their ability to adapt their donating strength toward a metal center has had numerous catalytic advantages yet has never been utilized to stabilize and isolate intermediate complexes within these processes. We demonstrate through the use of a pincer ligand containing two donor-flexible pyridylidene amide (PYA) arms in coordination with platinum(II) that this ligand adaptability revealed remarkably stable hydride and formate complexes. These are typically fleeting catalytic intermediates within formic acid dehydrogenation and CO2 hydrogenation catalytic cycles. The PYA platinum hydride complexes are indefinitely stable in air, while formate complexes show no sign of β-hydrogen elimination. This robustness allowed us to investigate hydride protonation as a seemingly simple reaction, though in-depth kinetic analysis reveals a pre-equilibrium step prior to platinum hydride protonation. This initial step has been attributed to adduct formation and is slower than the protonation, and therefore a relevant aspect when designing catalytic cycles for hydrogen release and its microscopic reverse, viz., hydrogen uptake.
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Affiliation(s)
- Alexander J Bukvic
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Vera Kesselring
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Michael Aeschlimann
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Martin Albrecht
- Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
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3
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Guillamón E, Sorribes I, Safont VS, Algarra AG, Fernández-Trujillo MJ, Pedrajas E, Llusar R, Basallote MG. Base-Free Catalytic Hydrogen Production from Formic Acid Mediated by a Cubane-Type Mo 3S 4 Cluster Hydride. Inorg Chem 2022; 61:16730-16739. [PMID: 36239439 PMCID: PMC9690164 DOI: 10.1021/acs.inorgchem.2c02540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Indexed: 11/29/2022]
Abstract
Formic acid (FA) dehydrogenation is an attractive process in the implementation of a hydrogen economy. To make this process greener and less costly, the interest nowadays is moving toward non-noble metal catalysts and additive-free protocols. Efficient protocols using earth abundant first row transition metals, mostly iron, have been developed, but other metals, such as molybdenum, remain practically unexplored. Herein, we present the transformation of FA to form H2 and CO2 through a cluster catalysis mechanism mediated by a cuboidal [Mo3S4H3(dmpe)3]+ hydride cluster in the absence of base or any other additive. Our catalyst has proved to be more active and selective than the other molybdenum compounds reported to date for this purpose. Kinetic studies, reaction monitoring, and isolation of the [Mo3S4(OCHO)3(dmpe)3]+ formate reaction intermediate, in combination with DFT calculations, have allowed us to formulate an unambiguous mechanism of FA dehydrogenation. Kinetic studies indicate that the reaction at temperatures up to 60 °C ends at the triformate complex and occurs in a single kinetic step, which can be interpreted in terms of statistical kinetics at the three metal centers. The process starts with the formation of a dihydrogen-bonded species with Mo-H···HOOCH bonds, detected by NMR techniques, followed by hydrogen release and formate coordination. Whereas this process is favored at temperatures up to 60 °C, the subsequent β-hydride elimination that allows for the CO2 release and closes the catalytic cycle is only completed at higher temperatures. The cycle also operates starting from the [Mo3S4(OCHO)3(dmpe)3]+ formate intermediate, again with preservation of the cluster integrity, which adds our proposal to the list of the infrequent cluster catalysis reaction mechanisms.
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Affiliation(s)
- Eva Guillamón
- Departament
de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071Castelló, Spain
| | - Iván Sorribes
- Departament
de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071Castelló, Spain
| | - Vicent S. Safont
- Departament
de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071Castelló, Spain
| | - Andrés G. Algarra
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Instituto de Biomoléculas
(INBIO), Facultad de Ciencias, Universidad
de Cádiz, Apartado
40, Puerto Real, 11510Cádiz, Spain
| | - M. Jesús Fernández-Trujillo
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Instituto de Biomoléculas
(INBIO), Facultad de Ciencias, Universidad
de Cádiz, Apartado
40, Puerto Real, 11510Cádiz, Spain
| | - Elena Pedrajas
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Instituto de Biomoléculas
(INBIO), Facultad de Ciencias, Universidad
de Cádiz, Apartado
40, Puerto Real, 11510Cádiz, Spain
| | - Rosa Llusar
- Departament
de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071Castelló, Spain
| | - Manuel G. Basallote
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Química Inorgánica, Instituto de Biomoléculas
(INBIO), Facultad de Ciencias, Universidad
de Cádiz, Apartado
40, Puerto Real, 11510Cádiz, Spain
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4
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Wang Q, Lan J, Liang R, Xia Y, Qin L, Chung LW, Zheng Z. New Tricks for an Old Dog: Grubbs Catalysts Enable Efficient Hydrogen Production from Aqueous-Phase Methanol Reforming. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05369] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Qian Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Jialing Lan
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Rong Liang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yihao Xia
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Lei Qin
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Lung Wa Chung
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhiping Zheng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
- Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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5
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Albinati A, Grellier M, Ollivier J, Georgiev PA. On the energetics of binding and hydride exchange in the RuH 2(H 2) 2[P(C 5H 9) 3)] 2 complex as revealed by inelastic neutron scattering and DFT studies. NEW J CHEM 2022. [DOI: 10.1039/d2nj02100e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low temperature quantum rotation of dihydrogen in RuH2(H2)2[P(C5H9)3)]2 switched to a facile hydride exchange above 150 K.
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Affiliation(s)
- A. Albinati
- CNR – ICCOM, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
- University of Milan, Milan, Italy
| | - M. Grellier
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077 Toulouse, France
- Université de Toulouse, UPS, INPT 31077 Toulouse, France
| | - J. Ollivier
- Institute Laue-Langevin, 6 rue Jules Horovitz, BP156, F-38042 Grenoble Cedex 9, Grenoble, France
| | - P. A. Georgiev
- Department of Condensed Matter Physics and Microelectronics, The University of Sofia, J. Bourchier, 5, Sofia 1164, Bulgaria
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6
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Alberico E, Leischner T, Junge H, Kammer A, Sang R, Seifert J, Baumann W, Spannenberg A, Junge K, Beller M. HCOOH disproportionation to MeOH promoted by molybdenum PNP complexes. Chem Sci 2021; 12:13101-13119. [PMID: 34745541 PMCID: PMC8513996 DOI: 10.1039/d1sc04181a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 08/31/2021] [Indexed: 12/15/2022] Open
Abstract
Molybdenum(0) complexes with aliphatic aminophosphine pincer ligands have been prepared which are competent for the disproportionation of formic acid, thus representing the first example so far reported of non-noble metal species to catalytically promote such transformation. In general, formic acid disproportionation allows for an alternative access to methyl formate and methanol from renewable resources. MeOH selectivity up to 30% with a TON of 57 could be achieved while operating at atmospheric pressure. Selectivity (37%) and catalyst performance (TON = 69) could be further enhanced when the reaction was performed under hydrogen pressure (60 bars). A plausible mechanism based on experimental evidence is proposed. Mo(0) complexes with aliphatic PNP-pincer ligands enable the first example of non-noble metal catalyzed formic acid disproportionation leading to methanol with a selectivity of up to 37% and a turnover number up to 69.![]()
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Affiliation(s)
- Elisabetta Alberico
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany .,Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche tr. La Crucca 3 07100 Sassari Italy
| | - Thomas Leischner
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
| | - Henrik Junge
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
| | - Anja Kammer
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
| | - Rui Sang
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
| | - Jenny Seifert
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
| | - Wolfgang Baumann
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
| | - Anke Spannenberg
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
| | - Kathrin Junge
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V. Albert-Einstein Straße 29a 18059 Rostock Germany
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7
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8
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Mechanistic insights into the reaction Cp2Nb(CO)H (Cp = η5-C5H5) with acetylenedicarboxylic acid (ADCA): DFT studies. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.119990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Huo S, Li X, Zeng Y, Meng L. Stereoselectivity and nonmigratory insertion mechanism of dimethylacetylene dicarboxylate into metallocene‐hydride of Cp
2
M(L)H [Cp =
η
5
‐C
5
H
5
; M = Nb, V; L = CO, P (OMe)
3
]: A DFT study. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Suhong Huo
- College of Physics Science and Information EngineeringHebei Normal University Shijiazhuang 050024 P. R. China
- Engineering collegeYanching Institute of Technology Langfang 065201 P. R. China
| | - Xiaoyan Li
- College of Chemistry and Material ScienceHebei Normal University Shijiazhuang 050024 P. R. China
| | - Yanli Zeng
- College of Chemistry and Material ScienceHebei Normal University Shijiazhuang 050024 P. R. China
| | - Lingpeng Meng
- College of Physics Science and Information EngineeringHebei Normal University Shijiazhuang 050024 P. R. China
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10
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Gu NX, Oyala PH, Peters JC. H 2 Evolution from a Thiolate-Bound Ni(III) Hydride. J Am Chem Soc 2020; 142:7827-7835. [PMID: 32249575 DOI: 10.1021/jacs.0c00712] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Terminal NiIII hydrides are proposed intermediates in proton reduction catalyzed by both molecular electrocatalysts and metalloenzymes, but well-defined examples of paramagnetic nickel hydride complexes are largely limited to bridging hydrides. Herein, we report the synthesis of an S = 1/2, terminally bound thiolate-NiIII-H complex. This species and its terminal hydride ligand in particular have been thoroughly characterized by vibrational and EPR techniques, including pulse EPR studies. Corresponding DFT calculations suggest appreciable spin leakage onto the thiolate ligand. The hyperfine coupling to the terminal hydride ligand of the thiolate-NiIII-H species is comparable to that of the hydride ligand proposed for the Ni-C hydrogenase intermediate (NiIII-H-FeII). Upon warming, the featured thiolate-NiIII-H species undergoes bimolecular reductive elimination of H2. Associated kinetic studies are discussed and compared with a structurally related FeIII-H species that has also recently been reported to undergo bimolecular H-H coupling.
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Affiliation(s)
- Nina X Gu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Paul H Oyala
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Jonas C Peters
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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11
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Lauricella M, Chiodo L, Ciccotti G, Albinati A. Ab initio accelerated molecular dynamics study of the hydride ligands in the ruthenium complex: Ru(H 2) 2H 2(P(C 5H 9) 3) 2. Phys Chem Chem Phys 2019; 21:25247-25257. [PMID: 31697300 DOI: 10.1039/c9cp03776d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The dihydrogen complex Ru(H2)2H2(P(C5H9)3)2 has been investigated, via ab initio accelerated molecular dynamics, to elucidate the H ligands dynamics and possible reaction paths for H2/H exchange. We have characterized the free energy landscape associated with the H atoms positional exchange around the Ru centre. From the free energy landscape, we have been able to estimate a barrier of 6 kcal mol-1 for the H2/H exchange process. We have also observed a trihydrogen intermediate as a passing state along some of the possible reaction pathways.
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Affiliation(s)
- Marco Lauricella
- Istituto per le Applicazioni del Calcolo IAC-CNR, Via dei Taurini 19, 00185, Rome, Italy
| | - Letizia Chiodo
- Department of Engineering, Campus Bio-Medico University of Rome, Via Álvaro del Portillo 21, 00128, Rome, Italy.
| | - Giovanni Ciccotti
- Istituto per le Applicazioni del Calcolo IAC-CNR, Via dei Taurini 19, 00185, Rome, Italy and Physics Department, University of Rome La Sapienza, Ple. A. Moro 5, 00185 Roma, Italy and School of Physics, University College of Dublin, Belfield, Dublin 4, Ireland
| | - Alberto Albinati
- Chemistry Department, Milan University, Via C. Golgi 19, 20133, Milan, Italy
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12
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Investigation on the intramolecular proton transfer mechanism of [Cp2MHn](Cp = C5H5, M = Mo, W, Re; n = 1 ~ 2) with BuBCl2. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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13
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Wang S, Pullen S, Weippert V, Liu T, Ott S, Lomoth R, Hammarström L. Direct Spectroscopic Detection of Key Intermediates and the Turnover Process in Catalytic H 2 Formation by a Biomimetic Diiron Catalyst. Chemistry 2019; 25:11135-11140. [PMID: 31210385 DOI: 10.1002/chem.201902100] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Indexed: 11/08/2022]
Abstract
[FeFe(Cl2 -bdt)(CO)6 ] (1; Cl2 -bdt=3,6-dichlorobenzene-1,2-dithiolate), inspired by the active site of FeFe-hydrogenase, shows a chemically reversible 2 e- reduction at -1.20 V versus the ferrocene/ferrocenium couple. The rigid and aromatic bdt bridging ligand lowers the reduction potential and stabilizes the reduced forms, compared with analogous complexes with aliphatic dithiolates; thus allowing details of the catalytic process to be characterized. Herein, time-resolved IR spectroscopy is used to provide kinetic and structural information on key catalytic intermediates. This includes the doubly reduced, protonated complex 1H- , which has not been previously identified experimentally. In addition, the first direct spectroscopic observation of the turnover process for a molecular H2 evolving catalyst is reported, allowing for straightforward determination of the turnover frequency.
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Affiliation(s)
- Shihuai Wang
- Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Sonja Pullen
- Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden.,Current Address: Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto Hahn Str. 6, 44227, Dortmund, Germany
| | - Valentin Weippert
- Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Tianfei Liu
- Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Sascha Ott
- Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Reiner Lomoth
- Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Leif Hammarström
- Department of Chemistry-Ångström Laboratory, Uppsala University, Box 523, 75120, Uppsala, Sweden
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14
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Benedek Z, Papp M, Oláh J, Szilvási T. Exploring Hydrogen Evolution Accompanying Nitrogen Reduction on Biomimetic Nitrogenase Analogs: Can Fe-N xH yIntermediates Be Active Under Turnover Conditions? Inorg Chem 2019; 58:7969-7977. [PMID: 31125218 DOI: 10.1021/acs.inorgchem.9b00719] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Nitrogen reduction reaction (N2RR) carried out on biomimetic catalytic systems is considered to be a promising alternative for the traditional Haber-Bosch ammonia synthesis. Unfortunately, the selectivity of the currently known biomimetic catalysts is poor, as they also catalyze the unproductive hydrogen evolution reaction (HER). In the present computational study, we examine the HER activity of early N2RR intermediates in EP3 (E = B, Si) ligated single-site biomimetic iron complexes by calculating and comparing the activation Gibbs free energies of HER and N2RR elementary steps. We find that, in contrast to previous suggestions, early N2RR intermediates are not likely sources of HER under turnover conditions, as the barriers of the competing N2RR steps are significantly lower. Consequently, future research should focus on preventing other potential HER mechanisms, e.g., hydride formation, rather than accelerating the consumption of early N2RR intermediates as proposed earlier to design more efficient biomimetic catalysts.
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Affiliation(s)
- Zsolt Benedek
- Department of Inorganic and Analytical Chemistry , Budapest University of Technology and Economics , Szent Gellért tér 4 , 1111 Budapest , Hungary
| | - Marcell Papp
- Department of Inorganic and Analytical Chemistry , Budapest University of Technology and Economics , Szent Gellért tér 4 , 1111 Budapest , Hungary
| | - Julianna Oláh
- Department of Inorganic and Analytical Chemistry , Budapest University of Technology and Economics , Szent Gellért tér 4 , 1111 Budapest , Hungary
| | - Tibor Szilvási
- Department of Chemical and Biological Engineering , University of Wisconsin-Madison , 1415 Engineering Drive , Madison , Wisconsin 53706 , United States
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15
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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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16
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Xu X, Sun Z, Meng L, Zheng S, Li X. A comparative study on the reaction mechanisms of Cp2MH2(M = Cr, Mo, W) with HBF4. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.4790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Xia Xu
- College of Chemistry and Material Science; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
| | - Zheng Sun
- College of Chemistry and Material Science; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
| | - Lingpeng Meng
- College of Chemistry and Material Science; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
- National Demonstratin Center for Experimental Chemistry; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
| | - Shijun Zheng
- College of Chemistry and Material Science; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
| | - Xiaoyan Li
- College of Chemistry and Material Science; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
- National Demonstratin Center for Experimental Chemistry; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
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17
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Morris RH. Estimating the Wavenumber of Terminal Metal-Hydride Stretching Vibrations of Octahedral d6 Transition Metal Complexes. Inorg Chem 2018; 57:13809-13821. [DOI: 10.1021/acs.inorgchem.8b02314] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Robert H. Morris
- Department of Chemistry, University of Toronto, 80 Saint George St., Toronto, Ontario M5S3H6, Canada
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18
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Gu NX, Oyala PH, Peters JC. An S = 1/ 2 Iron Complex Featuring N 2, Thiolate, and Hydride Ligands: Reductive Elimination of H 2 and Relevant Thermochemical Fe-H Parameters. J Am Chem Soc 2018; 140:6374-6382. [PMID: 29684269 DOI: 10.1021/jacs.8b02603] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Believed to accumulate on the Fe sites of the FeMo-cofactor (FeMoco) of MoFe-nitrogenase under turnover, strongly donating hydrides have been proposed to facilitate N2 binding to Fe and may also participate in the hydrogen evolution process concomitant to nitrogen fixation. Here, we report the synthesis and characterization of a thiolate-coordinated FeIII(H)(N2) complex, which releases H2 upon warming to yield an FeII-N2-FeII complex. Bimolecular reductive elimination of H2 from metal hydrides is pertinent to the hydrogen evolution processes of both enzymes and electrocatalysts, but well-defined examples are uncommon and usually observed from diamagnetic second- and third-row transition metals. Kinetic data obtained on the HER of this ferric hydride species are consistent with a bimolecular reductive elimination pathway, arising from cleavage of the Fe-H bond with a computationally determined BDFE of 55.6 kcal/mol.
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Affiliation(s)
- Nina X Gu
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Paul H Oyala
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
| | - Jonas C Peters
- Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , California 91125 , United States
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19
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Adams RE, Grusenmeyer TA, Griffith AL, Schmehl RH. Transition metal hydride complexes as mechanistic models for proton reduction catalysis. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.02.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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20
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Affiliation(s)
- Lillian V. A. Hale
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Nathaniel K. Szymczak
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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21
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Dang Y, Wang W, Meng L, Li Q, Li X. Nature of MoH···I bonds in Cp 2
Mo(L)H···I-C≡C-R Complexes (L=H, CN, PPh 2
, C(CH 3
) 3
; R=NO 2
, Cl, Br, H, OH, CH 3
, NH 2
). Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4258] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yaru Dang
- College of Chemistry and Material Science; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
| | - Weihua Wang
- College of Chemistry and Material Science; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
| | - Lingpeng Meng
- National Demonstratin Center for Experimental Chemistry; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
| | - Qingzhong Li
- China Science and Engineering College of Chemistry and Biology; Yantai University; Yantai 264005 China
| | - Xiaoyan Li
- College of Chemistry and Material Science; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
- National Demonstratin Center for Experimental Chemistry; Hebei Normal University; Road East of 2nd Ring South Shijiazhuang 050024 China
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22
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Jerabek P, Vondung L, Schwerdtfeger P. Tipping the Balance between Ligand and Metal Protonation due to Relativistic Effects: Unusually High Proton Affinity in Gold(I) Pincer Complexes. Chemistry 2018; 24:6047-6051. [DOI: 10.1002/chem.201800755] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Paul Jerabek
- Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study; the Institute for Natural and Mathematical Sciences; Massey University Albany; Auckland New Zealand
| | - Lisa Vondung
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Str. 4 35032 Marburg Germany
| | - Peter Schwerdtfeger
- Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study; the Institute for Natural and Mathematical Sciences; Massey University Albany; Auckland New Zealand
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23
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Unsleber JP, Neugebauer J, Morris RH. DFT methods applied to answer the question: how accurate is the ligand acidity constant method for estimating the pKa of transition metal hydride complexes MHXL4 when X is varied? Dalton Trans 2018; 47:2739-2747. [DOI: 10.1039/c7dt03473c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Additive ligand acidity constants AL of anionic ligands are calculated for neutral hydrides of iron(ii), ruthenium(ii) and osmium(ii) with phosphine and carbonyl co-ligands; constant AL in green, more variable AL in red.
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Affiliation(s)
- Jan P. Unsleber
- Theoretische Organische Chemie
- Organisch-Chemisches Institut and Center for Multiscale Theory and Computation
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
| | - Johannes Neugebauer
- Theoretische Organische Chemie
- Organisch-Chemisches Institut and Center for Multiscale Theory and Computation
- Westfälische Wilhelms-Universität Münster
- 48149 Münster
- Germany
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24
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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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25
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Johnson SI, Gray HB, Blakemore JD, Goddard WA. Role of Ligand Protonation in Dihydrogen Evolution from a Pentamethylcyclopentadienyl Rhodium Catalyst. Inorg Chem 2017; 56:11375-11386. [DOI: 10.1021/acs.inorgchem.7b01698] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Samantha I. Johnson
- Center for Chemical
Innovation in Solar Fuels, California Institute of Technology, Pasadena, California 91125, United States
- Materials Research Center, California Institute of Technology, Pasadena, California 91125, United States
| | - Harry B. Gray
- Center for Chemical
Innovation in Solar Fuels, California Institute of Technology, Pasadena, California 91125, United States
| | - James D. Blakemore
- Department of Chemistry, University of Kansas, Lawrence, Kansas 66045-7582, United States
| | - William A. Goddard
- Materials Research Center, California Institute of Technology, Pasadena, California 91125, United States
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26
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Pracht P, Bauer CA, Grimme S. Automated and efficient quantum chemical determination and energetic ranking of molecular protonation sites. J Comput Chem 2017; 38:2618-2631. [DOI: 10.1002/jcc.24922] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 07/27/2017] [Accepted: 08/01/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Philipp Pracht
- Mulliken Center for Theoretical Chemistry, Institute of Physical and Theoretical Chemistry, University of Bonn, Beringstr. 4; 53115 Bonn Germany
| | - Christoph Alexander Bauer
- Mulliken Center for Theoretical Chemistry, Institute of Physical and Theoretical Chemistry, University of Bonn, Beringstr. 4; 53115 Bonn Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institute of Physical and Theoretical Chemistry, University of Bonn, Beringstr. 4; 53115 Bonn Germany
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27
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Cukrowski I, de Lange JH, Groenewald F, Raubenheimer HG. Gold(I) Hydrides as Proton Acceptors in Dihydrogen Bond Formation. Chemphyschem 2017; 18:2288-2294. [PMID: 28544420 DOI: 10.1002/cphc.201700383] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/19/2017] [Indexed: 11/10/2022]
Abstract
Wavefunction and DFT calculations indicate that anionic dihydride complexes of AuI form strong to moderate directed Au-H⋅⋅⋅H bonds with one or two HF, H2 O and NH3 prototype proton donor molecules. The largely electrostatic interaction is influenced by relativistic effects which, however, do not increase the binding energy. Very weak Au⋅⋅⋅H associations-exhibiting a corresponding bond path-occur between neutral AuH and HF units, although ultimately F becomes the preferred donor atom in the most stable structure. Increasing the hydridicity of AuH by attachment of an electron donating NHC ligand effects Au-H⋅⋅⋅H bonding of moderate strength only with HF, whereas competing Au⋅⋅⋅H interactions dominate for H2 O and NH3 . Rare η2 coordinated and HX (X=F or OH) associated H2 complexes are produced during interaction with a single ion of stronger acidity, H2 F+ or H3 O+ . Theoretically, reaction of excess [AuH2 ]- as proton acceptor with H3 O+ or NH4+ in 3:1 or 4:1 ionic ratios, respectively, affords H⋅⋅⋅H bonded analogues of Eigen-type adducts. Outstanding analytical relationships between selected bonding parameters support the integrity of the results.
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Affiliation(s)
- Ignacy Cukrowski
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria, 0002, South Africa
| | - Jurgens H de Lange
- Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Lynnwood Road, Pretoria, 0002, South Africa
| | - Ferdinand Groenewald
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
| | - Helgard G Raubenheimer
- Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa
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28
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Szatkowski L, Hall MB. Molybdenum Trihydride Complexes: Computational Model of Oxidatively Induced Reductive Elimination of Dihydrogen. Inorg Chem 2017; 56:9653-9659. [DOI: 10.1021/acs.inorgchem.6b02805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lukasz Szatkowski
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
- Department
of Chemistry and Biochemistry, University of Arizona, 1306 East
University Boulevard, Tucson, Arizona 85721, United States
| | - Michael B. Hall
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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29
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Reactions of iron(II) hydrides formed by selective C F/C H bond activation in fluoroaryl-imines. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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30
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Zavras A, Ghari H, Ariafard A, Canty AJ, O’Hair RAJ. Gas-Phase Ion–Molecule Reactions of Copper Hydride Anions [CuH2]− and [Cu2H3]−. Inorg Chem 2017; 56:2387-2399. [DOI: 10.1021/acs.inorgchem.6b02145] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Athanasios Zavras
- School of Chemistry
and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
| | - Hossein Ghari
- Department of Chemistry, Faculty of Science,
Central Tehran Branch, Islamic Azad University, Shahrak Gharb, Tehran, Iran
| | - Alireza Ariafard
- The School of Physical Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
- Department of Chemistry, Faculty of Science,
Central Tehran Branch, Islamic Azad University, Shahrak Gharb, Tehran, Iran
| | - Allan J. Canty
- The School of Physical Sciences, University of Tasmania, Private Bag 75, Hobart, Tasmania 7001, Australia
| | - Richard A. J. O’Hair
- School of Chemistry
and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, 30 Flemington Road, Parkville, Victoria 3010, Australia
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31
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Golub IE, Filippov OA, Gulyaeva ES, Gutsul EI, Belkova NV. The interplay of proton accepting and hydride donor abilities in the mechanism of step-wise boron hydrides alcoholysis. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2016.10.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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32
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Alberico E, Lennox AJJ, Vogt LK, Jiao H, Baumann W, Drexler HJ, Nielsen M, Spannenberg A, Checinski MP, Junge H, Beller M. Unravelling the Mechanism of Basic Aqueous Methanol Dehydrogenation Catalyzed by Ru-PNP Pincer Complexes. J Am Chem Soc 2016; 138:14890-14904. [PMID: 27759392 DOI: 10.1021/jacs.6b05692] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ruthenium PNP complex 1a (RuH(CO)Cl(HN(C2H4Pi-Pr2)2)) represents a state-of-the-art catalyst for low-temperature (<100 °C) aqueous methanol dehydrogenation to H2 and CO2. Herein, we describe an investigation that combines experiment, spectroscopy, and theory to provide a mechanistic rationale for this process. During catalysis, the presence of two anionic resting states was revealed, Ru-dihydride (3-) and Ru-monohydride (4-) that are deprotonated at nitrogen in the pincer ligand backbone. DFT calculations showed that O- and CH- coordination modes of methoxide to ruthenium compete, and form complexes 4- and 3-, respectively. Not only does the reaction rate increase with increasing KOH, but the ratio of 3-/4- increases, demonstrating that the "inner-sphere" C-H cleavage, via C-H coordination of methoxide to Ru, is promoted by base. Protonation of 3- liberates H2 gas and formaldehyde, the latter of which is rapidly consumed by KOH to give the corresponding gem-diolate and provides the overall driving force for the reaction. Full MeOH reforming is achieved through the corresponding steps that start from the gem-diolate and formate. Theoretical studies into the mechanism of the catalyst Me-1a (N-methylated 1a) revealed that C-H coordination to Ru sets-up C-H cleavage and hydride delivery; a process that is also promoted by base, as observed experimentally. However, in this case, Ru-dihydride Me-3 is much more stable to protonation and can even be observed under neutral conditions. The greater stability of Me-3 rationalizes the lower rates of Me-1a compared to 1a, and also explains why the reaction rate then drops with increasing KOH concentration.
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Affiliation(s)
- Elisabetta Alberico
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany.,Istituto di Chimica Biomolecolare, Consiglio Nazionale delle Ricerche , tr. La Crucca 3, 07100 Sassari, Italy
| | - Alastair J J Lennox
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany
| | - Lydia K Vogt
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany
| | - Haijun Jiao
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany
| | - Wolfgang Baumann
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany
| | - Hans-Joachim Drexler
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany
| | - Martin Nielsen
- Centre for Catalysis and Sustainable Chemistry, Department of Chemistry, Technical University of Denmark , Kemitorvet 207, 2800 Kgs. Lyngby, Denmark
| | - Anke Spannenberg
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany
| | | | - Henrik Junge
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz Institute for Catalysis, University of Rostock , Albert Einstein-Straße 29a, 18059 Rostock, Germany
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33
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Johnson SI, Nielsen RJ, Goddard WA. Selectivity for HCO2– over H2 in the Electrochemical Catalytic Reduction of CO2 by (POCOP)IrH2. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01755] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Samantha I. Johnson
- Joint Center for Artificial
Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States
| | - Robert J. Nielsen
- Joint Center for Artificial
Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States
| | - William A. Goddard
- Joint Center for Artificial
Photosynthesis, California Institute of Technology, Pasadena, California 91125, United States
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34
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35
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Esteruelas MA, López AM, Oliván M. Polyhydrides of Platinum Group Metals: Nonclassical Interactions and σ-Bond Activation Reactions. Chem Rev 2016; 116:8770-847. [DOI: 10.1021/acs.chemrev.6b00080] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Miguel A. Esteruelas
- Departamento de
Química
Inorgánica, Instituto de Síntesis Química
y Catálisis Homogénea (ISQCH), Centro de Innovación
en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza−CSIC, 50009 Zaragoza, Spain
| | - Ana M. López
- Departamento de
Química
Inorgánica, Instituto de Síntesis Química
y Catálisis Homogénea (ISQCH), Centro de Innovación
en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza−CSIC, 50009 Zaragoza, Spain
| | - Montserrat Oliván
- Departamento de
Química
Inorgánica, Instituto de Síntesis Química
y Catálisis Homogénea (ISQCH), Centro de Innovación
en Química Avanzada (ORFEO−CINQA), Universidad de Zaragoza−CSIC, 50009 Zaragoza, Spain
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36
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Maity A, Teets TS. Main Group Lewis Acid-Mediated Transformations of Transition-Metal Hydride Complexes. Chem Rev 2016; 116:8873-911. [DOI: 10.1021/acs.chemrev.6b00034] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ayan Maity
- Department of Chemistry, University of Houston, Lamar Fleming Jr. Building, 3585 Cullen Boulevard,
Room 112, Houston, Texas 77204-5003, United States
| | - Thomas S. Teets
- Department of Chemistry, University of Houston, Lamar Fleming Jr. Building, 3585 Cullen Boulevard,
Room 112, Houston, Texas 77204-5003, United States
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37
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Szatkowski L, Hall MB. Molybdenum Trihydride Complexes: Computational Determinations of Hydrogen Positions and Rearrangement Mechanisms. Inorg Chem 2015; 54:6380-5. [PMID: 26102430 DOI: 10.1021/acs.inorgchem.5b00693] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In crystal structures of the molybdenum complexes [(1,2,4-C5H2(t)Bu3)Mo(PMe3)2H3] (Cp(t)Bu3) and [(C5H(i)Pr4)Mo(PMe3)2H3] (Cp(i)Pr4), the Mo-bound hydrogen positions were resolved for Cp(t)Bu3, but not for Cp(i)Pr4. NMR experiments revealed the existence of an unknown mechanism for hydrogen atom exchange in these molecules, which can be "frozen out" for Cp(t)Bu3 but not for Cp(i)Pr4. Density functional theory calculations of the most stable conformations for both complexes in the gas phase and in a continuum solvent model indicate that the H's of the Cp(i)Pr4 complex are unresloved because of their disorder, which does not occur for Cp(t)Bu3. A corresponding examination of alternative rearrangement pathways shows that the rearrangements of the H's could occur by two mechanisms: parallel to the cyclopentadienyl (Cp) ring in a single step and perpendicular to the Cp ring in two steps. The parallel pathway is preferred for both molecules, but it has a lower energy barrier for Cp(i)Pr4 than for Cp(t)Bu3.
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38
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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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39
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Zamorano A, Rendón N, López-Serrano J, Valpuesta JEV, Álvarez E, Carmona E. Dihydrogen Catalysis of the Reversible Formation and Cleavage of CH and NH Bonds of Aminopyridinate Ligands Bound to (η5-C5Me5)IrIII. Chemistry 2014; 21:2576-87. [DOI: 10.1002/chem.201405340] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Indexed: 11/06/2022]
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40
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Chernev P, Lambertz C, Brünje A, Leidel N, Sigfridsson KGV, Kositzki R, Hsieh CH, Yao S, Schiwon R, Driess M, Limberg C, Happe T, Haumann M. Hydride Binding to the Active Site of [FeFe]-Hydrogenase. Inorg Chem 2014; 53:12164-77. [DOI: 10.1021/ic502047q] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Petko Chernev
- Institute for Experimental
Physics, Free University Berlin, 14195 Berlin, Germany
| | - Camilla Lambertz
- Institute for Biochemistry of Plants, Department
of Photobiotechnology, Ruhr-University Bochum, 44801 Bochum, Germany
| | - Annika Brünje
- Institute for Biochemistry of Plants, Department
of Photobiotechnology, Ruhr-University Bochum, 44801 Bochum, Germany
| | - Nils Leidel
- Institute for Experimental
Physics, Free University Berlin, 14195 Berlin, Germany
| | | | - Ramona Kositzki
- Institute for Experimental
Physics, Free University Berlin, 14195 Berlin, Germany
| | - Chung-Hung Hsieh
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Shenglai Yao
- Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Rafael Schiwon
- Department of Chemistry, Humboldt University Berlin, 12489 Berlin, Germany
| | - Matthias Driess
- Department of Chemistry, Technical University Berlin, 10623 Berlin, Germany
| | - Christian Limberg
- Department of Chemistry, Humboldt University Berlin, 12489 Berlin, Germany
| | - Thomas Happe
- Institute for Biochemistry of Plants, Department
of Photobiotechnology, Ruhr-University Bochum, 44801 Bochum, Germany
| | - Michael Haumann
- Institute for Experimental
Physics, Free University Berlin, 14195 Berlin, Germany
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41
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Bhattacharya P, Krause JA, Guan H. Activation of Dihydrogen and Silanes by Cationic Iron Bis(phosphinite) Pincer Complexes. Organometallics 2014. [DOI: 10.1021/om500758j] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Papri Bhattacharya
- Department
of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Jeanette A. Krause
- Department
of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
| | - Hairong Guan
- Department
of Chemistry, University of Cincinnati, P.O. Box 210172, Cincinnati, Ohio 45221-0172, United States
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Silantyev GA, Filippov OA, Musa S, Gelman D, Belkova NV, Weisz K, Epstein LM, Shubina ES. Conformational Flexibility of Dibenzobarrelene-Based PC(sp3)P Pincer Iridium Hydride Complexes: The Role of Hemilabile Functional Groups and External Coordinating Solvents. Organometallics 2014. [DOI: 10.1021/om500308g] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Gleb A. Silantyev
- 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
| | - Sanaa Musa
- Institute
of Chemistry, The Hebrew University, Edmond Safra Campus, Givat Ram, 91904 Jerusalem, Israel
| | - Dmitri Gelman
- Institute
of Chemistry, The Hebrew University, Edmond Safra Campus, Givat Ram, 91904 Jerusalem, Israel
| | - Natalia V. Belkova
- A.
N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Street 28, 119991 Moscow, Russia
| | - Klaus Weisz
- Institut
für Biochemie, Ernst-Moritz-Arndt-Universität Greifswald, Felix-Hausdorff-Straße
4, 17487 Greifswald, Germany
| | - Lina M. Epstein
- 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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43
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Bourrez M, Steinmetz R, Gloaguen F. Mechanistic Insights into the Catalysis of Electrochemical Proton Reduction by a Diiron Azadithiolate Complex. Inorg Chem 2014; 53:10667-73. [DOI: 10.1021/ic501815m] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Marc Bourrez
- UMR 6521, CNRS, Université de Bretagne Occidentale, Brest, France
| | - Romain Steinmetz
- UMR 6521, CNRS, Université de Bretagne Occidentale, Brest, France
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44
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Manor BC, Ringenberg MR, Rauchfuss TB. Borane-protected cyanides as surrogates of H-bonded cyanides in [FeFe]-hydrogenase active site models. Inorg Chem 2014; 53:7241-7. [PMID: 24992155 PMCID: PMC4364604 DOI: 10.1021/ic500470z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Triarylborane Lewis acids bind [Fe2(pdt)(CO)4(CN)2](2-) [1](2-) (pdt(2-) = 1,3-propanedithiolate) and [Fe2(adt)(CO)4(CN)2](2-) [3](2-) (adt(2-) = 1,3-azadithiolate, HN(CH2S(-))2) to give the 2:1 adducts [Fe2(xdt)(CO)4(CNBAr3)2](2-). Attempts to prepare the 1:1 adducts [1(BAr3)](2-) (Ar = Ph, C6F5) were unsuccessful, but related 1:1 adducts were obtained using the bulky borane B(C6F4-o-C6F5)3 (BAr(F)*3). By virtue of the N-protection by the borane, salts of [Fe2(pdt)(CO)4(CNBAr3)2](2-) sustain protonation to give hydrides that are stable (in contrast to [H1](-)). The hydrides [H1(BAr3)2](-) are 2.5-5 pKa units more acidic than the parent [H1](-). The adducts [1(BAr3)2](2-) oxidize quasi-reversibly around -0.3 V versus Fc(0/+) in contrast to ca. -0.8 V observed for the [1](2-/-) couple. A simplified synthesis of [1](2-), [3](2-), and [Fe2(pdt)(CO)5(CN)](-) ([2](-)) was developed, entailing reaction of the diiron hexacarbonyl complexes with KCN in MeCN.
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Affiliation(s)
- Brian C. Manor
- School of Chemical Sciences, University of Illinois, Urbana, Illinois 61801, United States
| | - Mark R. Ringenberg
- School of Chemical Sciences, University of Illinois, Urbana, Illinois 61801, United States
| | - Thomas B. Rauchfuss
- School of Chemical Sciences, University of Illinois, Urbana, Illinois 61801, United States
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45
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Bai W, Tse SKS, Lee KH, Sung HHY, Williams ID, Lin Z, Jia G. Synthesis and characterization of MH⋯HOR dihydrogen bonded ruthenium and osmium complexes (η5-C5H4CH2OH)MH(PPh3)2 (M = Ru, Os). Sci China Chem 2014. [DOI: 10.1007/s11426-014-5143-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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46
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Jiménez-Tenorio M, Puerta MC, Valerga P, Ortuño MA, Ujaque G, Lledós A. Counteranion-Dependent Reaction Pathways in the Protonation of Cationic Ruthenium–Vinylidene Complexes. Organometallics 2014. [DOI: 10.1021/om500179x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Manuel Jiménez-Tenorio
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Quı́mica Inorgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
| | - M. Carmen Puerta
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Quı́mica Inorgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
| | - Pedro Valerga
- Departamento
de Ciencia de los Materiales e Ingeniería Metalúrgica
y Quı́mica Inorgánica-INBIO, Facultad de Ciencias, Universidad de Cádiz, 11510 Puerto Real, Cádiz, Spain
| | - Manuel A. Ortuño
- Departament
de Quı́mica, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Gregori Ujaque
- Departament
de Quı́mica, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
| | - Agustı́ Lledós
- Departament
de Quı́mica, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain
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47
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Hulley EB, Helm ML, Bullock RM. Heterolytic cleavage of H2 by bifunctional manganese(i) complexes: impact of ligand dynamics, electrophilicity, and base positioning. Chem Sci 2014. [DOI: 10.1039/c4sc01801j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A balance of metal electrophilicity and ligand steric influences is required for facile, reversible H–H heterolytic cleavage in Mn complexes with pendant amines.
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Affiliation(s)
- Elliott B. Hulley
- Center for Molecular Electrocatalysis
- Physical Sciences Division
- Pacific Northwest National Laboratory
- Richland, USA
| | - Monte L. Helm
- Center for Molecular Electrocatalysis
- Physical Sciences Division
- Pacific Northwest National Laboratory
- Richland, USA
| | - R. Morris Bullock
- Center for Molecular Electrocatalysis
- Physical Sciences Division
- Pacific Northwest National Laboratory
- Richland, USA
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48
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Ruthenium-Catalyzed Hydrogen Generation from Alcohols and Formic Acid, Including Ru-Pincer-Type Complexes. TOP ORGANOMETAL CHEM 2014. [DOI: 10.1007/3418_2014_84] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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49
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50
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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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