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Mateu-Campos J, Guillamón E, Safont VS, Junge K, Junge H, Beller M, Llusar R. Unprecedented Mo 3S 4 cluster-catalyzed radical C-C cross-coupling reactions of aryl alkynes and acrylates. Dalton Trans 2024; 53:4147-4153. [PMID: 38318770 DOI: 10.1039/d3dt04121b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024]
Abstract
A new method for the generation of benzyl radicals from terminal aromatic alkynes has been developed, which allows the direct cross coupling with acrylate derivatives. Our additive-free protocol employs air-stable diamino Mo3S4 cubane-type cluster catalysts in the presence of hydrogen. A sulfur-centered cluster catalysis mechanism for benzyl radical formation is proposed based on catalytic and stoichiometric experiments. The process starts with the cluster hydrogen activation to form a bis(hydrosulfido) [Mo3(μ3-S)(μ-S)(μ-SH)2Cl3(dmen)3]+ intermediate. The reaction of various aromatic terminal alkynes containing different functionalities with a series of acrylates affords the corresponding Giese-type radical addition products.
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Affiliation(s)
- Juanjo Mateu-Campos
- Departament de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071 Castelló de la Plana, Spain.
| | - Eva Guillamón
- Departament de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071 Castelló de la Plana, Spain.
| | - Vicent S Safont
- Departament de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071 Castelló de la Plana, Spain.
| | - Kathrin Junge
- Leibniz-Institute for Catalysis e.V., Albert-Einstein Straße, 29a, 18059 Rostock, Germany
| | - Henrik Junge
- Leibniz-Institute for Catalysis e.V., Albert-Einstein Straße, 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institute for Catalysis e.V., Albert-Einstein Straße, 29a, 18059 Rostock, Germany
| | - Rosa Llusar
- Departament de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071 Castelló de la Plana, Spain.
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2
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Akashi H, Machida N, Kamada T, Nihashi H, Aya D, Yamaguchi K, Takagi H, Shibahara T. Molybdenum Dithiolene Complexes: Trinuclear Mixed-Valence Complexes and Geometrical Isomers of Dinuclear Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20170024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Haruo Akashi
- Research Institute of Natural Sciences, Okayama University of Science, Ridai-cho, Kita-ku, Okayama 700-0005
| | - Norihiko Machida
- Research Institute of Natural Sciences, Okayama University of Science, Ridai-cho, Kita-ku, Okayama 700-0005
| | - Takahiro Kamada
- Research Institute of Natural Sciences, Okayama University of Science, Ridai-cho, Kita-ku, Okayama 700-0005
| | - Hiroki Nihashi
- Department of Chemistry, Okayama University of Science, Ridai-cho, Kita-ku, Okayama 700-0005
| | - Dai Aya
- Department of Chemistry, Okayama University of Science, Ridai-cho, Kita-ku, Okayama 700-0005
| | - Kazuya Yamaguchi
- Department of Chemistry, Okayama University of Science, Ridai-cho, Kita-ku, Okayama 700-0005
| | - Hideaki Takagi
- Department of Foreign Studies, Kibi International University, Okuda-Nishimachi, Kita-ku, Okayama 700-0931
| | - Takashi Shibahara
- Department of Chemistry, Okayama University of Science, Ridai-cho, Kita-ku, Okayama 700-0005
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Pino-Chamorro JA, Laricheva YA, Guillamón E, Fernández-Trujillo MJ, Bustelo E, Gushchin AL, Shmelev NY, Abramov PA, Sokolov MN, Llusar R, Basallote MG, Algarra AG. Cycloaddition of alkynes to diimino Mo3S4 cubane-type clusters: a combined experimental and theoretical approach. NEW J CHEM 2016. [DOI: 10.1039/c6nj01787h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Newly synthesised molibdenum diimino clusters interact with alkynes leading to dithiolene species.
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Bustelo E, Gushchin AL, Fernández-Trujillo MJ, Basallote MG, Algarra AG. On the Critical Effect of the Metal (Mo vs. W) on the [3+2] Cycloaddition Reaction of M3 S4 Clusters with Alkynes: Insights from Experiment and Theory. Chemistry 2015; 21:14823-33. [PMID: 26383190 DOI: 10.1002/chem.201502644] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Indexed: 01/19/2023]
Abstract
Whereas the cluster [Mo3 S4 (acac)3 (py)3 ](+) ([1](+) , acac=acetylacetonate, py=pyridine) reacts with a variety of alkynes, the cluster [W3 S4 (acac)3 (py)3 ](+) ([2](+) ) remains unaffected under the same conditions. The reactions of cluster [1](+) show polyphasic kinetics, and in all cases clusters bearing a bridging dithiolene moiety are formed in the first step through the concerted [3+2] cycloaddition between the C≡C atoms of the alkyne and a Mo(μ-S)2 moiety of the cluster. A computational study has been conducted to analyze the effect of the metal on these concerted [3+2] cycloaddition reactions. The calculations suggest that the reactions of cluster [2](+) with alkynes feature ΔG(≠) values only slightly larger than its molybdenum analogue, however, the differences in the reaction free energies between both metal clusters and the same alkyne reach up to approximately 10 kcal mol(-1) , therefore indicating that the differences in the reactivity are essentially thermodynamic. The activation strain model (ASM) has been used to get more insights into the critical effect of the metal center in these cycloadditions, and the results reveal that the change in reactivity is entirely explained on the basis of the differences in the interaction energies Eint between the cluster and the alkyne. Further decomposition of the Eint values through the localized molecular orbital-energy decomposition analysis (LMO-EDA) indicates that substitution of the Mo atoms in cluster [1](+) by W induces changes in the electronic structure of the cluster that result in weaker intra- and inter-fragment orbital interactions.
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Affiliation(s)
- Emilio Bustelo
- Departmento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Campus Universitario de Puerto Real, Universidad de Cádiz, 11510 Puerto Real, Cádiz (Spain)
| | - Artem L Gushchin
- Nikolaev Institute of Inorganic Chemistry, Russian Academy of Sciences, Novosibirsk State University, 630090 Novosibirsk (Russia)
| | - M Jesús Fernández-Trujillo
- Departmento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Campus Universitario de Puerto Real, Universidad de Cádiz, 11510 Puerto Real, Cádiz (Spain)
| | - Manuel G Basallote
- Departmento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Campus Universitario de Puerto Real, Universidad de Cádiz, 11510 Puerto Real, Cádiz (Spain).
| | - Andrés G Algarra
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691 Stockholm (Sweden).
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Pino-Chamorro JÁ, Gushchin AL, Fernández-Trujillo MJ, Hernández-Molina R, Vicent C, Algarra AG, Basallote MG. Mechanism of [3+2] cycloaddition of alkynes to the [Mo3 S4 (acac)3 (py)3 ][PF6 ] cluster. Chemistry 2015; 21:2835-44. [PMID: 25529428 DOI: 10.1002/chem.201405518] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Indexed: 11/09/2022]
Abstract
A study, involving kinetic measurements on the stopped-flow and conventional UV/Vis timescales, ESI-MS, NMR spectroscopy and DFT calculations, has been carried out to understand the mechanism of the reaction of [Mo3 S4 (acac)3 (py)3 ][PF6 ] ([1]PF6 ; acac=acetylacetonate, py=pyridine) with two RCCR alkynes (R=CH2 OH (btd), COOH (adc)) in CH3 CN. Both reactions show polyphasic kinetics, but experimental and computational data indicate that alkyne activation occurs in a single kinetic step through a concerted mechanism similar to that of organic [3+2] cycloaddition reactions, in this case through the interaction with one Mo(μ-S)2 moiety of [1](+) . The rate of this step is three orders of magnitude faster for adc than that for btd, and the products initially formed evolve in subsequent steps into compounds that result from substitution of py ligands or from reorganization to give species with different structures. Activation strain analysis of the [3+2] cycloaddition step reveals that the deformation of the two reactants has a small contribution to the difference in the computed activation barriers, which is mainly associated with the change in the extent of their interaction at the transition-state structures. Subsequent frontier molecular orbital analysis shows that the carboxylic acid substituents on adc stabilize its HOMO and LUMO orbitals with respect to those on btd due to better electron-withdrawing properties. As a result, the frontier molecular orbitals of the cluster and alkyne become closer in energy; this allows a stronger interaction.
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Affiliation(s)
- Jose Ángel Pino-Chamorro
- Departmento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Instituto de Biomoléculas, Universidad de Cádiz, Avda. República Saharahui s/n, 11510 Puerto Real (Spain), Fax: (+34) 956-016-288
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6
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Shibahara T, Kawamoto K, Matsuura A, Takagi H, Nishioka T, Kinoshita I, Akashi H. Removal of Two Hydrogen Atoms from Ketones or Aldehyde: Reaction of a Sulfur-Bridged Incomplete Cubane-Type Molybdenum Cluster with Acetone, Acetaldehyde, Acetylacetone, Ethyl Acetoacetate, and Acetophenone. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20130269] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | | | - Hideaki Takagi
- International Conservation Studies for Cultural Properties, Kibi International University
| | | | | | - Haruo Akashi
- Research Institute of Natural Sciences, Okayama University of Science
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Pino-Chamorro JÁ, Algarra AG, Fernández-Trujillo MJ, Hernández-Molina R, Basallote MG. Kinetic and DFT studies on the mechanism of C-S bond formation by alkyne addition to the [Mo3S4(H2O)9]4+ cluster. Inorg Chem 2013; 52:14334-42. [PMID: 24266451 DOI: 10.1021/ic4023344] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction of [Mo3(μ3-S)(μ-S)3] clusters with alkynes usually leads to formation of two C-S bonds between the alkyne and two of the bridging sulfides. The resulting compounds contain a bridging alkenedithiolate ligand, and the metal centers appear to play a passive role despite reactions at those sites being well illustrated for this kind of cluster. A detailed study including kinetic measurements and DFT calculations has been carried out to understand the mechanism of reaction of the [Mo3(μ3-S)(μ-S)3(H2O)9](4+) (1) cluster with two different alkynes, 2-butyne-1,4-diol and acetylenedicarboxylic acid. Stopped-flow experiments indicate that the reaction involves the appearance in a single kinetic step of a band at 855 or 875 nm, depending on the alkyne used, a position typical of clusters with two C-S bonds. The effects of the concentrations of the reagents, the acidity, and the reaction medium on the rate of reaction have been analyzed. DFT and TD-DFT calculations provide information on the nature of the product formed, its electronic spectrum and the energy profile for the reaction. The structure of the transition state indicates that the alkyne approaches the cluster in a lateral way and both C-S bonds are formed simultaneously.
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Affiliation(s)
- Jose Ángel Pino-Chamorro
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Facultad de Ciencias, Universidad de Cádiz , Apartado 40, Puerto Real, 11510 Cádiz, Spain
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8
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Hernandez-Molina R, Gushchin A, González-Platas J, Martínez M, Rodríguez C, Vicent C. Tungsten and molybdenum incomplete cuboidal clusters; kinetico-mechanistic studies and association in dimers. Dalton Trans 2013; 42:15016-27. [PMID: 23995846 DOI: 10.1039/c3dt51101d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New triangular Mo(IV) and W(IV) incomplete cuboidal cluster complexes containing three η(2)-diethyldithiophosphates (dtp, one per metal centre) and a η(2)(μ)-AcO or η(2)(μ)-dtp ligand bridging two of these centres have been prepared as mono-substituted derivatives and characterized by the usual techniques plus single crystal X-ray diffraction (XRD) analysis in some cases. In the compounds, the single substitutionally available unlocked position is coordinated to different N-donor ligands (1,2-bis(pyridyl)ethylene, pyrimidine, pyrazine) or to the residual solvent. The compounds are very labile and the N-donor ligands are only weakly coordinated, being easily substituted by other donors or coordinating solvents such as acetonitrile. This lability has been explored kinetico-mechanistically by stopped-flow techniques at varying temperatures for the compound [Mo3S4(η(2)-dtp)3(η(2)(μ)-dtp)(H2O)]. By doing so, the nature of the activation process leading to substitution reactions on these complexes has been established as associatively activated and dominated by a very low formation equilibrium constant, that is, by the substitution of the incoming N-donor ligand. Furthermore, the existence of a non-dissociatively activated trigonal 60° fluxional twist has also been established for the η(2)-dtp ligand on the single unlocked position. The lability of the system has also enabled the association in dimers of the acetato derivative, i.e. [Mo3S4(η(2)-dtp)3(η(2)(μ)-AcO)(H2O)], via a pyrazine bridging ligand. After a very careful tuning of the reaction conditions, as established from the kinetico-mechanistic studies, the first single-bridged unsupported dimeric association of {Mo3S4} units, i.e. [{Mo3S4(η(2)-dtp)3(η(2)(μ)-AcO)}2(μ-pyrazine)], has been structurally characterised.
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Affiliation(s)
- Rita Hernandez-Molina
- Departamento de Química Inorgánica, Facultad de Química, Universidad de La Laguna, Tenerife, ES-38200 Spain.
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Hernandez-Molina R, Gili P, Sokolov MN, Safont VS. Theoretical calculations on a series of dinuclear vanadium and niobium clusters. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Llusar R, Vicent C. Trinuclear molybdenum cluster sulfides coordinated to dithiolene ligands and their use in the development of molecular conductors. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.12.026] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Young CG. Facets of early transition metal–sulfur chemistry: Metal–sulfur ligand redox, induced internal electron transfer, and the reactions of metal–sulfur complexes with alkynes. J Inorg Biochem 2007; 101:1562-85. [PMID: 17761291 DOI: 10.1016/j.jinorgbio.2007.06.040] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2007] [Revised: 06/25/2007] [Accepted: 06/26/2007] [Indexed: 10/23/2022]
Abstract
Metal-sulfur ligand redox interplay, induced internal electron transfer reactions, and the generation of dithiolene and organosulfur ligands in the reactions of metal-sulfur compounds with alkynes are important and useful facets of early transition metal-sulfur chemistry. This review focuses on developments in these areas over the past 30 years.
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Affiliation(s)
- Charles G Young
- School of Chemistry, University of Melbourne, Victoria 3010, Australia.
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Reaction of Sulfur and Oxygen-Bridged 8-Quinolinolato Trinuclear Molybdenum Cluster [Mo3OS3(qn)3(H2O)3]+ with Acetylene Carboxylic Acids. J CLUST SCI 2007. [DOI: 10.1007/s10876-007-0147-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Synthesis and electrochemistry of adducts of acetylene and acetylenedicarboxylic acid at sulfurs in sulfur-bridged nitrilotriacetato molybdenum clusters. CR CHIM 2005. [DOI: 10.1016/j.crci.2004.10.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Ide Y, Shibahara T. A cage cluster with nine vertices composed of three molybdenum, four sulfur and two carbon atoms. INORG CHEM COMMUN 2004. [DOI: 10.1016/j.inoche.2004.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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