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Maggioni D, Tunzi D, Illiano P, Mercandelli P, Sironi A, Beringhelli T, Carlucci L, D'Alfonso G, Panigati M. From μ3- to μ- agostic methyl coordination: NMR and solid state study of donor ligands uptake by the triangular cluster anion [Re3(μ-H)3(μ3-CH3)(CO)9]-. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Alvarez MA, García ME, García-Vivó D, Ruiz MA, Toyos A. E-H Bond Activation and Insertion Processes in the Reactions of the Unsaturated Hydride [W 2Cp 2(μ-H)(μ-PPh 2)(NO) 2]. Inorg Chem 2018; 57:2228-2241. [PMID: 29411970 DOI: 10.1021/acs.inorgchem.7b03111] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reactions of the title complex (1) with different p-block element (E) molecules was examined. Compound 1 reacted with BH3·THF at room temperature to give the trihydride [W2Cp2(μ-H)H2(μ-PPh2)(NO)2], which formally results from hydrogenation of 1, a reaction that actually does not take place when neat dihydrogen is used. Clean E-H bond oxidative addition, however, took place when 1 was reacted with HSnPh3, to give the related dihydride stannyl derivative [W2Cp2(μ-H)H(μ-PPh2)(NO)2(SnPh3)]. In contrast, the reaction of 1 with HSPh involved H2 elimination to give the thiolate-bridged complex [W2Cp2(μ-SPh)(μ-PPh2)(NO)2], while that with (p-tol)C(O)H resulted in insertion of the aldehyde to yield the related alkoxide complex [W2Cp2{μ-OCH2(p-tol)}(μ-PPh2)(NO)2]. Insertion also prevailed in the reactions of 1 with CNtBu, which, however, involved the competitive formation of new C-H or N-H bonds, to give a mixture of formimidoyl and aminocarbyne derivatives, [W2Cp2(μ-κ1:η2-HCNtBu)(μ-PPh2)(NO)2] (W-W = 3.0177(2) Å) and [W2Cp2{μ-C(NHtBu)}(μ-PPh2)(NO)2] (W-W = 2.9010(4) Å), respectively, even though the latter was thermodynamically preferred, according to density functional theory calculations. The former represents the first structurally characterized complex displaying a formimidoyl or iminoacyl ligand in the alkenyl-like μ-κ1:η2 coordination mode. The reaction of 1 with diazomethane proceeded with N2 elimination and C-H coupling to yield the agostic methyl-bridged complex [W2Cp2(μ-κ1:η2-CH3)(μ-PPh2)(NO)2] (calculated W-W = 2.923 Å), whereas the reaction with N2CH(SiMe3) proceeded with insertion of the diazoalkane to give the corresponding hydrazonide complex [W2Cp2{μ-NH(NCHSiMe3)}(μ-PPh2)(NO)2] (W-W = 2.8608(4) Å). The latter was converted under alkaline conditions to the methyldiazenide derivative [W2Cp2{μ-N(NMe)}(μ-PPh2)(NO)2] (W-W = 2.8730(2) Å), in a process involving hydrolysis of the C-Si bond coupled with a 1,3-H shift from N to C.
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Affiliation(s)
- M Angeles Alvarez
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo , E-33071 Oviedo, Spain
| | - M Esther García
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo , E-33071 Oviedo, Spain
| | - Daniel García-Vivó
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo , E-33071 Oviedo, Spain
| | - Miguel A Ruiz
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo , E-33071 Oviedo, Spain
| | - Adrián Toyos
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo , E-33071 Oviedo, Spain
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Angeles Alvarez M, Esther García M, García-Vivó D, Ruiz MA, Toyos A. Structure and dynamics of heterometallic clusters derived from addition of metal carbonyl fragments to the unsaturated hydride [W 2Cp 2(μ-H)(μ-PPh 2)(NO) 2]. Dalton Trans 2017; 46:15317-15329. [PMID: 29068454 DOI: 10.1039/c7dt03580b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The title complex reacted with [Fe2(CO)9] to give the trinuclear derivative [FeW2Cp2(μ-H)(μ-PPh2)(CO)4(NO)2] (W-W = 3.044(1) Å) as a result of full insertion of the 16-electron Fe(CO)4 fragment into the tricentric W-H-W bond of the parent substrate. In contrast, the reactions with the THF adducts [M(CO)5(THF)] (M = W, Mo) and [MnCp'(CO)2(THF)] (Cp' = C5H4Me) yielded the μ3-hydride derivatives [MW2Cp2(μ3-H)(μ-PPh2)(CO)5(NO)2] (W-W = 3.006(1) to 3.164(1) Å for the W3 compound) and [MnW2Cp2Cp'(μ3-H)(μ-PPh2)(CO)2(NO)2] respectively, all of them resulting from addition (rather than insertion) of the corresponding 16-electron fragment to the W2H moiety of the parent compound. Density Functional Theory calculations revealed that edge- and face-bridged hydride clusters were of similar energy in the W2Fe system, while the face-bridged structure was significantly more stable (by more than ca. 40 kJ mol-1) for the W3 system. Both clusters displayed fast rearrangement in solution involving a flapping movement of the puckered PW2M core of these molecules. This was combined, in the W2Fe cluster, with fast exchange between the almost isoenergetic edge- and face-bridged hydride isomers. The reactions of the title compound with several carbonyl dimers were also examined as an additional synthetic approach to the rational synthesis of heterometallic clusters, but were unsuccessful except in the case of [Co2(CO)8], which reacted at 253 K in the dark to give a mixture of the binuclear complex [CoWCp(μ-PPh2)(CO)4(NO)] (Co-W = 2.8623(6) Å) and the trinuclear cluster [CoW2Cp2(μ-PPh2)(CO)4(NO)2] (W-W = 3.1654(4) Å; W-Co = 2.638(1), 2.829(1) Å), the latter resulting from formal replacement of the hydride ligand with the 17-electron fragment Co(CO)4, which displayed an asymmetric binding to the W2 centre.
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Affiliation(s)
- M Angeles Alvarez
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain.
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García ME, Ramos A, Ruiz MA, Lanfranchi M, Marchio L. Structure and Bonding in the Unsaturated Hydride- and Hydrocarbyl-Bridged Complexes [Mo2(η5-C5H5)2(μ-X)(μ-PCy2)(CO)2] (X = H, CH3, CH2Ph, Ph). Evidence for the Presence of α-Agostic and π-Bonding Interactions. Organometallics 2007. [DOI: 10.1021/om7007265] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- M. Esther García
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, 33071 Oviedo, Spain, and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università di Parma, Parco Area delle Science 17/A, I-43100 Parma, Italy
| | - Alberto Ramos
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, 33071 Oviedo, Spain, and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università di Parma, Parco Area delle Science 17/A, I-43100 Parma, Italy
| | - Miguel A. Ruiz
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, 33071 Oviedo, Spain, and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università di Parma, Parco Area delle Science 17/A, I-43100 Parma, Italy
| | - Maurizio Lanfranchi
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, 33071 Oviedo, Spain, and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università di Parma, Parco Area delle Science 17/A, I-43100 Parma, Italy
| | - Luciano Marchio
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, 33071 Oviedo, Spain, and Dipartimento di Chimica Generale ed Inorganica, Chimica Analitica, Chimica Fisica, Università di Parma, Parco Area delle Science 17/A, I-43100 Parma, Italy
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Wigginton JR, Trepanier SJ, McDonald R, Ferguson MJ, Cowie M. Bridging Methylene and Methyl Complexes of Rhodium/Osmium: Influence of the Ancillary Ligands on the Methyl Binding Mode. Organometallics 2005. [DOI: 10.1021/om0580405] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James R. Wigginton
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Steven J. Trepanier
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Robert McDonald
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Michael J. Ferguson
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
| | - Martin Cowie
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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Hall RJ, Serguievski P, Keister JB. Oxidative Addition of Group 14 Hydrides to an Unsaturated Metal Cluster. Kinetics of Addition of HER3 (ER3 = SiEt3, SiPh3, GeBu3, SnBu3, SnPh3) to H2Os3(CO)10. Organometallics 2000. [DOI: 10.1021/om000411o] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert J. Hall
- Department of Chemistry, University at Buffalo, The State University of New York at Buffalo, Buffalo, New York 14260-3000
| | - Petr Serguievski
- Department of Chemistry, University at Buffalo, The State University of New York at Buffalo, Buffalo, New York 14260-3000
| | - Jerome B. Keister
- Department of Chemistry, University at Buffalo, The State University of New York at Buffalo, Buffalo, New York 14260-3000
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Hamilton DH, Shapley JR. Synthesis and Characterization of (μ-H)2Os3(CO)9(PPh3)(μ-CH2) and Related Compounds. Phosphine Ligand Effects on the Methylene/Methyl Tautomerization. Organometallics 2000. [DOI: 10.1021/om9904293] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- David H. Hamilton
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801
| | - John R. Shapley
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801
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Lee K, Wilson SR, Shapley JR. Reversible Transformation between Methylene and Methylidyne-Hydride Moieties on the Ru10C2 Framework. Organometallics 1998. [DOI: 10.1021/om971120r] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kwangyeol Lee
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801
| | - Scott R. Wilson
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801
| | - John R. Shapley
- Department of Chemistry, University of Illinois, Urbana, Illinois 61801
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