1
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Xiang L, Xie Z. Reaction of [η1:η5-(R2NCH2CH2)C2B9H10]TaMe3 with Isonitriles: Effects of Nitrogen Substituents on Product Formation. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00053] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li Xiang
- Department of Chemistry and State
Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State
Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin,
New Territories, Hong Kong, China
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2
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Sietzen M, Wadepohl H, Ballmann J. Synthesis and reactivity of cyclometalated triamidophosphine complexes of niobium and tantalum. Inorg Chem 2015; 54:4094-103. [PMID: 25856693 DOI: 10.1021/acs.inorgchem.5b00333] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The triamidophosphine protioligand 1 reacts with the homoleptic pentakis(dimethylamido) precursors of niobium and tantalum [M(NMe2)5, where M = Nb, Ta] to form cyclometalated complexes of the type [N2PCN-κ(5)-N,N,P,C,N]M(NMe2) (2-M). Apart from the three amido donors, one benzylic position of the ligand backbone is deprotonated over the course of this reaction, resulting in the formation of a new M-C bond. As a consequence, a metallaziridine substructure is formed, and the triamidophosphine moiety thus serves as a tetraanionic pentadentate ligand. The dimethylamido complexes 2-M can be converted into the corresponding triflates [N2PCN-κ(5)-N,N,P,C,N]M(OTf) (3-M) and alkyl complexes [N2PCN-κ(5)-N,N,P,C,N]M(CH2SiMe3) (4-M) by treatment with triethylsilyl triflate (Et3SiO3SCF3) followed by (trimethylsilyl)methyllithium (LiCH2SiMe3). The alkyl complexes exhibit interesting reactivities, including a second cyclometalative backbone activation affording the trimethylphosphine-stabilized complexes [NP(CN)2-κ(6)-N,P,C,N,C,N]M(PMe3) (5-M). In the case of tantalum, the formation of a dinuclear hydrido complex (6) is observed upon hydrogenation of 4-Ta. In the case of niobium, the metallaziridine substructure in 4-Nb is prone to ring opening via protonation with triphenylsilylamine (Ph3SiNH2), resulting in formation of the corresponding imido complex [PN3-κ(4)-P,N,N,N]Nb=NSiPh3 (7).
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Affiliation(s)
- Malte Sietzen
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 276, 69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 276, 69120 Heidelberg, Germany
| | - Joachim Ballmann
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 276, 69120 Heidelberg, Germany
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3
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Galájov M, Garcı́a C, Gómez M, Gómez-Sal P, Temprado M. Synthesis and DFT, Multinuclear Magnetic Resonance, and X-ray Structural Studies of Iminoacyl Imido Hydridotris(3,5-dimethylpyrazolyl)borate Niobium and Tantalum(V) Complexes. Organometallics 2014. [DOI: 10.1021/om5002028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Miguel Galájov
- Centro de Espectroscopia de RMN, ‡Departamento de Quı́mica Orgánica
y Quı́mica Inorgánica and §Departamento de Quı́mica
Analítica, Quı́mica Física e Ingeniería
Quı́mica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Carlos Garcı́a
- Centro de Espectroscopia de RMN, ‡Departamento de Quı́mica Orgánica
y Quı́mica Inorgánica and §Departamento de Quı́mica
Analítica, Quı́mica Física e Ingeniería
Quı́mica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Manuel Gómez
- Centro de Espectroscopia de RMN, ‡Departamento de Quı́mica Orgánica
y Quı́mica Inorgánica and §Departamento de Quı́mica
Analítica, Quı́mica Física e Ingeniería
Quı́mica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Pilar Gómez-Sal
- Centro de Espectroscopia de RMN, ‡Departamento de Quı́mica Orgánica
y Quı́mica Inorgánica and §Departamento de Quı́mica
Analítica, Quı́mica Física e Ingeniería
Quı́mica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Manuel Temprado
- Centro de Espectroscopia de RMN, ‡Departamento de Quı́mica Orgánica
y Quı́mica Inorgánica and §Departamento de Quı́mica
Analítica, Quı́mica Física e Ingeniería
Quı́mica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain
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4
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Galájov M, García C, Gómez M, Gómez-Sal P. Alkyl chlorido hydridotris(3,5-dimethylpyrazolyl)borate imido niobium and tantalum(V) complexes: synthesis, conformational states of alkyl groups in solid and solution, X-ray diffraction and multinuclear magnetic resonance spectroscopy studies. Dalton Trans 2014; 43:5747-58. [PMID: 24573068 DOI: 10.1039/c3dt53353k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The alkylation of the starting pseudooctahedral dichlorido imido hydridotris(3,5-dimethylpyrazolyl)borate niobium and tantalum(v) compounds [MTp*Cl2(NtBu)] (M = Nb,Ta; Tp* = BH(3,5-Me2C3HN2)3) with MgClR in different conditions led to new alkyl chlorido imido derivatives [MTp*ClR(NtBu)] (M = Nb/Ta, R = CH2CH31a/1b, CH2Ph 2a/2b, CH2tBu 3a/3b, CH2SiMe34a/4b, CH2CMe2Ph 5a/5b), whereas the dimethyl derivatives [MTp*Me2(NtBu)] (M = Nb 6a, Ta 6b) could be isolated as unitary species when the reaction was carried out using 2 equivalents of the magnesium reagent MgClMe. However, the chlorido methyl [MTp*ClMe(NtBu)] (M = Nb 7a, Ta 7b) complexes were obtained by heating at 50 °C the dichlorido and dimethyl imido complexes mixtures in a 1 : 1 ratio. All of the complexes were studied by multinuclear magnetic resonance spectroscopy and the molecular structures of 1b, 2a/b, 3a/b, 4a and 5a/b were determined by X-ray diffraction methods. In the solid state the complexes 1b, 4a and 5a exhibit only a gauche-anti conformation and the complexes 2a/b, 3a/b and 5b exhibit only a gauche-syn conformation of the alkyl substituents, whereas both conformational states, which do not show mutual exchange in the NMR time scale, were observed for 3a/b in a benzene-d6 solution. The (15)N chemical shifts of the complexes 1-7 are discussed.
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Affiliation(s)
- Miguel Galájov
- Centro de Espectroscopia de RMN, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Spain
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5
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Neogi SG, Das A, Chaudhury P. Investigation of plausible mechanistic pathways in hydrogenation of η⁵-(C₅H₅)₂Ta(H)=CH₂: an analysis using DFT and AIM techniques. J Mol Model 2014; 20:2132. [PMID: 24549793 DOI: 10.1007/s00894-014-2132-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 12/27/2013] [Indexed: 11/29/2022]
Abstract
In this manuscript, we investigate two plausible pathways for addition of H₂ across the bond Ta=C in η⁵-(C₅H₅)₂Ta(H)=CH₂. One of the investigated reaction pathways involves a single concerted step with a four-membered transition state keeping the oxidation state of tantalum unaltered, where as the other pathway deals with a two step reaction with α-insertion of H₂ to produce a 16e⁻ Ta(III)-methyl species and a subsequent oxidative addition. We must emphasize that an experimental study by Bregel et al. [J Am Chem Soc 2002, 124:13827-13832] on a derivative of the investigated chemical system in the present study showed that the two step strategy of α-insertion followed by subsequent oxidative addition is the preferred one. Our numerical investigations using DFT and AIM calculations lead to a similar conclusion. To establish our conclusion, we employ various basis sets to obtain the free energy of activation of the reaction. The AIM technique especially helps us to characterize the bond critical points at the optimized geometries of the reactants, products, transition states, and intermediates for the two step mechanism.
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Affiliation(s)
- Soumya Ganguly Neogi
- Department of Chemistry, University of Calcutta, 92, A. P. C Road, Kolkata, 700009, India
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6
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Elorriaga D, Carrillo-Hermosilla F, Antiñolo A, López-Solera I, Fernández-Galán R, Serrano A, Villaseñor E. Synthesis, Characterization and Reactivity of New Dinuclear Guanidinate Diimidoniobium Complexes. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300025] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Fernández-Galán R, Antiñolo A, Carrillo-Hermosilla F, López-Solera I, Otero A, Serrano-Laguna A, Villaseñor E. Migratory Insertion Reactions in Asymmetrical Guanidinate-Supported Zirconium Complexes. Organometallics 2012. [DOI: 10.1021/om300942p] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Rafael Fernández-Galán
- Departamento de Quı́mica
Inorgánica, Orgánica y Bioquı́mica, Facultad de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, Campus Universitario
de Ciudad Real, 13071-Ciudad Real, Spain
| | - Antonio Antiñolo
- Departamento de Quı́mica
Inorgánica, Orgánica y Bioquı́mica, Facultad de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, Campus Universitario
de Ciudad Real, 13071-Ciudad Real, Spain
| | - Fernando Carrillo-Hermosilla
- Departamento de Quı́mica
Inorgánica, Orgánica y Bioquı́mica, Facultad de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, Campus Universitario
de Ciudad Real, 13071-Ciudad Real, Spain
| | - Isabel López-Solera
- Departamento de Quı́mica
Inorgánica, Orgánica y Bioquı́mica, Facultad de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, Campus Universitario
de Ciudad Real, 13071-Ciudad Real, Spain
| | - Antonio Otero
- Departamento de Quı́mica
Inorgánica, Orgánica y Bioquı́mica, Facultad de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, Campus Universitario
de Ciudad Real, 13071-Ciudad Real, Spain
| | - Amparo Serrano-Laguna
- Departamento de Quı́mica
Inorgánica, Orgánica y Bioquı́mica, Facultad de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, Campus Universitario
de Ciudad Real, 13071-Ciudad Real, Spain
| | - Elena Villaseñor
- Departamento de Quı́mica
Inorgánica, Orgánica y Bioquı́mica, Facultad de Ciencias y Tecnologías Quı́micas, Universidad de Castilla-La Mancha, Campus Universitario
de Ciudad Real, 13071-Ciudad Real, Spain
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8
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Lauzon JMP, Schafer LL. Tantallaaziridines: from synthesis to catalytic applications. Dalton Trans 2012; 41:11539-50. [PMID: 22728652 DOI: 10.1039/c2dt30781b] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tantallaaziridines are a class of organometallic compounds containing three-membered rings that include a tantalum, carbon and nitrogen atom. Closely related complexes containing the related iminoacyl ligand can be used as starting materials for tantallaaziridine synthesis. Tantallaaziridines can also be synthesized by reduction of imines or β-hydrogen abstraction of amides to give stable, isolable complexes. Tantallaaziridines possess a reactive Ta-C bond that can undergo stoichiometric transformations with unsaturated organic molecules to give new organometallic products. Upon quenching of such reactions with aqueous workup, selectively substituted small molecule amines can be prepared. Tantallaaziridines have also been proposed as catalytic intermediates in the direct α-alkylation of amines, hydroaminoalkylation, by exploiting the β-hydrogen abstraction route to regenerate the catalytically active species. Recent progress and remaining challenges in the field will be discussed.
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Affiliation(s)
- Jean Michel P Lauzon
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, B.C., Canada V6T 1Z1
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9
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Khalimon AY, Shirobokov OG, Peterson E, Simionescu R, Kuzmina LG, Howard JA, Nikonov GI. Mechanistic Aspects of Hydrosilylation Catalyzed by (ArN=)Mo(H)(Cl)(PMe3)3. Inorg Chem 2012; 51:4300-13. [DOI: 10.1021/ic300010c] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrey Y. Khalimon
- Chemistry Department, Brock University, 500 Glenridge Avenue, St. Catharines,
Ontario L2S 3A1, Canada
| | - Oleg G. Shirobokov
- Chemistry Department, Brock University, 500 Glenridge Avenue, St. Catharines,
Ontario L2S 3A1, Canada
| | - Erik Peterson
- Chemistry Department, Brock University, 500 Glenridge Avenue, St. Catharines,
Ontario L2S 3A1, Canada
| | - Razvan Simionescu
- Chemistry Department, Brock University, 500 Glenridge Avenue, St. Catharines,
Ontario L2S 3A1, Canada
| | - Lyudmila G. Kuzmina
- N.S. Kurnakov Institute of General and Inorganic Chemistry, 31 Leninskii Prospekt,
Moscow, 119991, Russia
| | - Judith A.K. Howard
- Chemistry
Department, University of Durham, South
Road, Durham DH1 3LE, United
Kingdom
| | - Georgii I. Nikonov
- Chemistry Department, Brock University, 500 Glenridge Avenue, St. Catharines,
Ontario L2S 3A1, Canada
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10
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Horrillo-Martinez P, Patrick BO, Schafer LL, Fryzuk MD. Oxygen extrusion from amidate ligands to generate terminal Ta=O units under reducing conditions. How to successfully use amidate ligands in dinitrogen coordination chemistry. Dalton Trans 2012; 41:1609-16. [PMID: 22146773 DOI: 10.1039/c1dt11595b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of mixed Cp* amidate tantalum complexes Cp*Ta(RNC(O)R')X(3) (where R = Me(2)C(6)H(3), (i)Pr, R' = (t)Bu, Ph, X = Cl, Me) have been prepared via salt metathesis and their fundamental reactivities under reducing conditions have been explored. Reaction of the tantalum chloro precursors with potassium graphite under N(2) or Ar leads to the stereoselective formation of the terminal tantalum oxo species, Cp*Ta=O(η(2)-RN=CR')Cl. This represents the formal extrusion of oxygen from the amidate ligand to the reduced tantalum center and is accompanied by the formation of the iminoacyl fragment bound to Ta(v). Amidate dinitrogen complexes, [Cp*TaCl(RNC(O)(t)Bu)](2)(μ-N(2)) (where R = Me(2)C(6)H(3), (i)Pr) were synthesized via salt metathesis from the known [Cp*TaCl(2)](2)(μ-N(2)) precursor, establishing that amidate ligands can support dinitrogen complexes, but not the reduction process often necessary for their synthesis.
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Affiliation(s)
- Patricia Horrillo-Martinez
- Department of Chemistry, The University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada
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11
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Galajov M, García C, Gómez M. Tri-chlorido, 2-methylallyl and 2-butenyl tert-butylimido niobium and tantalum complexes: Synthesis, multinuclear NMR spectroscopy and reactivity. Dalton Trans 2011; 40:413-20. [DOI: 10.1039/c0dt00878h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Galajov M, García C, Gómez M, Gómez-Sal P. Trialkyl imido niobium and tantalum compounds: synthesis, structural study and migratory insertion reactions. Dalton Trans 2011; 40:2797-804. [DOI: 10.1039/c0dt01449d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Galajov M, Galindo A, García C, Gómez M, Gómez-Sal P, Parra A. Synthetic and structural studies of monocyclopentadienyl cyclometalated aryl tantalum(v) compounds. Dalton Trans 2011; 40:8399-406. [DOI: 10.1039/c1dt10223k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Sánchez-Nieves J, Frutos LM, Royo P, Castaño O, Herdtweck E, Mosquera MEG. Trapping unstable terminal M-O multiple bonds of monocyclopentadienyl niobium and tantalum complexes with Lewis acids. Inorg Chem 2010; 49:10642-8. [PMID: 20949930 DOI: 10.1021/ic1016609] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydrolysis of [NbCp'Cl(4)] (Cp' = η(5)-C(5)H(4)SiMe(3)) with the water adduct H(2)O·B(C(6)F(5))(3) afforded the oxo-borane compound [NbCp'Cl(2){O·B(C(6)F(5))(3)}] (2a). This compound reacted with [MgBz(2)(THF)(2)] giving [NbCp'Bz(2){O·B(C(6)F(5))(3)}] (2b), whereas [NbCp'Me(2){O·B(C(6)F(5))(3)}] (2c) was obtained from the reaction of [NbCp'Me(4)] with H(2)O·B(C(6)F(5))(3). Addition of Al(C(6)F(5))(3) to solutions containing the oxo-borane compounds [MCp(R)X(2){O·B(C(6)F(5))(3)}] (M = Ta, Cp(R) = η(5)-C(5)Me(5) (Cp*), X = Cl 1a, Bz 1b, Me 1c; M = Nb, Cp(R) = Cp', X = Cl 2a) afforded the oxo-alane complexes [MCp(R)X(2){O·Al(C(6)F(5))(3)}] (M = Ta, Cp(R) = Cp*, X = Cl 3a, Bz 3b, Me 3c; M = Nb, Cp(R) = Cp', X = Cl 4a), releasing B(C(6)F(5))(3). Compound 3a was also obtained by addition of Al(C(6)F(5))(3) to the dinuclear μ-oxo compound [TaCp*Cl(2)(μ-O)](2), meanwhile addition of the water adduct H(2)O·Al(C(6)F(5))(3) to [TaCp*Me(4)] gave complex 3c. The structure of 2a and 3a was obtained by X-ray diffraction studies. Density functional theory (DFT) calculations were carried out to further understand these types of oxo compounds.
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Affiliation(s)
- Javier Sánchez-Nieves
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, E-28871 Alcalá de Henares, Madrid, Spain.
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15
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Bose SK, Geetharani K, Varghese B, Ghosh S. Unusual Organic Chemistry of a Metallaborane Substrate: Formation of a Tantalaborane Complex with a Bridging Acyl Group (μ-η2). Inorg Chem 2010; 49:6375-7. [DOI: 10.1021/ic1004962] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Babu Varghese
- Sophisticated Analytical Instruments Facility, Indian Institute of Technology Madras, Chennai 600 036, India
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16
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García C, Gómez M, Gómez-Sal P, Hernández JM. Monocyclopentadienyl(niobium) Compounds with Imido and Silsesquioxane Ligands: Synthetic, Structural and Reactivity Studies. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900571] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Tomson NC, Yan A, Arnold J, Bergman RG. An unusally diverse array of products formed upon carbonylation of a dialkylniobium complex. J Am Chem Soc 2008; 130:11262-3. [PMID: 18671347 DOI: 10.1021/ja803729k] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of carbon monoxide with a beta-diketiminato dimethyl niobium complex (BDI)Me2Nb(NtBu) is shown to lead to a variety of products whose distribution displays a remarkable dependence on the reaction conditions. Among these, the products of metal reduction, enediolate formation, and intramolecular C-H activation have been fully characterized. An investigation into the individual steps leading to these products points to a transient initial monoacyl complex, whose fate may be perturbed via reaction conditions to allow for control over the product distribution. Furthermore, the reaction of (BDI)Me2Nb(NCMe3) with XylNC (Xyl = 2,6-Me2C6H3) yields the eta2-ketimine complex (BDI)(Me2C=NXyl)Nb(NCMe3), whose characterization and reactivity enhance our understanding of the sequences involving CO.
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Affiliation(s)
- Neil C Tomson
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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18
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Synthesis of new chloro methyl niobium and tantalum complexes with silyl-cyclopentadienyl ligands: X-ray crystal structure of [Ta{η5-C5H3(SiMe3)2}Cl2Me2]. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.01.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Gómez M, Gómez‐Sal P, Hernández JM. New Bis(silyl)cyclopentadienidoniobium and ‐tantalum Complexes:X‐ray Crystal Structures of [NbCp∧Cl
4
] and [NbCp∧Cl
4
(CNAr)][Cp∧ = η
5
‐C
5
H
3
(SiClMe
2
)(SiMe
3
); Ar = 2,6‐Me
2
C
6
H
3
]. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600633] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Manuel Gómez
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, 28871 Alcalá de Henares, Spain, Fax: +34‐91‐885‐46‐83
| | - Pilar Gómez‐Sal
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, 28871 Alcalá de Henares, Spain, Fax: +34‐91‐885‐46‐83
| | - José Manuel Hernández
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, 28871 Alcalá de Henares, Spain, Fax: +34‐91‐885‐46‐83
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20
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21
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Sánchez-Nieves J, Royo P, Mosquera MEG. η2-Iminoacyl and η2-Acyl Monocyclopentadienyl Tantalum Complexes Bearing Oxo and Oxo-Borane Ligands. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200500643] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Galakhov MV, Gómez M, Gómez-Sal P, Velasco P. Alkylation, Insertion of Isocyanides, and Intramolecular Rearrangement Processes in Azatantalacyclopentene Complexes. X-ray Crystal Structure of [TaCp*Me2(CHCHCMe2NAr-κ2C,N)] (Cp* = η5-C5Me5; Ar = 2,6-Me2C6H3). Organometallics 2005. [DOI: 10.1021/om050289z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mikhail V. Galakhov
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Centro de Espectroscopia de RMN, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Manuel Gómez
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Centro de Espectroscopia de RMN, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Pilar Gómez-Sal
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Centro de Espectroscopia de RMN, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Patricia Velasco
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Centro de Espectroscopia de RMN, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain
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23
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Galakhov MV, Gómez M, Gómez-Sal P, Velasco P. Alkylation and Insertion Reactions in Dichloro Azatantalacyclopropane Complexes. X-ray Crystal Structures of [TaCpCl2{C(Ph)CHCMe2NAr-κ2C,N}] (Cp = η5-C5Me5, η5-C5H4SiMe3; Ar = 2,6-Me2C6H3). Organometallics 2005. [DOI: 10.1021/om049110v] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mikhail V. Galakhov
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Centro de Espectroscopia de RMN, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Manuel Gómez
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Centro de Espectroscopia de RMN, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Pilar Gómez-Sal
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Centro de Espectroscopia de RMN, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain
| | - Patricia Velasco
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Centro de Espectroscopia de RMN, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain
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24
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Isocyanide insertion reactivity of dinuclear niobium and tantalum imido complexes: X-ray crystal structure of [{Nb(η5-C5H4SiMe3)(CH2Ph)2}2(μ-1,4-NC6H4N)]. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.01.029] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Gómez M. (Alkyl)(monocyclopentadienyl)niobium and ‐tantalum Complexes in Insertion Processes. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300207] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Manuel Gómez
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, 28871 Alcalá de Henares, Spain Fax: (internat.) + 34‐91/885‐4683
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26
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Martins AM, Ascenso JR, de Azevedo CG, Dias AR, Duarte MT, da Silva JF, Veiros LF, Rodrigues SS. Insertion of Isocyanides into Group 4 Metal−Carbon and Metal−Nitrogen Bonds. Syntheses and DFT Calculations. Organometallics 2003. [DOI: 10.1021/om030211n] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ana M. Martins
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais no. 1, 1049-001 Lisboa, Portugal
| | - José R. Ascenso
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais no. 1, 1049-001 Lisboa, Portugal
| | - Cristina G. de Azevedo
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais no. 1, 1049-001 Lisboa, Portugal
| | - Alberto R. Dias
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais no. 1, 1049-001 Lisboa, Portugal
| | - M. Teresa Duarte
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais no. 1, 1049-001 Lisboa, Portugal
| | - João F. da Silva
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais no. 1, 1049-001 Lisboa, Portugal
| | - Luís F. Veiros
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais no. 1, 1049-001 Lisboa, Portugal
| | - Sandra S. Rodrigues
- Centro de Química Estrutural, Instituto Superior Técnico, Avenida Rovisco Pais no. 1, 1049-001 Lisboa, Portugal
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27
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del Hierro I, Fernández-Galán R, Prashar S, Antiñolo A, Fajardo M, Rodríguez A, Otero A. The Reactivity of Allyl and Olefin-Hydride Niobocene Derivatives Towards Isocyanides. X-ray Crystal Structure of [Nb(η5-C5H4SiMe3)2{η3-CH(R)CHCH(R)}] (R = SiMe2tBu). Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200300053] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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28
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Antiñolo A, Fajardo M, Otero A, Prashar S. Sandwich and Half‐Sandwich (Imido)niobium Complexes. Eur J Inorg Chem 2002. [DOI: 10.1002/ejic.200390000] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Antonio Antiñolo
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Químicas, Campus Universitario, Universidad de Castilla‐La Mancha, 13071 Ciudad Real, Spain, Fax: (internat.) + 34‐926/295‐318
| | - Mariano Fajardo
- Departamento de Ciencias Experimentales e Ingeniería, E.S.C.E.T., Universidad Rey Juan Carlos, 28933 Móstoles (Madrid), Spain
| | - Antonio Otero
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Químicas, Campus Universitario, Universidad de Castilla‐La Mancha, 13071 Ciudad Real, Spain, Fax: (internat.) + 34‐926/295‐318
| | - Sanjiv Prashar
- Departamento de Ciencias Experimentales e Ingeniería, E.S.C.E.T., Universidad Rey Juan Carlos, 28933 Móstoles (Madrid), Spain
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29
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Gavenonis J, Tilley TD. Tantalum Alkyl and Silyl Complexes of the Bulky (Terphenyl)imido Ligand [2,6-(2,4,6-Me3C6H2)2C6H3N]2- ([Ar*N]2-). Generation and Reactivity of [(Ar*N)(Ar*NH)Ta(H)(OSO2CF3)], Which Reversibly Transfers Hydride to an Aromatic Ring of the Arylamide Ligand. Organometallics 2002. [DOI: 10.1021/om020509y] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- John Gavenonis
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460
| | - T. Don Tilley
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720-1460
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30
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Galindo A, Gómez M, Río D, Sánchez F. Synthesis and Reactivity of Ene-Diamido and Ene-Diolato [(Trimethylsilyl)cyclopentadienyl]niobium(V) Complexes and a Comparative DFT Study of the Bonding Capabilities of Diazabutadiene and Butadiene Ligands. Eur J Inorg Chem 2002. [DOI: 10.1002/1099-0682(200206)2002:6%3c1326::aid-ejic1326%3e3.0.co%3b2-t] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Galindo A, Gómez M, Río D, Sánchez F. Synthesis and Reactivity of Ene-Diamido and Ene-Diolato [(Trimethylsilyl)cyclopentadienyl]niobium(V) Complexes and a Comparative DFT Study of the Bonding Capabilities of Diazabutadiene and Butadiene Ligands. Eur J Inorg Chem 2002. [DOI: 10.1002/1099-0682(200206)2002:6<1326::aid-ejic1326>3.0.co;2-t] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Castro A, Galakhov M, Gómez M, Gómez-Sal P, Martín A. Synthesis of Hydride Tantalabenzocyclopentene and µ-Alkylidene Complexes by Direct Alkylation Reactions of [TaCp*Cp′Cl2] − NMR Spectroscopic Study and X-ray Crystal Structure of [TaCp*Cp′(H)(η2-CH2-CMe2-o-C6H4)], (Cp* = η5-C5Me5; Cp′ = η5-C5H4SiMe3). Eur J Inorg Chem 2002. [DOI: 10.1002/1099-0682(200206)2002:6<1336::aid-ejic1336>3.0.co;2-r] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Galindo A, Gómez M, Gómez-Sal P, Martín A, del Río D, Sánchez F. Alkyl Alkyne Mono((trimethylsilyl)cyclopentadienyl) Niobium Complexes. Synthesis and Chemical Behavior in Insertion Processes. X-ray Crystal Structures of [NbCp‘(CH2SiMe3)2(Me3SiCCSiMe3)] and [NbCp‘(NAr){η4-CH(SiMe3)C(SiMe3)C(CH2SiMe3)CH(SiMe3)}], (Cp‘ = η5-C5H4SiMe3, Ar = 2,6-Me2C6H3). DFT Studies of the Model Complexes [Nb(η5-C5H5)R2(HCCH)] (R = Cl, Me). Organometallics 2001. [DOI: 10.1021/om010521a] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Agustín Galindo
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo. 553, E-41071 Sevilla, Spain
| | - Manuel Gómez
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo. 553, E-41071 Sevilla, Spain
| | - Pilar Gómez-Sal
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo. 553, E-41071 Sevilla, Spain
| | - Avelino Martín
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo. 553, E-41071 Sevilla, Spain
| | - Diego del Río
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo. 553, E-41071 Sevilla, Spain
| | - Fernando Sánchez
- Departamento de Química Inorgánica, Universidad de Alcalá de Henares, Campus Universitario, E-28871 Alcalá de Henares, Spain, and Departamento de Química Inorgánica, Universidad de Sevilla, Aptdo. 553, E-41071 Sevilla, Spain
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Matsuo Y, Mashima K, Tani K. Intramolecular Coupling Reaction of 1-Aza-1,3-butadiene Ligand and Iminoacyl Ligand Giving Amido−Imido Complexes of Tantalum. Organometallics 2001. [DOI: 10.1021/om010724z] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yutaka Matsuo
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazuhide Tani
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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35
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36
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Fandos R, Hernández C, López-Solera I, Otero A, Rodríguez A, Ruiz MJ, Terreros P. New Monocyclopentadienyl Complexes of Tantalum with Dithiolate Ligands. Crystal and Molecular Structures of Cp*TaCl2(SCH2CH2)2S, Cp*TaMe2(SCH2CH2)2O, Cp*TaMe2(SCH2CH2)2S, and Cp*Ta(xylylNC(Me)2CNxylyl)(SCH2CH2)2O (Cp* = η5-C5Me5). Organometallics 2000. [DOI: 10.1021/om000626y] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rosa Fandos
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avd. Carlos III, s/n 45071 Toledo, Spain, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus de Ciudad Real, 13071 Ciudad Real, Spain, and ETS Ingenieros Industriales, Avd. Camilo José Cela, 3, 13071 Ciudad Real, Spain
| | - Carolina Hernández
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avd. Carlos III, s/n 45071 Toledo, Spain, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus de Ciudad Real, 13071 Ciudad Real, Spain, and ETS Ingenieros Industriales, Avd. Camilo José Cela, 3, 13071 Ciudad Real, Spain
| | - Isabel López-Solera
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avd. Carlos III, s/n 45071 Toledo, Spain, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus de Ciudad Real, 13071 Ciudad Real, Spain, and ETS Ingenieros Industriales, Avd. Camilo José Cela, 3, 13071 Ciudad Real, Spain
| | - Antonio Otero
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avd. Carlos III, s/n 45071 Toledo, Spain, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus de Ciudad Real, 13071 Ciudad Real, Spain, and ETS Ingenieros Industriales, Avd. Camilo José Cela, 3, 13071 Ciudad Real, Spain
| | - Ana Rodríguez
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avd. Carlos III, s/n 45071 Toledo, Spain, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus de Ciudad Real, 13071 Ciudad Real, Spain, and ETS Ingenieros Industriales, Avd. Camilo José Cela, 3, 13071 Ciudad Real, Spain
| | - Maria José Ruiz
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias del Medio Ambiente, Universidad de Castilla-La Mancha, Avd. Carlos III, s/n 45071 Toledo, Spain, Facultad de Químicas, Universidad de Castilla-La Mancha, Campus de Ciudad Real, 13071 Ciudad Real, Spain, and ETS Ingenieros Industriales, Avd. Camilo José Cela, 3, 13071 Ciudad Real, Spain
| | - Pilar Terreros
- Instituto de Catálisis y Petroleoquímica, CSIC, Cantoblanco, 28049 Madrid, Spain
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