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Kucera BE, Young VG, Brennessel WW, Ellis JE. Syntheses and crystal structures of new naphthalene– and anthracene–vanadate salts and an unprecedented dimetallabis(anthracene) sandwich complex: [Na(tetrahydrofuran)3][V2(anthracene)2]. ACTA CRYSTALLOGRAPHICA SECTION C STRUCTURAL CHEMISTRY 2022; 78:148-163. [DOI: 10.1107/s2053229622001255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 02/01/2022] [Indexed: 11/10/2022]
Abstract
Reduction of bis(naphthalene)vanadium(0) by potassium naphthalene (KNp) in tetrahydrofuran (THF) provides a highly reactive, thermolabile, and so far unisolable brown substance, which affords the first reported derivatives of bis(naphthalene)vanadates. From these solutions, thermally stable (298 K) and structurally characterized compounds have been obtained, including dark-red rods of catena-poly[bis(μ3-η4:η6:η4-naphthalene)tetrakis(tetrahydrofuran)dipotassiumvanadium], [K2V(C4H8O)4(C10H8)2]
n
or [K(THF)2]2[V(C10H8)2] (3), and red plates of (4,7,13,16,21,24-hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane)potassium [1,2-bis(dimethylphosphanyl)ethane]bis(η4-naphthalene)vanadium tetrahydrofuran monosolvate, [K(C18H36N2O6)][V(C10H8)2(C6H16P2)]·C4H8O or [K([2.2.2]cryptand)][V(C10H8)2(dmpe)]·THF [dmpe is 1,2-bis(dimethylphosphanyl)ethane] (4b). Notably, [V(C10H8)2]2− is the only example of a structurally authenticated homoleptic bis(arene)metallate dianion and was obtained by further reduction of the brown material by KNp in THF, in the presence of trimethylphosphane (PMe3). Addition of anthracene (An) to the brown material in THF afforded deep-violet and paramagnetic crystalline (1,4,7,10,13,16-hexaoxacyclooctadecane)bis(tetrahydrofuran)potassium [(η4-anthracene)(tetrahydrofuran)vanadium]-μ-η4:η2-anthracene-[(1,4,7,10,13,16-hexaoxacyclooctadecane)potassium]-μ-η2:η4-anthracene-[(η4-anthracene)(tetrahydrofuran)vanadium] tetrahydrofuran disolvate, [K(C12H24O6)(C4H8O)2][KV2(C12H24O6)(C4H8O)2(C14H10)4]·2C4H8O or [K(18-crown-6)][K(18-crown-6)(THF)2][V(C14H10)2(THF)]2·2(THF) (5), which readily reacted with PMe3 and dmpe to give new vanadate salts. These were structurally characterized as (1,4,7,10,13,16-hexaoxacyclooctadecane)bis(tetrahydrofuran)potassium bis(η4-anthracene)(trimethylphosphane)vanadium tetrahydrofuran monosolvate, [K(C12H24O6)(C4H8O)2][V(C14H10)2(C3H9P)]·C4H8O or [K(18-crown-6)(THF)2][V(C14H10)2(PMe3)]·THF (6), and tetrakis(1,2-dimethoxyethane)potassium bis(η4-anthracene)[1,2-bis(dimethylphosphanyl)ethane]vanadium, [K(C4H10O2)4][V(C14H10)2(C6H16P2)] or [K(DME)4][V(C14H10)2(dmpe)] (DME is 1,2-dimethoxyethane) (7b). The last three structures contain the first known bis(anthracene)vanadates and are thereby derivatives of the unknown bis(anthracene)vanadium(0). Attempts to obtain the sodium salt analog of 5 in THF resulted instead in the formation of a unique substance, (μ3-η6:η6:η6-anthracene)(μ2-η6:η6-anthracene)tris(tetrahydrofuran)sodiumdivanadium, [NaV2(C14H10)2(C4H8O)3] or [Na(THF)3][V2(C14H10)2] (8), containing the first reported dimetallabis(anthracene) sandwich compound.
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Zanchin G, Gavezzoli A, Bertini F, Ricci G, Leone G. Homo- and Copolymerization of Ethylene with Norbornene Catalyzed by Vanadium(III) Phosphine Complexes. Molecules 2019; 24:molecules24112088. [PMID: 31159332 PMCID: PMC6600629 DOI: 10.3390/molecules24112088] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 11/16/2022] Open
Abstract
Herein, we report the homo- and co-polymerization of ethylene (E) with norbornene (NB) catalyzed by vanadium(III) phosphine complexes of the type VCl3(PMenPh3-n)2 [n = 2 (1a), 1 (1b)] and VCl3(PR3)2 [R = phenyl (Ph, 1c), cyclohexyl (Cy, 1d), tert-butyl (tBu, 1e)]. In the presence of Et2AlCl and Cl3CCOOEt (ETA), 1a-1e exhibit good activities for the polymerization of ethylene, affording linear, semicrystalline PEs with a melting temperature of approximately 130 °C. Mainly alternating copolymers with high comonomer incorporation were obtained in the E/NB copolymerization. A relationship was found between the electronic and steric properties of the phosphine ligands and the catalytic performance. Overall, the presence of electron-withdrawing ligand substituents increases the productivity, complexes with aryl phosphine (weaker σ-donor character) exhibiting a higher (co)polymerization initiation rate than those with alkyl phosphines (stronger σ-donor character). Steric effects also seem to play a key role since 1d and 1e, having large size phosphines (PCy3 θ = 170° and PtBu3 θ = 182°, respectively) are more active than 1a (PMe2Ph θ = 122°). In this case, the larger size of PtBu3 and PCy3 likely compensates for their higher donor strength compared to PMe2Ph.
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Affiliation(s)
- Giorgia Zanchin
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
| | - Alessia Gavezzoli
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
| | - Fabio Bertini
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
| | - Giovanni Ricci
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
| | - Giuseppe Leone
- CNR-Istituto per lo Studio delle Macromolecole (ISMAC), via A. Corti 12, I-20133 Milano, Italy.
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Synthesis, Structure and 1,3-Butadiene Polymerization Behavior of Vanadium(III) Phosphine Complexes. Catalysts 2017. [DOI: 10.3390/catal7120369] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Bhattacharya P, Prokopchuk DE, Mock MT. Exploring the role of pendant amines in transition metal complexes for the reduction of N2 to hydrazine and ammonia. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.07.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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5
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Vanadium(III)–catalyzed copolymerization of ethylene with norbornene: Microstructure at tetrad level and reactivity ratios. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Egbert JD, Labios LA, Darmon JM, Piro NA, Scott Kassel W, Mock MT. Synthesis and Structure of Vanadium Halide Complexes Containing Diphosphine Ligands with Pendant Amines. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501477] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jonathan D. Egbert
- Center for Molecular Electrocatalysis, Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA, http://www.pnl.gov/science/staff/staff_info.asp?staff_num=7137
| | - Liezel A. Labios
- Center for Molecular Electrocatalysis, Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA, http://www.pnl.gov/science/staff/staff_info.asp?staff_num=7137
| | - Jonathan M. Darmon
- Center for Molecular Electrocatalysis, Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA, http://www.pnl.gov/science/staff/staff_info.asp?staff_num=7137
| | - Nicholas A. Piro
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, USA
| | - W. Scott Kassel
- Department of Chemistry, Villanova University, Villanova, Pennsylvania 19085, USA
| | - Michael T. Mock
- Center for Molecular Electrocatalysis, Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, USA, http://www.pnl.gov/science/staff/staff_info.asp?staff_num=7137
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Johnson CE, Kysor EA, Findlater M, Jasinski JP, Metell AS, Queen JW, Abernethy CD. The synthesis and characterization of [IMesH]+[(η3-C5H5)V(N)Cl2]−: An anionic vanadium(v) complex with a terminal nitrido ligand. Dalton Trans 2010; 39:3482-8. [DOI: 10.1039/b922744j] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ignatov SK, Rees NH, Merkoulov AA, Dubberley SR, Razuvaev AG, Mountford P, Nikonov GI. Non-Innocent Behaviour of Imido Ligands in the Reactions of Silanes with Half-Sandwich Imido Complexes of Nb and V: A Silane/Imido Coupling Route to Compounds with Nonclassical SiH Interactions. Chemistry 2007; 14:296-310. [PMID: 17899558 DOI: 10.1002/chem.200700271] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Reactions of imido complexes [M(Cp)(=NR')(PR''3)2] (M=V, Nb) with silanes afford a plethora of products, depending on the nature of the metal, substitution at silicon and nitrogen and the steric properties of the phosphine. The main products are [M(Cp)(=NR')(PR3)(H)(SiRnCl3-n)] (M=V, Nb; R'=2,6-diisopropylphenyl (Ar), 2,6-dimethylphenyl (Ar')), [Nb(Cp)(=NR')(PR''3)(H)(SiPhR2)] (R2=MeH, H2), [Nb(Cp)(==NR')(PR''3)(Cl)(SiHRnCl2-n)] and [Nb(Cp)(eta 3-N(R)SiR2--H...)(PR''3)(Cl)]. Complexes with the smaller Ar' substituent at nitrogen react faster, as do more acidic silanes. Bulkier groups at silicon and phosphorus slow down the reaction substantially. Kinetic NMR experiments supported by DFT calculations reveal an associative mechanism going via an intermediate N-silane adduct [Nb(Cp){=N(-->SiHClR2)R'}(PR''3)2] bearing a penta-coordinate silicon centre, which then rearranges into the final products through a Si--H or Si--Cl bond activation process. DFT calculations show that this imido-silane adduct is additionally stabilized by a Si--HM agostic interaction. Si--H activation is kinetically preferred even when Si--Cl activation affords thermodynamically more stable products. The niobium complexes [NbCp(=NAr)(PMe3)(H)(SiR2Cl)] (R=Ph, Cl) are classical according to X-ray studies, but DFT calculations suggest the presence of interligand hypervalent interactions (IHI) in the model complex [Nb(Cp) (==NMe)(PMe3)(H)(SiMe2Cl)]. The extent of Si--H activation in the beta-Si--HM agostic complexes [Cp{eta 3-N(R')SiR2--H}M(PR''3)(Cl)] (R''=PMe3, PMe2Ph) primarily depends on the identity of the ligand trans to the Si--H bond. A trans phosphine leads to a stronger Si--H bond, manifested by a larger J(Si--H) coupling constant. The Si--H activation diminishes slightly when a less basic phosphine is employed, consistent with decreased back-donation from the metal.
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Affiliation(s)
- Stanislav K Ignatov
- Department of Chemistry, University of Nizhny Novgorod, 23 Gagarin Avenue, Nizhny, Novgorod 603950, Russia
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Braunschweig H, Lutz M, Radacki K, Schaumlöffel A, Seeler F, Unkelbach C. Facile Syntheses of Trovacene, the Formation of [n]Boratrovacenophanes (n = 1, 2), and Their Reactivity toward [Pt(PEt3)4]. Organometallics 2006. [DOI: 10.1021/om060471f] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Holger Braunschweig
- Institut für Anorganische Chemie, Bayerische Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Matthias Lutz
- Institut für Anorganische Chemie, Bayerische Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Krzysztof Radacki
- Institut für Anorganische Chemie, Bayerische Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Anu Schaumlöffel
- Institut für Anorganische Chemie, Bayerische Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Fabian Seeler
- Institut für Anorganische Chemie, Bayerische Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Christian Unkelbach
- Institut für Anorganische Chemie, Bayerische Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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Bouwkamp MW, Budzelaar PHM, Gercama J, Del Hierro Morales I, de Wolf J, Meetsma A, Troyanov SI, Teuben JH, Hessen B. Naked (C5Me5)2M Cations (M = Sc, Ti, and V) and Their Fluoroarene Complexes. J Am Chem Soc 2005; 127:14310-9. [PMID: 16218625 DOI: 10.1021/ja054544i] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The ionic metallocene complexes [Cp*(2)M][BPh(4)] (Cp* = C(5)Me(5)) of the trivalent 3d metals Sc, Ti, and V were synthesized and structurally characterized. For M = Sc, the anion interacts weakly with the metal center through one of the phenyl groups, but for M = Ti and V, the cations are naked. They each contain one strongly distorted Cp* ligand, with one (V) or two (Ti) agostic C-H...M interactions involving the Cp*Me groups. For Sc and Ti, these Lewis acidic species react with fluorobenzene and 1,2-difluorobenzene to yield [Cp*(2)M(kappaF-FC(6)H(5))(n)][BPh(4)] (M = Sc, n = 2; M = Ti, n = 1) and [Cp*(2)M(kappa(2)F-1,2-F(2)C(6)H(4))][BPh(4)], the first examples of kappaF-fluorobenzene and kappa(2)F-1,2-difluorobenzene adducts of transition metals. With the perfluorinated anion [B(C(6)F(5))(4)](-), both Sc and Ti form [Cp*(2)M(kappa(2)F-C(6)F(5))B(C(6)F(5))(3)] contact ion pairs. The nature of the metal-fluoroarene interaction was studied by density functional theory (DFT) calculations and by comparison with the corresponding tetrahydrofuran (THF) adducts and was found to be predominantly electrostatic for all metals studied.
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Affiliation(s)
- Marco W Bouwkamp
- Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Liu G, Beetstra DJ, Meetsma A, Hessen B. Neutral and Cationic Vanadium(III) Alkyl and Allyl Complexes with a Cyclopentadienyl-amine Ancillary Ligand. Organometallics 2004. [DOI: 10.1021/om049660t] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guohua Liu
- Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Dirk J. Beetstra
- Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Auke Meetsma
- Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Bart Hessen
- Center for Catalytic Olefin Polymerization, Stratingh Institute for Chemistry and Chemical Engineering, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Köhler FH, Hebendanz N, Thewalt U, Kanellakopulos B, Klenze R. General Entry to Novel Manganese(II) Half-Sandwich Complexes. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/anie.198407211] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Baker R, Davies P, Edwards P, Farley R, Liyanage S, Murphy D, Yong B. Early Transition Metal Complexes of Triphosphorus Macrocycles. Eur J Inorg Chem 2002. [DOI: 10.1002/1099-0682(200208)2002:8<1975::aid-ejic1975>3.0.co;2-i] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Bradley S, Camm KD, Furtado SJ, Gott AL, McGowan PC, Podesta TJ, Thornton-Pett M. Synthesis and Structure of Amino-Functionalized Cyclopentadienyl Vanadium Complexes and Evaluation of Their Butadiene Polymerization Behavior. Organometallics 2002. [DOI: 10.1021/om020170f] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sam Bradley
- Department of Chemistry, University of Leeds, Leeds LS2 9JT, U.K
| | - Kenneth D. Camm
- Department of Chemistry, University of Leeds, Leeds LS2 9JT, U.K
| | | | - Andrew L. Gott
- Department of Chemistry, University of Leeds, Leeds LS2 9JT, U.K
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Alkylaminophosphanyl substituted half-sandwich complexes of vanadium(III) and chromium(III): preparation and reactivity in ethylene polymerisation. J Organomet Chem 2001. [DOI: 10.1016/s0022-328x(01)01191-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Snee PT, Yang H, Kotz KT, Payne CK, Harris CB. Ultrafast Infrared Studies of the Reaction Mechanism of Silicon−Hydrogen Bond Activation by η5-CpV(CO)4. J Phys Chem A 1999. [DOI: 10.1021/jp991964j] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Preston T. Snee
- Department of Chemistry, University of California, Berkeley, California, 94720 and Chemical Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California, 94720
| | - Haw Yang
- Department of Chemistry, University of California, Berkeley, California, 94720 and Chemical Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California, 94720
| | - Kenneth T. Kotz
- Department of Chemistry, University of California, Berkeley, California, 94720 and Chemical Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California, 94720
| | - Christine K. Payne
- Department of Chemistry, University of California, Berkeley, California, 94720 and Chemical Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California, 94720
| | - Charles B. Harris
- Department of Chemistry, University of California, Berkeley, California, 94720 and Chemical Sciences Division, Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California, 94720
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Witte PT, Meetsma A, Hessen B. Linked Cyclopentadienyl−Amide Complexes of Divalent, Trivalent, and Tetravalent Vanadium: A Vanadium “Constrained Geometry Catalyst”. Organometallics 1999. [DOI: 10.1021/om9903184] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peter T. Witte
- Center for Catalytic Olefin Polymerization, Department of Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Auke Meetsma
- Center for Catalytic Olefin Polymerization, Department of Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Bart Hessen
- Center for Catalytic Olefin Polymerization, Department of Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Weng WQ, Arif AM, Ernst RD. Synthesis, Characterization, and Structural Studies of Transition Metal Open Fulvalene Complexes. Organometallics 1998. [DOI: 10.1021/om980426a] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wei-qing Weng
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
| | - Atta M. Arif
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
| | - Richard D. Ernst
- Department of Chemistry, University of Utah, Salt Lake City, Utah 84112
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Mattamana SP, Poli R. Accessibility of 17-Electron Structures for Cyclopentadienylchromium(III) Compounds. 2.†Cyanide Derivatives with 15- and 17-Electron Configurations. Organometallics 1997. [DOI: 10.1021/om9610096] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ting C, Hammer MS, Baenziger NC, Messerle L, Deak J, Li S, McElfresh M. Dimeric and Cyclotrimeric Piano-Stool Vanadium(III) Dihalides with Unusual Differences in V−V Distance and Magnetochemistry. Syntheses, Structures, and Reactivities of (η-C5Me4R)2V2(μ-Br)4 and the Trivanadium Cluster (η-C5Me4R)3V3(μ-Cl)6, New Mid-Valent Organovanadium Synthons. Organometallics 1997. [DOI: 10.1021/om970045h] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Legzdins P, McNeil WS, Rettig SJ, Smith KM. Synthesis and Characterization of 17-Valence-Electron [CpCr(NO)X2]- Anions: Oxidatively Induced Loss of the Nitrosyl Ligand1. J Am Chem Soc 1997. [DOI: 10.1021/ja963464z] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Peter Legzdins
- Contribution from the Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - W. Stephen McNeil
- Contribution from the Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Steven J. Rettig
- Contribution from the Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
| | - Kevin M. Smith
- Contribution from the Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
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Fettinger JC, Keogh DW, Kraatz HB, Poli R. Synthesis and Properties of Cyclopentadienylniobium(III) Complexes. A Magneto−Structural Correlation for 16-Electron Four-Legged Piano Stool Complexes. Organometallics 1996. [DOI: 10.1021/om960384v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. C. Fettinger
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - D. Webster Keogh
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Heinz-Bernhard Kraatz
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
| | - Rinaldo Poli
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
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Gerlach CP, Arnold J. Synthesis and Reactivity of a Vanadium(III)−Methyl Complex Stabilized by Hexamethylsilazanate Ligands. Organometallics 1996. [DOI: 10.1021/om960706v] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - John Arnold
- Department of Chemistry, University of California, Berkeley, California 94720-1460
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Poli R. Open-Shell Organometallics as a Bridge between Werner-Type and Low-Valent Organometallic Complexes. The Effect of the Spin State on the Stability, Reactivity, and Structure. Chem Rev 1996; 96:2135-2204. [PMID: 11848825 DOI: 10.1021/cr9500343] [Citation(s) in RCA: 225] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rinaldo Poli
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742
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Fettinger JC, Mattamana SP, Poli R, Rogers RD. Accessibility of 17-Electron Structures for Cyclopentadienylchromium(III) Compounds. 1. Experimental Studies on the Dichloride and Dimethyl Compounds. Organometallics 1996. [DOI: 10.1021/om960330l] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James C. Fettinger
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry, Northern Illinois University, DeKalb, Illinois 60115
| | - Sundeep P. Mattamana
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry, Northern Illinois University, DeKalb, Illinois 60115
| | - Rinaldo Poli
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry, Northern Illinois University, DeKalb, Illinois 60115
| | - Robin D. Rogers
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, and Department of Chemistry, Northern Illinois University, DeKalb, Illinois 60115
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Buijink JKF, Kloetstra KR, Meetsma A, Teuben JH, Smeets WJJ, Spek AL. Structure and Reactivity of Mono(cyclopentadienyl)vanadium Alkynyl and Aryne Complexes. Organometallics 1996. [DOI: 10.1021/om950902m] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ricci G, Panagia A, Porri L. Polymerization of 1,3-dienes with catalysts based on mono- and bis-cyclopentadienyl derivatives of vanadium. POLYMER 1996. [DOI: 10.1016/0032-3861(96)81112-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Gailus H, Woitha G, Rehder D. Dinitrogenvanadates(–I): synthesis, reactions and conditions for their stability. ACTA ACUST UNITED AC 1994. [DOI: 10.1039/dt9940003471] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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η7-Cycloheptatrienyl-carbonylvanadium-komplexe mit mono- und bifunktionellen phosphan-liganden. Eine 51V-NMR-spektroskopische untersuchung. J Organomet Chem 1993. [DOI: 10.1016/0022-328x(93)80453-i] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Holt DG, Larkworthy LF, Povey DC, Smith GW, Leigh G. Synthesis and structural studies of complexes of vanadium(II) and vanadium(III) halides with tertiary phosphines. Inorganica Chim Acta 1993. [DOI: 10.1016/s0020-1693(00)91450-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wang Y, Liang Y, Liu J, Jin S, Lin Y. Preparation and structure of half-open vanadocene, V[2,4-(CH3)2C5H5](C5H5)CO. J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)83401-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Coville NJ, du Plooy KE, Pickl W. Monosubstituted cyclopentadienyl half-sandwich transition metal complexes. Coord Chem Rev 1992. [DOI: 10.1016/0010-8545(92)80070-8] [Citation(s) in RCA: 108] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Woitha C, Rehder D. Vanadium(-I)-Stickstoffkomplexe mit end-on koordiniertem N2: funktionelle Modelle für die „alternative Nitrogenase”. Angew Chem Int Ed Engl 1990. [DOI: 10.1002/ange.19901021238] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gibson VC, Kee TP, Clegg W. Synthesis and characterisation of half-sandwich tantalum compounds in oxidation states (I)–(V): tertiary phosphine, acetylene, butadiene, carbonyl, and oxo derivatives. X-Ray crystal structures of [Ta(C5Me5)Cl3(PMe3)] and [Ta(C5Me5)Cl2(CO)2(PMe3)]. ACTA ACUST UNITED AC 1990. [DOI: 10.1039/dt9900003199] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Facile synthesis and reactivity of CO-free monocyclopentadienylvanadium(I) alkyne complexes. J Organomet Chem 1989. [DOI: 10.1016/0022-328x(89)87063-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Gibson VC, Kee TP, Clegg W. A mild, phosphine-assisted synthesis of (η-C5Me5)Ta(CO)4. Isolation and crystal structure of intermediate (η-C5Me5)TaCl2(CO)2(PMe3). J Organomet Chem 1988. [DOI: 10.1016/0022-328x(88)83073-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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The formation and properties of mono-cyclopentadienyltitanium dichloride complexes containing trimethylphosphine and isonitrile ligands: molecular structure of (η5-C5H5)TiCl2(PMe3)2. J Organomet Chem 1987. [DOI: 10.1016/s0022-328x(00)99820-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Holloway CE, Melník M. Vanadium organometallic compounds: analysis and classification of crystallographic data. J Organomet Chem 1986. [DOI: 10.1016/s0022-328x(00)99675-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Synthesis and characterization of halogen and pseudohalogen derivatives of substituted vanadocenes. J Organomet Chem 1985. [DOI: 10.1016/0022-328x(85)80183-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Hoch M, Rehder D. Syntheses with η5-C5H5V(CO)3THF: Generation, and substitution reactions. First observation of 51V-117,119Sn coupling. J Organomet Chem 1985. [DOI: 10.1016/0022-328x(85)87284-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Köhler FH, Hebendanz N, Thewalt U, Kanellakopulos B, Klenze R. Genereller Zugang zu neuen Mangan(II)-Halbsandwich-Komplexen. Angew Chem Int Ed Engl 1984. [DOI: 10.1002/ange.19840960914] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Synthesis and characterization of bis-benzyl and bis-allyl complexes of titanium(III) and vanadium(III); Catalytic isomerization of alkenes with CpV(η3-C3H5)2. J Organomet Chem 1984. [DOI: 10.1016/s0022-328x(00)99139-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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