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Alvarez MA, García ME, García-Vivó D, Ruiz MA, Vega P. Cycloaddition and C-S Bond Cleavage Processes in Reactions of Heterometallic Phosphinidene-Bridged MoRe and MoMn Complexes with Alkynes and Phenyl Isothiocyanate. Organometallics 2023; 42:2052-2064. [PMID: 37592950 PMCID: PMC10431387 DOI: 10.1021/acs.organomet.3c00242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Indexed: 08/19/2023]
Abstract
Reactions of [MoReCp(μ-PMes*)(CO)6] with internal alkynes RC≡CR yielded the phosphapropenylidene-bridged complexes [MoReCp(μ-κ2P,C:η3-PMes*CRCR)(CO)5] (Mes* = 2,4,6-C6H2tBu3; R = CO2Me, Ph). Terminal alkynes HC≡CR1 gave mixtures of isomers [MoReCp(μ-κ2P,C:η3-PMes*CHCR1)(CO)5] and [MoReCp(μ-κ2P,C:η3-PMes*CR1CH)(CO)5], with the first isomer being major (R1 = CO2Me) or unique (R1 = tBu), indicating the relevance of steric repulsions during the [2 + 2] cycloaddition step between Mo=P and C≡C bonds in these reactions. Similar reactions were observed for [MoMnCp(μ-PMes*)(CO)6]. Addition of ligands to these complexes promoted rearrangement of the phosphapropenylidene ligand into the allyl-like μ-η3:κ1C mode, as shown by the reaction of [MoReCp(μ-κ2P,C:η3-PMes*CHC(CO2Me)}(CO)5] with CN(p-C6H4OMe) to give [MoReCp{μ-η3:κ1C-PMes*CHC(CO2Me)}(CO)5{CN(p-CH4OMe)}2]. The MoRe phosphinidene complex reacted with S=C=NPh to give as major products the phosphametallacyclic complex [MoReCp{μ-κ2P,S:κ2P,S-PMes*C(NPh)S}(CO)5] and its thiophosphinidene-bridged isomer [MoReCp(μ-η2:κ1S-SPMes*)(CO)5(CNPh)]. The first product follows from a [2 + 2] cycloaddition between Mo=P and C=S bonds, with specific formation of P-C bonds, whereas the second one would arise from the alternative cycloaddition involving the formation of P-S bonds, more favored on steric grounds. The prevalence of the μ-η2:κ1S coordination mode of the SPMes* ligand over the μ-η2:κ1p mode was investigated theoretically to conclude that steric congestion favors the first mode, while the kinetic barrier for interconversion between isomers is low in any case.
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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
| | - Patricia Vega
- Departamento de Química
Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain
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Rummel L, Lassandro G, Seidl M, Timoshkin AY, Scheer M. Reactivity of the pentelidene complexes [Cp*E{W(CO) 5} 2] (E = P, As) towards dichalcogenides and chalcogenols - synthesis of novel chalcogenopentelidene complexes. Dalton Trans 2021; 50:12648-12654. [PMID: 34545886 DOI: 10.1039/d1dt01866c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pentelidene complexes of the type [Cp*E{W(CO)5}2] (Cp* = C5Me5; 1a: E = P, 1b: E = As) were reacted with the dichalcogenides R2Ch2 (R = Ph, Mes, Tipp; Ch = S, Se, Te; Mes = 2,4,6-trimethylphenyl; Tipp = 2,4,6-triisopropylphenyl) and the chalcogenols PhChH (Ch = S, Se). It has been shown that the formation of new E-Ch bonds proceeds under elimination of the Cp* substituent. The resulting chalcogenopentelidene complexes, which have been isolated and fully characterised, represent a novel class of phosphinidene complexes which can be synthesised through this general synthetic route.
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Affiliation(s)
- Lena Rummel
- Institute of Inorganic Chemistry, University of Regensburg, Universitaetsstrasse 31, D-93053 Regensburg, Germany.
| | - Giuliano Lassandro
- Institute of Inorganic Chemistry, University of Regensburg, Universitaetsstrasse 31, D-93053 Regensburg, Germany.
| | - Michael Seidl
- Institute of Inorganic Chemistry, University of Regensburg, Universitaetsstrasse 31, D-93053 Regensburg, Germany.
| | - Alexey Y Timoshkin
- Institute of Chemistry, St Petersburg State University, Universitetskaya emb. 7/9, 199034 St Petersburg, Russia
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, Universitaetsstrasse 31, D-93053 Regensburg, Germany.
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Conejo MDM, Pastor A, Montilla F, Galindo A. P atom as ligand in transition metal chemistry: Structural aspects. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Nees S, Kupfer T, Hofmann A, Braunschweig H. Planar Cyclopenten-4-yl Cations: Highly Delocalized π Aromatics Stabilized by Hyperconjugation. Angew Chem Int Ed Engl 2020; 59:18809-18815. [PMID: 32701182 PMCID: PMC7589364 DOI: 10.1002/anie.202009644] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Indexed: 11/25/2022]
Abstract
Theoretical studies predicted the planar cyclopenten-4-yl cation to be a classical carbocation, and the highest-energy isomer of C5 H7 + . Hence, its existence has not been verified experimentally so far. We were now able to isolate two stable derivatives of the cyclopenten-4-yl cation by reaction of bulky alanes CpR AlBr2 with AlBr3 . Elucidation of their (electronic) structures by X-ray diffraction and quantum chemistry studies revealed planar geometries and strong hyperconjugation interactions primarily from the C-Al σ bonds to the empty p orbital of the cationic sp2 carbon center. A close inspection of the molecular orbitals (MOs) and of the anisotropy of current (induced) density (ACID), as well as the evaluation of various aromaticity descriptors indicated distinct aromaticity for these cyclopenten-4-yl derivatives, which strongly contrasts the classical description of this system. Here, strong delocalization of π electrons spanning the whole carbocycle has been verified, thus providing rare examples of π aromaticity involving saturated sp3 carbon atoms.
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Affiliation(s)
- Samuel Nees
- Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Thomas Kupfer
- Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexander Hofmann
- Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Holger Braunschweig
- Institut für Anorganische ChemieJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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Nees S, Kupfer T, Hofmann A, Braunschweig H. Stabilisierung planarer Cyclopenten‐4‐yl‐Kationen durch Hyperkonjugation und π‐Delokalisierung. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Samuel Nees
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
- Institut für Nachhaltige Chemie & Katalyse mit Bor Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
| | - Thomas Kupfer
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
- Institut für Nachhaltige Chemie & Katalyse mit Bor Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
| | - Alexander Hofmann
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
- Institut für Nachhaltige Chemie & Katalyse mit Bor Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
| | - Holger Braunschweig
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
- Institut für Nachhaltige Chemie & Katalyse mit Bor Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Deutschland
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Piesch M, Seidl M, Stubenhofer M, Scheer M. Ring Expansions of Nonpolar Polyphosphorus Rings. Chemistry 2019; 25:6311-6316. [PMID: 30882943 DOI: 10.1002/chem.201901149] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Indexed: 11/08/2022]
Abstract
The reaction of the phosphinidene complex [Cp*P{W(CO)5 }2 ] (1 a) (Cp*=C5 Me5 ) with the anionic cyclo-Pn ligand complex [(η3 -P3 )Nb(ODipp)3 ]- (2, Dipp=2,6-diisopropylphenyl) resulted in the formation of [{W(CO)5 }2 {μ3 ,η3:1:1 -P4 Cp*}Nb(ODipp)3 ]- (3), which represents an unprecedented example of a ring expansion of a polyphosphorus-ligand complex initiated by a phosphinidene complex. Furthermore, the reaction of the pnictinidene complexes [Cp*E{W(CO)5 }2 ] (E=P: 1 a, As: 1 b) with the neutral complex [Cp'''Co(η4 -P4 )] (Cp'''=1,2,4-tBu3 C5 H2 ) led to a cyclo-P4 E ring (E=P, As) through the insertion of the pentel atom into the cyclo-P4 ligand. Starting from 1 a, the two isomers [Cp'''Co(μ3 ,η4:1:1 -P5 Cp*){W(CO)5 }2 ] (5 a,b), and from 1 b, the three isomers [Cp'''Co(μ3 ,η4:1:1 -AsP4 Cp*){W(CO)5 }2 ] (6 a-c) with unprecedented cyclo-P4 E ligands (E=P, As) were isolated. The complexes 6 a-c represent unique examples of ring expansions which lead to new mixed five-membered cyclo-P4 As ligands. The possible reaction pathways for the formation of 5 a,b and 6 a-c were investigated by a combination of temperature-dependent 31 P{1 H} NMR studies and DFT calculations.
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Affiliation(s)
- Martin Piesch
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Michael Seidl
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Markus Stubenhofer
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
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Albuerne IG, Alvarez MA, Amor I, García ME, García-Vivó D, Ruiz MA. Cycloaddition Reactions of the Phosphinidene-Bridged Complex [Mo2Cp(μ-κ1:κ1,η5-PC5H4)(CO)2(η6-HMes*)] with Diazoalkanes and Other Heterocumulenes. Inorg Chem 2016; 55:10680-10691. [DOI: 10.1021/acs.inorgchem.6b01930] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Isabel G. Albuerne
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - M. Angeles Alvarez
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071 Oviedo, Spain
| | - Inmaculada Amor
- 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
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Seidl M, Weinzierl R, Timoshkin AY, Scheer M. Insight into the Reaction of a Dinuclear Phosphinidene Complex with Nitriles. Chemistry 2016; 22:5484-8. [PMID: 26887793 DOI: 10.1002/chem.201504954] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Indexed: 11/07/2022]
Abstract
The phosphinidene complex [Cp*P{W(CO)5}2] (1; Cp*=C5 Me5 ) reacted with malononitrile to give the 1,2-dihydro-1,3,2-diazaphosphinine derivative 2. The reaction of 1 with 1,4-benzodinitrile gave [1,4-{{W(CO)5}2 P-N=C(Cp*)}2 (C6 H4)] (3), the first example of a cumulene-like aminophosphinidene complex. The reaction of 1 with aniline gave the aminophosphinidene complex [(Ph)N(H)P{W(CO)5}2] (4). To compare the reactivity of benzonitrile and aniline with 1, the phosphinidene complex 1 was reacted with three different isomers of aminobenzonitrile (2-, 3-, and 4-aminobenzonitrile). These reactions gave an insight into the reaction pathway of 1 with benzonitrile derivatives. Compounds 5, 6 a, 6 b, and 7, which are derivatives of 1,2-dihydro-1,3,2-diazaphosphinine or benzo-2H-1,2-azaphospholes, were, as well as all other products, characterized by mass spectrometry, NMR and IR spectroscopy, and X-ray structure analysis.
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Affiliation(s)
- Michael Seidl
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Rudolf Weinzierl
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany
| | - Alexey Y Timoshkin
- Institute of Chemistry, St. Petersburg State University, 7/9 Universitetskaya nab., 199034, St. Petersburg, Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie der Universität Regensburg, 93040, Regensburg, Germany.
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11
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Seidl M, Schiffer M, Bodensteiner M, Timoshkin AY, Scheer M. Reactivity of bridged pentelidene complexes with isonitriles: a new way to pentel-containing heterocycles. Chemistry 2013; 19:13783-91. [PMID: 24038598 DOI: 10.1002/chem.201301928] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Indexed: 11/07/2022]
Abstract
The reaction of [Cp*E{W(CO)5 }2 ] (E=P (1 a), As (1 b); Cp*=1,2,3,4,5-pentamethylcyclopentadienyl) with isonitriles RNC (R=tBu, cyclohexyl (Cy), nBu) depends on the steric demand of the substituent at the isonitrile as well as on the stoichiometry of the starting materials. With tBuNC only the Lewis acid/base adducts [Cp*E{W(CO)5 }2 (CNtBu)] (E=P (2 a), As (2 b)) are formed. The use of Cy and n-butylisonitrile leads first to the formation of the Lewis acid/base adduct, but only at low temperatures. At ambient temperatures, a rearrangement occurs and bicyclo[3.2.0]heptane derivatives of the type [{C(Me)C(CH2 )C(Me)C(Me)C(Me)}C(NR)- E{W(CO)5 }2 ] (E=P, As; R=Cy, nBu) (3 a-Cy, 3 b-Cy, 3 a-nBu and 3 b-nBu) are obtained. The use of a further equivalent of isonitrile results in products revealing two new structural motifs, the four-membered ring derivatives [C(Cp*)N(R)C(NR)E{W(CO)5 }2 ] (4: E=P, As; R=Cy, nBu) and the bicyclic complexes [[{C(Me)C- (CH2 )C(Me)C(Me)C(Me)}C(NR)2 - E{W(CO)5 }2 ] (5: E=As; R=Cy). The reaction pathway depends on the substituent at the isonitrile. By treatment of 1 a with two equivalents of CyNC only a 2H-1,3-azaphosphet complex 4 a-Cy (E=P; R=Cy) is formed. Treatment of 1 b with two equivalents of CyNC exclusively leads to the complex 5 b-Cy (E=As; R=Cy). Treatment of 1 a with two equivalents of nBuNC results in a mixture of complexes, the 2H-1,3-azaphosphet 4 a-nBu (E=P; R=nBu) and the bicyclic complex 5 a-nBu (E=P; R=nBu). For the arsenidene complex 1 b a mixture of the 2H-1,3-azarsete complex 4 b-nBu (E=As; R=nBu) and the bicyclic complex 5 b-nBu (E=P, As; R=Cy, nBu) is obtained. Complex 4 b-nBu is the first example of a 2H-1,3-azarsete complex. All products have been characterized by using mass spectrometry, NMR spectroscopy, and X-ray diffraction analysis.
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Affiliation(s)
- Michael Seidl
- Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg (Germany), Fax: (+49) 941-943-4439
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Stubenhofer M, Kuntz C, Bodensteiner M, Timoshkin AY, Scheer M. Versatile Reactivity of Bridged Pentelidene Complexes toward Secondary and Tertiary Phosphines. Organometallics 2013. [DOI: 10.1021/om400357y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Markus Stubenhofer
- Department of Inorganic Chemistry, University of Regensburg, 93053 Regensburg,
Germany
| | - Christian Kuntz
- Department of Inorganic Chemistry, University of Regensburg, 93053 Regensburg,
Germany
| | - Michael Bodensteiner
- Department of Inorganic Chemistry, University of Regensburg, 93053 Regensburg,
Germany
| | - Alexey Y. Timoshkin
- Department of Chemistry, St. Petersburg State University, University pr. 26,
Old Peterhoff, 198504 St. Petersburg, Russia
| | - Manfred Scheer
- Department of Inorganic Chemistry, University of Regensburg, 93053 Regensburg,
Germany
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Pushkarevsky NA, Konchenko SN, Virovets AV, Scheer M. Transformation of a Phosphorus-Bound Cp* Moiety in the Coordination Sphere of Manganese Carbonyl Complexes. Organometallics 2013. [DOI: 10.1021/om300808t] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Nikolay A. Pushkarevsky
- Nikolaev Institute
of Inorganic
Chemistry, Siberian Division of RAS, Akad.
Lavrentieva Street 3, 630090
Novosibirsk, Russia
| | - Sergey N. Konchenko
- Nikolaev Institute
of Inorganic
Chemistry, Siberian Division of RAS, Akad.
Lavrentieva Street 3, 630090
Novosibirsk, Russia
| | - Alexander V. Virovets
- Nikolaev Institute
of Inorganic
Chemistry, Siberian Division of RAS, Akad.
Lavrentieva Street 3, 630090
Novosibirsk, Russia
| | - Manfred Scheer
- Institut
für Anorganische
Chemie, Universität Regensburg,
93040, Regensburg, Germany
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Stubenhofer M, Lassandro G, Balázs G, Timoshkin AY, Scheer M. Stepwise activation of “non-innocent” Cp* substituents – a Cp* based cascade reaction. Chem Commun (Camb) 2012; 48:7262-4. [DOI: 10.1039/c2cc32690f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Alvarez B, Angeles Alvarez M, Amor I, García ME, Ruiz MA. A Thiophosphinidene Complex as a Vehicle in Phosphinidene Transmetalation: Easy Formation and Cleavage of a P–S Bond. Inorg Chem 2011; 50:10561-3. [DOI: 10.1021/ic202058h] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Belén Alvarez
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E 33071 Oviedo, Spain
| | - M. Angeles Alvarez
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E 33071 Oviedo, Spain
| | - Inmaculada Amor
- 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
| | - Miguel A. Ruiz
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E 33071 Oviedo, Spain
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Scheer M, Schiffer M, Leiner E, Johnson BP, Haindl C, Umbarkar S. Complexes with a Metal-Phosphorus Triple Bond as Versatile Building Blocks in Coordination and Organometallic Chemistry. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500212300] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Manfred Scheer
- a Institute of Inorganic Chemistry , University of Karlsruhe , Karlsruhe , Germany
| | - Michael Schiffer
- a Institute of Inorganic Chemistry , University of Karlsruhe , Karlsruhe , Germany
| | - Eva Leiner
- a Institute of Inorganic Chemistry , University of Karlsruhe , Karlsruhe , Germany
| | - Brian P. Johnson
- a Institute of Inorganic Chemistry , University of Karlsruhe , Karlsruhe , Germany
| | - Corinna Haindl
- a Institute of Inorganic Chemistry , University of Karlsruhe , Karlsruhe , Germany
| | - Shubhangi Umbarkar
- a Institute of Inorganic Chemistry , University of Karlsruhe , Karlsruhe , Germany
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Stubenhofer M, Kuntz C, Bodensteiner M, Zenneck U, Sierka M, Scheer M. The Complexed 1,3-Diphospha-2-Arsaallyl Radical and Its Cationic and Anionic Derivatives. Chemistry 2010; 16:7488-95. [DOI: 10.1002/chem.201000418] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Scheer M, Kuntz C, Stubenhofer M, Zabel M, Timoshkin A. Stepwise Expansion of a Cp* Ring at Pentelidene Complexes and Stereoselective Formation of Triphosphines. Angew Chem Int Ed Engl 2009; 49:188-92. [DOI: 10.1002/anie.200904827] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Scheer M, Kuntz C, Stubenhofer M, Zabel M, Timoshkin AY. Schrittweise Erweiterung eines Cp*-Rings am Pentelidenkomplex und stereoselektive Bildung von Triphosphanen. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904827] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Scheer M, Kuntz C, Stubenhofer M, Linseis M, Winter R, Sierka M. Eine Familie mit komplexiertem Triphosphaallyl-Radikal, -Kation und -Anion. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200805892] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Scheer M, Kuntz C, Stubenhofer M, Linseis M, Winter R, Sierka M. The Complexed Triphosphaallyl Radical, Cation, and Anion Family. Angew Chem Int Ed Engl 2009; 48:2600-4. [DOI: 10.1002/anie.200805892] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Stubenhofer M, Kuntz C, Balázs G, Zabel M, Scheer M. 1,2,3-Triphosphole derivatives as reactive intermediates. Chem Commun (Camb) 2009:1745-7. [DOI: 10.1039/b822732b] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Scheer M, Himmel D, Kuntz C, Zhan S, Leiner E. Reactivity of Transition Metal-Phosphorus Triple Bonds towards Triply Bonded [{CpMo(CO)2}2]: Formation of Heteronuclear Cluster Compounds. Chemistry 2008; 14:9020-9029. [DOI: 10.1002/chem.200800804] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Scheer M. The coordination chemistry of group 15 element ligand complexes—a developing area. Dalton Trans 2008:4372-86. [DOI: 10.1039/b718179p] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Balázs G, Gregoriades LJ, Scheer M. Triple Bonds between Transition Metals and the Heavier Elements of Groups 14 and 15. Organometallics 2007. [DOI: 10.1021/om070108o] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gábor Balázs
- Institut für Anorganische Chemie, Universität Regensburg, Regensburg D-93053, Germany
| | | | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, Regensburg D-93053, Germany
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Scheer M, Himmel D, Johnson B, Kuntz C, Schiffer M. Ringerweiterung einer Cp*-Einheit – Bildung eines 1,2-Diphosphacyclooctatetraen-Liganden. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200605173] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Scheer M, Himmel D, Johnson BP, Kuntz C, Schiffer M. Ring Expansion of a Cp* Moiety: Formation of a 1,2-Diphosphacyclooctatetraene Ligand. Angew Chem Int Ed Engl 2007; 46:3971-5. [PMID: 17427166 DOI: 10.1002/anie.200605173] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Manfred Scheer
- Institut für Anorganische Chemie der Universität Regensburg, 93040 Regensburg, Germany.
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Johnson BP, Balázs G, Scheer M. Low-coordinate E1 ligand complexes of Group 15 elements—A developing area. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2005.11.023] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Peruzzini M, Abdreimova RR, Budnikova Y, Romerosa A, Scherer OJ, Sitzmann H. Functionalization of white phosphorus in the coordination sphere of transition metal complexes. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.05.041] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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García ME, Riera V, Ruiz MA, Sáez D, Hamidov H, Jeffery JC, Riis-Johannessen T. Ten-electron coordination and reactivity of an arylphosphinidene ligand. J Am Chem Soc 2004; 125:13044-5. [PMID: 14570475 DOI: 10.1021/ja037293r] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photochemical decarbonylation of [Mo2Cp2(mu-PR*)(CO)4] (Cp = eta5-C5H5; R* = 2,4,6-C6H2tBu3) gives [Mo2Cp2(mu-kappa1:kappa1,eta6-PR*)(CO)2], which shows the first example of a remarkable 10-electron donor arylphosphinidene ligand which bridges two Mo atoms through its phosphorus atom while being pi-bonded to one Mo center through the six carbon atoms of the aryl ring. This causes a severe pyramidal distortion of the P-bound C atom. The complex adds CO to give [Mo2Cp2(mu-kappa1:kappa1,eta4-PR*)(CO)3], which has an 8-electron donor PR* ligand, and then the parent complex [Mo2Cp2(mu-PR*)(CO)4]. Protonation of [Mo2Cp2(mu-kappa1:kappa1,eta6-PR*)(CO)2] gives the hydride [Mo2Cp2(H)(mu-kappa1:kappa1,eta6-PR*)(CO)2]+, which undergoes P-C bond cleavage and hydride migration, affording the phosphido cation [Mo2Cp2(mu-P)(eta6-R*H)(CO)2]+.
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Affiliation(s)
- M Esther García
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, 33071 Oviedo, Spain
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Leiner E, Scheer M. Cp*GaCl2 and Cp*2GaCl (Cp*=η1-C5Me5) as starting materials for novel Group 13 element complexes. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(01)01315-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Schiffer M, Scheer M. Insertion von Nitrilen in die P-C-Bindung von [(η1-C5Me5)P{W(CO)5}2] - ein neuer Zugang zu Phosphorheterocyclen. Angew Chem Int Ed Engl 2001. [DOI: 10.1002/1521-3757(20010917)113:18<3520::aid-ange3520>3.0.co;2-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Schiffer M, Scheer M. Insertion Reactions of Nitriles into the P-C Bond of [(eta(1)-C(5)Me(5))P{W(CO)(5)}(2)]-A Novel Approach to Phosphorus-Containing Heterocycles This work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie. M. Schiffer thanks the Fonds der Chemischen Industrie for a PhD fellowship. Angew Chem Int Ed Engl 2001; 40:3413-3416. [PMID: 11592156 DOI: 10.1002/1521-3773(20010917)40:18<3413::aid-anie3413>3.0.co;2-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Michael Schiffer
- Institut für Anorganische Chemie der Universität Karlsruhe 76128 Karlsruhe (Germany)
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