1
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Sharma MK, Weinert HM, Wölper C, Schulz S. Gallaphosphene L(Cl)GaPGaL: A novel phosphinidene transfer reagent. Chemistry 2024:e202400110. [PMID: 38235843 DOI: 10.1002/chem.202400110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 01/17/2024] [Accepted: 01/18/2024] [Indexed: 01/19/2024]
Abstract
Gallaphosphene L(Cl)GaPGaL 1 (L=HC[C(Me)N(Ar)]2 ; Ar=2,6-iPr2 C6 H3 ) reacts with N-heterocyclic carbenes R NHC (R NHC=[CMeN(R)]2 C; R=Me, iPr) to R NHC-coordinated phosphinidenes R NHC→PGa(Cl)L (R=Me 2 a, iPr 2 b) and with isonitriles RNC (R=iPr, Cy) to 1,3-phosphaazaallenes L(Cl)GaP=C=N-R (R=iPr 3 a, Cy 3 b), respectively. Quantum chemical calculations reveal that 2 a/2 b possess two localized lone pair of electrons, whereas 3 a/3 b only show one localized lone pair as was reported for gallaphosphene 1. 2 b reacts with 2.5 equivalents of a borane (THF ⋅ BH3 ) to the NHC-stabilized phosphinidene-borane complex [iPr NHC→P(BH2 )]2 (BH3 )3 4 with concomitant formation of LGa(H)Cl 5. 2-5 are characterized by heteronuclear (1 H, 13 C{1 H}, 31 P{1 H}) NMR and IR spectroscopy, elemental analysis, and single crystal X-ray diffraction (sc-XRD).
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Affiliation(s)
- Mahendra K Sharma
- Institute of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstraße 5-7, D-45141, Essen
| | - Hanns M Weinert
- Institute of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstraße 5-7, D-45141, Essen
| | - Christoph Wölper
- Institute of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstraße 5-7, D-45141, Essen
| | - Stephan Schulz
- Institute of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstraße 5-7, D-45141, Essen
- Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Carl-Benz-Straße 199, D-47057, Duisburg
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2
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Nees S, Wellnitz T, Dankert F, Härterich M, Dotzauer S, Feldt M, Braunschweig H, Hering-Junghans C. On the Reactivity of Phosphaalumenes towards C-C Multiple Bonds. Angew Chem Int Ed Engl 2023; 62:e202215838. [PMID: 36516342 DOI: 10.1002/anie.202215838] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/11/2022] [Accepted: 12/14/2022] [Indexed: 12/15/2022]
Abstract
Heterocycles containing group 13 and 15 elements such as borazines are an integral part of organic, biomedical and materials chemistry. Surprisingly, heterocycles containing P and Al are rare. We have now utilized phosphaalumenes in reactions with alkynes, alkenes and conjugated double bond systems. With sterically demanding alkynes 1,2-phosphaalumetes were afforded, whereas the reaction with HCCH or HCCSiMe3 gave 1,4-phosphaaluminabarrelenes. Using styrene saturated 1,2-phosphaalumates were formed, which reacted further with additional styrene to give different regio-isomers of 1,4-aluminaphosphorinanes. Using ethylene, a 1,4-aluminaphosphorinane is obtained, while with 1,3-butadiene a bicyclic system containing an aluminacyclopentane and a phosphirane unit was synthesized. The experimental work is supported by theoretical studies to shed light on the mechanism governing the formation of these heterocycles.
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Affiliation(s)
- Samuel Nees
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Tim Wellnitz
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Leibniz-Institut für Katalyse e.V. (LIKAT), Albert-Einstein-Straße 3a, 18059, Rostock, Germany
| | - Fabian Dankert
- Leibniz-Institut für Katalyse e.V. (LIKAT), Albert-Einstein-Straße 3a, 18059, Rostock, Germany
| | - Marcel Härterich
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Simon Dotzauer
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Milica Feldt
- Leibniz-Institut für Katalyse e.V. (LIKAT), Albert-Einstein-Straße 3a, 18059, Rostock, Germany
| | - Holger Braunschweig
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
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3
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Koner A, Morgenstern B, Andrada DM. Metathesis Reactions of a NHC-Stabilized Phosphaborene. Angew Chem Int Ed Engl 2022; 61:e202203345. [PMID: 35583052 PMCID: PMC9401048 DOI: 10.1002/anie.202203345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Indexed: 11/25/2022]
Abstract
The BP unsaturated unit is a very attractive functional group as it provides novel reactivity and unique physical properties. Nonetheless, applications remain limited so far due to the bulky nature of B/P-protecting groups, required to prevent oligomerization. Herein, we report the synthesis and isolation of a N-heterocyclic carbene (NHC)-stabilized phosphaborene, bearing a trimethylsilyl (TMS) functionality at the P-terminal, as a room-temperature-stable crystalline solid accessible via facile NHC-induced trimethylsilyl chloride (TMSCl) elimination from its phosphinoborane precursor. This phosphaborene compound, bearing a genuine B=P bond, exhibits a remarkable ability for undergoing P-centre metathesis reactions, which allows the isolation of a series of unprecedented phosphaborenes. X-ray crystallographic analysis, UV/Vis spectroscopy, and DFT calculations provide insights into the B=P bonding situation.
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Affiliation(s)
- Abhishek Koner
- Faculty of Natural Sciences and TechnologyDepartment of ChemistrySaarland UniversityCampus C4.166123SaarbrückenGermany
| | - Bernd Morgenstern
- Faculty of Natural Sciences and TechnologyDepartment of ChemistrySaarland UniversityCampus C4.166123SaarbrückenGermany
| | - Diego M. Andrada
- Faculty of Natural Sciences and TechnologyDepartment of ChemistrySaarland UniversityCampus C4.166123SaarbrückenGermany
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4
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Koner A, Morgenstern B, Andrada DM. Metathese Reaktionen eines NHC‐stabilisierten Phosphaborens. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Abhishek Koner
- Faculty of Natural Sciences and Technology Department of Chemistry Saarland University Campus C4.1 66123 Saarbrücken Deutschland
| | - Bernd Morgenstern
- Faculty of Natural Sciences and Technology Department of Chemistry Saarland University Campus C4.1 66123 Saarbrücken Deutschland
| | - Diego M. Andrada
- Faculty of Natural Sciences and Technology Department of Chemistry Saarland University Campus C4.1 66123 Saarbrücken Deutschland
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5
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Sharma MK, Wölper C, Haberhauer G, Schulz S. Reversible and Irreversible [2+2] Cycloaddition Reactions of Heteroallenes to a Gallaphosphene. Angew Chem Int Ed Engl 2021; 60:21784-21788. [PMID: 34324782 PMCID: PMC8519123 DOI: 10.1002/anie.202108370] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/28/2021] [Indexed: 12/11/2022]
Abstract
[2+2] Cycloaddition reactions of gallaphosphene L(Cl)GaPGaL 1 (L=HC[C(Me)N(2,6-i-Pr2 C6 H3 )]2 ) with carbodiimides [C(NR)2 ; R=i-Pr, Cy] and isocyanates [RNCO; R=Et, i-Pr, Cy] yielded four-membered metallaheterocycles LGa(Cl)P[μ-C(X)NR]GaL (X=NR, R=i-Pr 2, Cy 3; X=O, R=Et 4, i-Pr 5, Cy 6). Compounds 4-6 reversibly react with CO2 via [2+2] cycloaddition at ambient temperature to the six-membered metallaheterocycles LGa(Cl)P[μ-C(O)O]-μ-C(O)N(R)GaL (R=Et 7, i-Pr 8, Cy 9). Compounds 2-9 were characterized by IR and heteronuclear (1 H, 13 C{1 H}, 31 P{1 H}) NMR spectroscopy and elemental analysis, while quantum chemical calculations provided a deeper understanding on the energetics of the reactions.
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Affiliation(s)
- Mahendra K. Sharma
- Institute of Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Christoph Wölper
- Institute of Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Gebhard Haberhauer
- Institute of Organic ChemistryUniversity of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Stephan Schulz
- Institute of Inorganic Chemistry, and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
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6
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Feld J, Wilson DWN, Goicoechea JM. Contrasting E-H Bond Activation Pathways of a Phosphanyl-Phosphagallene. Angew Chem Int Ed Engl 2021; 60:22057-22061. [PMID: 34383991 PMCID: PMC8518045 DOI: 10.1002/anie.202109334] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Indexed: 11/16/2022]
Abstract
The reactivity of the phosphanyl-phosphagallene, [H2 C{N(Dipp)}]2 PP=Ga(Nacnac) (Nacnac=HC[C(Me)N(Dipp)]2 ; Dipp=2,6-i Pr2 C6 H3 ) towards a series of reagents possessing E-H bonds (primary amines, ammonia, water, phenylacetylene, phenylphosphine, and phenylsilane) is reported. Two contrasting reaction pathways are observed, determined by the polarity of the E-H bonds of the substrates. In the case of protic reagents (δ- E-Hδ+ ), a frustrated Lewis pair type of mechanism is operational at room temperature, in which the gallium metal centre acts as a Lewis acid and the pendant phosphanyl moiety deprotonates the substrates. Interestingly, at elevated temperatures both NH2 i Pr and ammonia can react via a second, higher energy, pathway resulting in the hydroamination of the Ga=P bond. By contrast, with hydridic reagents (δ+ E-Hδ- ), such as phenylsilane, hydroelementation of the Ga=P bond is exclusively observed, in line with the polarisation of the Si-H and Ga=P bonds.
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Affiliation(s)
- Joey Feld
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory12 Mansfield Rd.OxfordOX1 3TAUK
| | - Daniel W. N. Wilson
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory12 Mansfield Rd.OxfordOX1 3TAUK
| | - Jose M. Goicoechea
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory12 Mansfield Rd.OxfordOX1 3TAUK
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7
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Feld J, Wilson DWN, Goicoechea JM. Contrasting E−H Bond Activation Pathways of a Phosphanyl‐Phosphagallene. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109334] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Joey Feld
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Rd. Oxford OX1 3TA UK
| | - Daniel W. N. Wilson
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Rd. Oxford OX1 3TA UK
| | - Jose M. Goicoechea
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Rd. Oxford OX1 3TA UK
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8
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Sharma MK, Wölper C, Haberhauer G, Schulz S. Reversible und irreversible [2+2]‐Cycloadditionen von Heteroallenen an ein Gallaphosphen. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mahendra K. Sharma
- Institut für Anorganische Chemie und Center for Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Christoph Wölper
- Institut für Anorganische Chemie und Center for Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Gebhard Haberhauer
- Institut für Organische Chemie Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Stephan Schulz
- Institut für Anorganische Chemie und Center for Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
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9
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Brückner T, Fantuzzi F, Stennett TE, Krummenacher I, Dewhurst RD, Engels B, Braunschweig H. Isolierung neutraler, mono‐ und dikationischer B
2
P
2
‐Ringe durch Addition eines Diphosphans an eine Bor‐Bor‐Dreifachbindung. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tobias Brückner
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
- Institute for Sustainable Chemistry & Catalysis with Boron Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
| | - Felipe Fantuzzi
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
- Institute for Sustainable Chemistry & Catalysis with Boron Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
- Institut für Physikalische und Theoretische Chemie Julius-Maximilians-Universität Würzburg Emil-Fischer-Straße 42 97074 Würzburg Deutschland
| | - Tom E. Stennett
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
- Institute for Sustainable Chemistry & Catalysis with Boron Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
| | - Ivo Krummenacher
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
- Institute for Sustainable Chemistry & Catalysis with Boron Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
| | - Rian D. Dewhurst
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
- Institute for Sustainable Chemistry & Catalysis with Boron Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
| | - Bernd Engels
- Institut für Physikalische und Theoretische Chemie Julius-Maximilians-Universität Würzburg Emil-Fischer-Straße 42 97074 Würzburg Deutschland
| | - Holger Braunschweig
- Institut für Anorganische Chemie Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
- Institute for Sustainable Chemistry & Catalysis with Boron Julius-Maximilians-Universität Würzburg Am Hubland 97070 Würzburg Deutschland
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10
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Brückner T, Fantuzzi F, Stennett TE, Krummenacher I, Dewhurst RD, Engels B, Braunschweig H. Isolation of Neutral, Mono-, and Dicationic B 2 P 2 Rings by Diphosphorus Addition to a Boron-Boron Triple Bond. Angew Chem Int Ed Engl 2021; 60:13661-13665. [PMID: 33844394 PMCID: PMC8252364 DOI: 10.1002/anie.202102218] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/09/2021] [Indexed: 01/10/2023]
Abstract
The NHC-stabilised diboryne (B2 (SIDep)2 ; SIDep=1,3-bis(2,6-diethylphenyl)imidazolin-2-ylidene) undergoes a high-yielding P-P bond activation with tetraethyldiphosphine at room temperature to form a B2 P2 heterocycle via a diphosphoryldiborene by 1,2-diphosphination. The heterocycle can be oxidised to a radical cation and a dication, respectively, depending on the oxidant used and its counterion. Starting from the planar, neutral 1,3-bis(alkylidene)-1,3-diborata-2,4-diphosphoniocyclobutane, each oxidation step leads to decreased B-B distances and loss of planarity by cationisation. X-ray analyses in conjunction with DFT and CASSCF/NEVPT2 calculations reveal closed-shell singlet, butterfly-shaped structures for the NHC-stabilised dicationic B2 P2 rings, with their diradicaloid, planar-ring isomers lying close in energy.
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Affiliation(s)
- Tobias Brückner
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany
| | - Felipe Fantuzzi
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany.,Institute for Physical and Theoretical Chemistry, Julius-Maximilians-Universität Würzburg, Emil-Fischer-Strasse 42, 97074, Würzburg, Germany
| | - Tom E Stennett
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany
| | - Ivo Krummenacher
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany
| | - Rian D Dewhurst
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany
| | - Bernd Engels
- Institute for Physical and Theoretical Chemistry, Julius-Maximilians-Universität Würzburg, Emil-Fischer-Strasse 42, 97074, Würzburg, Germany
| | - Holger Braunschweig
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany.,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97070, Würzburg, Germany
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11
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Sharma MK, Wölper C, Haberhauer G, Schulz S. Vielseitiges Gallaphosphen: Von einem Ga‐P‐Ga‐Heteroallylkation über CO
2
‐Speicherung hin zu C(sp
3
)‐H‐Bindungsaktivierung. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014381] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mahendra K. Sharma
- Institut für Anorganische Chemie und Center für Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Christoph Wölper
- Institut für Anorganische Chemie und Center für Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Gebhard Haberhauer
- Institut für Organische Chemie Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
| | - Stephan Schulz
- Institut für Anorganische Chemie und Center für Nanointegration Duisburg-Essen (CENIDE) Universität Duisburg-Essen Universitätsstraße 5–7 45141 Essen Deutschland
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12
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Sharma MK, Wölper C, Haberhauer G, Schulz S. Multi-Talented Gallaphosphene for Ga-P-Ga Heteroallyl Cation Generation, CO 2 Storage, and C(sp 3 )-H Bond Activation. Angew Chem Int Ed Engl 2021; 60:6784-6790. [PMID: 33368922 PMCID: PMC7986129 DOI: 10.1002/anie.202014381] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Indexed: 11/12/2022]
Abstract
Gallaphosphene L(Cl)GaPGaL (2; L=HC[C(Me)N(2,6-i-Pr2 C6 H3 )]2 ), which is synthesized by reaction of LGa(Cl)PCO (1) with LGa, reacts with [Na(OCP)(dioxane)2.5 ] to LGa(OCP)PGaL (3), whereas chloride abstraction with LiBArF 4 yields [LGaPGaL][BArF 4 ] (4; BArF 4 =B(C6 F5 )4 ). 4 represents a heteronuclear analog of the allyl cation according to quantum chemical calculations. Remarkably, 2 reversibly reacts with CO2 to yield L(Cl)Ga-P[μ-C(O)O]2 GaL (5), while reactions with acetophenone and acetone selectively give compounds 6 and 7 by C(sp3 )-H bond activation.
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Affiliation(s)
- Mahendra K. Sharma
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Christoph Wölper
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Gebhard Haberhauer
- Institute of Organic ChemistryUniversity of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Stephan Schulz
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
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13
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Abstract
Since the discovery that the so-called "double-bond" rule could be broken, the field of molecular main group multiple bonds has expanded rapidly. With the majority of homodiatomic double and triple bonds realised within the p-block, along with many heterodiatomic combinations, this Minireview examines the reactivity of these compounds with a particular emphasis on small molecule activation. Furthermore, whilst their ability to act as transition metal mimics has been explored, their catalytic behaviour is somewhat limited. This Minireview aims to highlight the potential of these complexes towards catalytic application and their role as synthons in further functionalisations making them a versatile tool for the modern synthetic chemist.
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Affiliation(s)
- Catherine Weetman
- WestCHEMDepartment of Pure and Applied ChemistryUniversity of StrathclydeGlasgowG1 1XLUK
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14
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Li B, Wölper C, Haberhauer G, Schulz S. Synthesis and Reactivity of Heteroleptic Ga-P-C Allyl Cation Analogues. Angew Chem Int Ed Engl 2021; 60:1986-1991. [PMID: 33034935 PMCID: PMC7894565 DOI: 10.1002/anie.202012595] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Indexed: 11/28/2022]
Abstract
Oxidative addition of cyclic alkyl(amino)carbene-coordinated phosphinidenes (Me cAAC)PX to LGa affords gallium-coordinated phosphinidenes LGa(X)-P(Me cAAC) (L=HC[C(Me)N(2,6-i-Pr2 C6 H3 )]2 ; X=Cl 1, Br 2), which react with NaBArF 4 and LiAl(ORF )4 to [LGaP(Me cAAC)][An] (An=B(C6 H3 (CF3 )2 )4 3, B(C6 F5 )4 4, Al(OC(CF3 )3 )4 5). The cations in 3-5 show substantial Ga-P double bond character and represent heteronuclear analogues of allyl cations according to quantum chemical calculations. The reaction of 4 with 4-dimethylaminopyridine (dmap) to adduct 6 confirms the strong electrophilic nature of the gallium center, whereas 5 reacts with ethyl isocyanate with C-C bond formation to the γ-C atom of the β-diketiminate ligand and formation of compound 7.
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Affiliation(s)
- Bin Li
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Christoph Wölper
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Gebhard Haberhauer
- Institute of Organic Chemistry, University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
| | - Stephan Schulz
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE)University of Duisburg-EssenUniversitätsstrasse 5–745141EssenGermany
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15
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Li B, Wölper C, Haberhauer G, Schulz S. Synthesis and Reactivity of Heteroleptic Ga‐P‐C Allyl Cation Analogues. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012595] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bin Li
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Universitätsstrasse 5–7 45141 Essen Germany
| | - Christoph Wölper
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Universitätsstrasse 5–7 45141 Essen Germany
| | - Gebhard Haberhauer
- Institute of Organic Chemistry, University of Duisburg-Essen Universitätsstrasse 5–7 45141 Essen Germany
| | - Stephan Schulz
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE) University of Duisburg-Essen Universitätsstrasse 5–7 45141 Essen Germany
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16
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Wilson DWN, Feld J, Goicoechea JM. A Phosphanyl-Phosphagallene that Functions as a Frustrated Lewis Pair. Angew Chem Int Ed Engl 2020; 59:20914-20918. [PMID: 32615007 PMCID: PMC7693089 DOI: 10.1002/anie.202008207] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Indexed: 12/05/2022]
Abstract
Phosphagallenes (1 a/1 b) featuring double bonds between phosphorus and gallium were synthesized by reaction of (phosphanyl)phosphaketenes with the gallium carbenoid Ga(Nacnac) (Nacnac=HC[C(Me)N(2,6-i-Pr2 C6 H3 )]2 ). The stability of these species is dependent on the saturation of the phosphanyl moiety. 1 a, which bears an unsaturated phosphanyl ring, rearranges in solution to yield a spirocyclic compound (2) which contains a P=P bond. The saturated variant 1 b is stable even at elevated temperatures. 1 b behaves as a frustrated Lewis pair capable of activation of H2 and forms a 1:1 adduct with CO2 .
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Affiliation(s)
- Daniel W. N. Wilson
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory12 Mansfield RoadOxfordOX1 3TAUK
| | - Joey Feld
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory12 Mansfield RoadOxfordOX1 3TAUK
| | - Jose M. Goicoechea
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory12 Mansfield RoadOxfordOX1 3TAUK
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17
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Wilson DWN, Feld J, Goicoechea JM. A Phosphanyl‐Phosphagallene that Functions as a Frustrated Lewis Pair. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008207] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daniel W. N. Wilson
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Joey Feld
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
| | - Jose M. Goicoechea
- Department of Chemistry University of Oxford Chemistry Research Laboratory 12 Mansfield Road Oxford OX1 3TA UK
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18
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Abstract
Boragermene 3 featuring a double bond between the Ge and dicoordinate B atoms has been synthesized for the first time by reacting the cyclic (alkyl)(boryl)germylene-PMe3 adduct 1 with Cl2 BN(SiMe3 )2 followed by reductive dehalogenation with KC8 . Addition of a Lewis base (Me NHC) to 3 leads to the formation of the corresponding adduct 4, which shows double bond character between the Ge and tricoordinate B atoms. Compound 3 undergoes hydrogenation with H2 concomitant with a complete scission of the Ge=B bond.
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Affiliation(s)
- Bin Rao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore, 637371, Singapore
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore, 637371, Singapore
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19
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Affiliation(s)
- Bin Rao
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Nanyang Link 21 Singapore 637371 Singapore
| | - Rei Kinjo
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University Nanyang Link 21 Singapore 637371 Singapore
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20
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Krüger J, Ganesamoorthy C, John L, Wölper C, Schulz S. A General Pathway for the Synthesis of Gallastibenes containing Ga=Sb Double Bonds. Chemistry 2018; 24:9157-9164. [PMID: 29665160 DOI: 10.1002/chem.201801813] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Julia Krüger
- Faculty of Chemistry; University of Duisburg-Essen; Center for Nanointegration Duisburg-Essen (CENIDE); Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
| | - Chelladurai Ganesamoorthy
- Faculty of Chemistry; University of Duisburg-Essen; Center for Nanointegration Duisburg-Essen (CENIDE); Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
| | - Lukas John
- Faculty of Chemistry; University of Duisburg-Essen; Center for Nanointegration Duisburg-Essen (CENIDE); Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
| | - Christoph Wölper
- Faculty of Chemistry; University of Duisburg-Essen; Center for Nanointegration Duisburg-Essen (CENIDE); Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
| | - Stephan Schulz
- Faculty of Chemistry; University of Duisburg-Essen; Center for Nanointegration Duisburg-Essen (CENIDE); Universitätsstr. 7, S07 S03 C30 45141 Essen Germany
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21
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Liu S, Légaré MA, Auerhammer D, Hofmann A, Braunschweig H. The First Boron-Tellurium Double Bond: Direct Insertion of Heavy Chalcogens into a Mn=B Double Bond. Angew Chem Int Ed Engl 2017; 56:15760-15763. [DOI: 10.1002/anie.201708729] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 10/02/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Siyuan Liu
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Marc-André Légaré
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Dominic Auerhammer
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Alexander Hofmann
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Holger Braunschweig
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
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22
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Liu S, Légaré MA, Auerhammer D, Hofmann A, Braunschweig H. Eine Bor-Tellur-Doppelbindung: direkte Insertion in eine Mn=B-Doppelbindung. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201708729] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Siyuan Liu
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
| | - Marc-André Légaré
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
| | - Dominic Auerhammer
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
| | - Alexander Hofmann
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
| | - Holger Braunschweig
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
- Institute for Sustainable Chemistry and Catalysis with Boron; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Deutschland
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23
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Price AN, Nichol GS, Cowley MJ. Phosphaborenes: Accessible Reagents for the Synthesis of C−C/P−B Isosteres. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705050] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Amy N. Price
- EaStCHEMSchool of ChemistryUniversity of Edinburgh Edinburgh EH9 3FJ UK
| | - Gary S. Nichol
- EaStCHEMSchool of ChemistryUniversity of Edinburgh Edinburgh EH9 3FJ UK
| | - Michael J. Cowley
- EaStCHEMSchool of ChemistryUniversity of Edinburgh Edinburgh EH9 3FJ UK
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24
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Price AN, Nichol GS, Cowley MJ. Phosphaborenes: Accessible Reagents for the Synthesis of C-C/P-B Isosteres. Angew Chem Int Ed Engl 2017. [PMID: 28643472 DOI: 10.1002/anie.201705050] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Formal exchange of C=C units with isoelectronic B=N or B=P units can provide access to molecules with unique electronic or chemical properties. Herein, we report the simple solution-phase generation of highly reactive phosphaborenes, RP=BR, and demonstrate their use for the introduction of P=B units into organic systems. Ring opening of a P-B-containing cyclobutene isostere provided access to unique 1,4-boraphosphabutadiene systems with conjugated main-group multiple bonds.
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Affiliation(s)
- Amy N Price
- EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | - Gary S Nichol
- EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
| | - Michael J Cowley
- EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK
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25
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Price AN, Cowley MJ. Base-Stabilized Phosphinidene Boranes by Silylium-Ion Abstraction. Chemistry 2016; 22:6248-52. [DOI: 10.1002/chem.201600836] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Amy N. Price
- EaStCHEM; School of Chemistry; University of Edinburgh; Edinburgh EH9 3FJ UK
| | - Michael J. Cowley
- EaStCHEM; School of Chemistry; University of Edinburgh; Edinburgh EH9 3FJ UK
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26
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Jetzfellner R, Nöth H, Paine RT. Phosphino[tris(trimethylsilyl)methyl]Boranes and 2,4-Bis[tris(trimethylsilyl)methyl]-1,3,2,4-diphosphadiboretanes [1]. Z Anorg Allg Chem 2007. [DOI: 10.1002/zaac.200600335] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Grundei S, Nöth H, Paine RT. Contributions to the Chemistry of Boron, 233. Reactions of a 1,2,3,4‐Diphosphadiboretane with Some Carbonylmetal Compounds. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19961291015] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Stefan Grundei
- Institute of Inorganic Chemistry, University of Munich, Meiserstraße 1, D‐80333 München, Germany
| | - Heinrich Nöth
- Institute of Inorganic Chemistry, University of Munich, Meiserstraße 1, D‐80333 München, Germany
| | - Robert T. Paine
- Department of Chemistry, University of New Mexico, Albuquerque, NM 87131‐1096, USA
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28
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Linti G, Nöth H, Paine RT. Beiträge zur Chemie des Bors, 216. Über die Komplexbildung von 1,3,2,4‐Diphosphadiboretanen mit Pentacarbonylchrom sowie über die Darstellung und Reaktivität von Borylidenphosphan‐Komplexen. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/cber.19931260405] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Gerald Linti
- Institut für Anorganische Chemie der Universität Münchena, Meiserstraße 1, W‐8000 München 2
| | - Heinrich Nöth
- Institut für Anorganische Chemie der Universität Münchena, Meiserstraße 1, W‐8000 München 2
| | - Robert T. Paine
- Department of Chemistry, University of New Mexicob, Albuquerque, USA
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29
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Knabel K, Klapötke TM, Nöth H, Paine RT, Schwab I. A Bicyclic P–P‐Bridged 1,3,2,4‐Diphosphadiboretane Cation and an Imino(phosphinidene)borane–AlBr
3
Adduct. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200400372] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Klaus Knabel
- Department of Chemistry, University of Munich, Butenandtstr. 5–13, 81377 München, Germany
| | - Thomas M. Klapötke
- Department of Chemistry, University of Munich, Butenandtstr. 5–13, 81377 München, Germany
| | - Heinrich Nöth
- Department of Chemistry, University of Munich, Butenandtstr. 5–13, 81377 München, Germany
| | - Robert T. Paine
- Department of Chemistry, University of New Mexico, Albuquerque, NM 87131, USA
| | - Ingo Schwab
- Department of Chemistry, University of Munich, Butenandtstr. 5–13, 81377 München, Germany
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Drieß M. Mehrfachbindungen zwischen schweren Hauptgruppenelementen? Von der klassischen π-Bindung zu strukturchemischem Neuland. CHEM UNSERER ZEIT 2004. [DOI: 10.1002/ciuz.19930270306] [Citation(s) in RCA: 9] [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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31
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Bachler V, Metzler-Nolte N. The π-Electron-Accepting Ability of the Boron Atom in Ethynylboranes and Related Compounds – An Approximate Weight Computation for Resonance Structures⋆. Eur J Inorg Chem 1998. [DOI: 10.1002/(sici)1099-0682(199806)1998:6<733::aid-ejic733>3.0.co;2-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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32
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Södner M, Sandor M, Schier A, Schmidbaur H. Synthesis Structure and Photoluminescence of 1,2-Disila-acenaphthene Si2C10H10 and 1,2-Diaryldisilane Reference Compounds. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/cber.19971301119] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Riegel B, Heckmann G, Hausen HD, Schwarz W, Binder H, Fluck E, Grundei S, N�th H, Schmidt M, McKee ML, Dransfeld A, v. R. Schleyer P. 1,2-Diphospha-3,4-diboretane und 1,3-Diphospha-2,4,5-triborolan: Synthese und Struktur sowie Berechnungen zur Molek�lstruktur �ber den Einflu� von Substituenten auf die Struktur von 1,2-Diphospha-3,4-diboretan. Z Anorg Allg Chem 1995. [DOI: 10.1002/zaac.19956210702] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Kaufmann B, Nöth H, Paine RT, Polborn K, Thomann M. Carbonylmetall-Komplexe von Diphosphadiboretan (mesBPtBu)2 und von Triphosphatriborin (mesBPtBu)3. Angew Chem Int Ed Engl 1993. [DOI: 10.1002/ange.19931051037] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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35
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Dou D, Westerhausen M, Wood GL, Duesler EN, Paine RT, Linti G, Nöth H. Contributions to the Chemistry of Boron, 214. Synthesis and Reaction Chemistry of Aminophosphanylboranes. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/cber.19931260215] [Citation(s) in RCA: 34] [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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