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Aman M, Dostál L, Růžička A, Růžičková Z, Jambor R. B-substituted group 1 phosphides: synthesis and reactivity. Dalton Trans 2023; 52:16870-16885. [PMID: 37916487 DOI: 10.1039/d3dt02568c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
1-Boryl-8-phosphinonaphthalenes 1-BCy2-8-PCl2-C10H6 (1) and 1-BCy2-8-PPhCl-C10H6 (2) were prepared and used as starting materials for the synthesis of B-substituted phosphides. The reduction of 1 and 2 by Mg provided neutral compounds [1-BCy-8-PCy-C10H6]2 (3) and [1-BCy2-8-PPh-C10H6]2 (4). Compound 3 represents the dimer of phosphinoborane 1-BCy-8-PCy-C10H6 while complex 4 is a rare example of a discrete B ← P coordinated diphosphine. The reduction of 2 by Na or K in THF yielded B-substituted group 1 phosphides [Na(THF)3]+[1-BCy2-8-PPh-C10H6]- (5) and {[K(THF)2]+[1-BCy2-8-PPh-C10H6]-}∞ (6), which structurally resembled bulky group 1 phosphides. Complex 5 showed easy activation of elemental chalcogens E (E = O, S, Se) to give B-substituted chalcogenophosphinites {[Na(THF)2]+[1-BCy2-8-P(E)Ph-C10H6]}2 (E = O (7), S (8), Se (9)) as the products of chalcogen insertion into the P-Na bond. Importantly no oxidation to dichalcogenophosphinates was observed. Compound 5 is tolerant of the CO polar bonds in organic substrates and the reactions of 5 with 2,3-butanedione or an acyl chloride provided {[Na(THF)2]+[1-BCy2-8-P{CHC(O)C(Me)O}Ph-C10H6]-}2 (10) and [1-BCy2-8-P{C(O)tBu}Ph-C10H6] (11). Finally, B-coordinated phosphatetrylenes [1-BCy2-8-P(SnL)Ph-C10H6] (12) and [1-BCy2-8-P(PbL)Ph-C10H6] (13) (L is {2,6-(Me2NCH2)C6H3}-) were also prepared by substitution reactions of 5.
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Affiliation(s)
- Michal Aman
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic.
| | - Libor Dostál
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic.
| | - Aleš Růžička
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic.
| | - Zdenka Růžičková
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic.
| | - Roman Jambor
- Department of General and Inorganic Chemistry, University of Pardubice, 532 10 Pardubice, Czech Republic.
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Izod K, Evans P, Waddell PG. P-Ge/Sn π Interactions Versus Arene···Ge/Sn Contacts for the Stabilization of Diphosphatetrylenes, (R 2P) 2E (E = Ge, Sn). Inorg Chem 2020; 59:863-874. [PMID: 31855418 DOI: 10.1021/acs.inorgchem.9b03109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The diphosphatetrylenes {(Dipp)(R')P}2E [R' = Mes, E = Ge (1Ge), Sn (1Sn); R' = CH(SiMe3)2, E = Sn (2Sn)] have been isolated and characterized by multinuclear and variable temperature NMR spectroscopy and X-ray crystallography [Dipp = 2,6-iPr2C6H3, Mes = 2,4,6-Me3C6H2]. All three compounds crystallize as discrete monomers with two pyramidal phosphorus centers. However, variable-temperature 31P{1H} NMR spectroscopy indicates that both 1Ge and 2Sn are subject to dynamic exchange between this form and a form containing one planar and one pyramidal phosphorus center in solution. In contrast, 1Sn retains two pyramidal phosphorus centers in solution and exhibits no evidence for exchange with a form containing a planar phosphorus center. The related compound [{(Me3Si)2CH}2P]2Sn (3Sn) was isolated in very low yield and was shown by X-ray crystallography to possess one planar and one pyramidal phosphorus center in the solid state. DFT calculations reveal that the conformations of 1Ge, 1Sn, and 2Sn observed in the solid state are significantly stabilized by the delocalization of electron density from the aromatic rings into the vacant p-orbital at the tetrel center. Thus, for diphosphatetrylenes possessing aromatic substituents at phosphorus, stabilization may be achieved by two competing mechanisms: (i) planarization of one phosphorus center and consequent delocalization of the phosphorus lone pair into the vacant tetrel p-orbital or (ii) pyramidalization of both phosphorus centers and delocalization of aromatic π-electron density into the tetrel p-orbital. For 3Sn, which lacks aromatic groups, only the former stabilization mechanism is possible.
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Affiliation(s)
- Keith Izod
- Main Group Chemistry Laboratories, School of Chemistry , Newcastle University , Newcastle upon Tyne , NE1 7RU , United Kingdom
| | - Peter Evans
- Main Group Chemistry Laboratories, School of Chemistry , Newcastle University , Newcastle upon Tyne , NE1 7RU , United Kingdom
| | - Paul G Waddell
- Main Group Chemistry Laboratories, School of Chemistry , Newcastle University , Newcastle upon Tyne , NE1 7RU , United Kingdom
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3
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Schwarz E, Mueller SK, Weinberger G, Torvisco A, Flock M. Synthesis and Theoretical Investigation of Diphosphastannylenes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00258] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elisabeth Schwarz
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/IV, 8010 Graz, Austria
| | - Stefan K. Mueller
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/IV, 8010 Graz, Austria
| | - Gernot Weinberger
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/IV, 8010 Graz, Austria
| | - Ana Torvisco
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/IV, 8010 Graz, Austria
| | - Michaela Flock
- Institute of Inorganic Chemistry, Graz University of Technology, Stremayrgasse 9/IV, 8010 Graz, Austria
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4
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Izod K, Evans P, Waddell PG, Probert MR. Remote Substituent Effects on the Structures and Stabilities of P═E π-Stabilized Diphosphatetrylenes (R2P)2E (E = Ge, Sn). Inorg Chem 2016; 55:10510-10522. [DOI: 10.1021/acs.inorgchem.6b01566] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keith Izod
- Main Group Chemistry Laboratories,
School of Chemistry, Newcastle University, Newcastle upon Tyne NE1
7RU, U.K
| | - Peter Evans
- Main Group Chemistry Laboratories,
School of Chemistry, Newcastle University, Newcastle upon Tyne NE1
7RU, U.K
| | - Paul G. Waddell
- Main Group Chemistry Laboratories,
School of Chemistry, Newcastle University, Newcastle upon Tyne NE1
7RU, U.K
| | - Michael R. Probert
- Main Group Chemistry Laboratories,
School of Chemistry, Newcastle University, Newcastle upon Tyne NE1
7RU, U.K
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5
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Arras J, Eichele K, Maryasin B, Schubert H, Ochsenfeld C, Wesemann L. Intermolecular 119Sn,31P Through-Space Spin–Spin Coupling in a Solid Bivalent Tin Phosphido Complex. Inorg Chem 2016; 55:4669-75. [DOI: 10.1021/acs.inorgchem.6b00573] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Janet Arras
- Institut
für Anorganische Chemie, Universität Tübingen, Auf
der Morgenstelle 18, 72076 Tübingen, Germany
- Theoretische
Chemie, University of Munich (LMU Munich), Butenandtstraße 7, 81377 Munich, Germany
| | - Klaus Eichele
- Institut
für Anorganische Chemie, Universität Tübingen, Auf
der Morgenstelle 18, 72076 Tübingen, Germany
| | - Boris Maryasin
- Theoretische
Chemie, University of Munich (LMU Munich), Butenandtstraße 7, 81377 Munich, Germany
| | - Hartmut Schubert
- Institut
für Anorganische Chemie, Universität Tübingen, Auf
der Morgenstelle 18, 72076 Tübingen, Germany
| | - Christian Ochsenfeld
- Theoretische
Chemie, University of Munich (LMU Munich), Butenandtstraße 7, 81377 Munich, Germany
| | - Lars Wesemann
- Institut
für Anorganische Chemie, Universität Tübingen, Auf
der Morgenstelle 18, 72076 Tübingen, Germany
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6
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Coles MP. The role of the bis-trimethylsilylamido ligand, [N{SiMe3}2]−, in main group chemistry. Part 2: Structural chemistry of the metallic p-block elements. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.01.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Freitag S, Krebs KM, Henning J, Hirdler J, Schubert H, Wesemann L. Stannylene-Based Lewis Pairs. Organometallics 2013. [DOI: 10.1021/om400736e] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Sarah Freitag
- Institute
of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Kilian M. Krebs
- Institute
of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Jens Henning
- Institute
of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Janina Hirdler
- Institute
of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Hartmut Schubert
- Institute
of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Lars Wesemann
- Institute
of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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Freitag S, Henning J, Schubert H, Wesemann L. Phosphastannirane: A Phosphorus/Tin(II) Lewis Pair that Undergoes Alkyne and Alkene Addition. Angew Chem Int Ed Engl 2013; 52:5640-3. [DOI: 10.1002/anie.201301153] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Indexed: 11/09/2022]
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9
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Freitag S, Henning J, Schubert H, Wesemann L. Phosphastanniran: Ein Phosphor/Zinn(II)-Lewis-Paar, das Alkine und Alkene addiert. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301153] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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