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Frenette BL, Rivard E. Frustrated Lewis Pair Chelation in the p-Block. Chemistry 2023; 29:e202302332. [PMID: 37677126 DOI: 10.1002/chem.202302332] [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: 07/20/2023] [Revised: 09/06/2023] [Accepted: 09/07/2023] [Indexed: 09/09/2023]
Abstract
Frustrated Lewis pairs (FLPs) have been the subject of considerable study since the field's inception. While much of the research into FLPs has centered around small molecule activation for diverse stoichiometric and catalytic transformations, intramolecular FLPs also show promise as chelating ligands. The cooperative action of Lewis basic and acidic moieties enables intramolecular FLPs to stabilize low oxidation state centers and (consequently) reactive molecular fragments through a donor-acceptor approach, making them an attractive ligand class in main group element chemistry. This review outlines the state of FLP chelation to date throughout the p-block, encompassing primarily groups 13-16.
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Affiliation(s)
- Brandon L Frenette
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2, Canada
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, T6G 2G2, Canada
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2
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Braese J, Lehnfeld F, Annibale VT, Oswald T, Beckhaus R, Manners I, Scheer M. Titanium-Catalyzed Polymerization of a Lewis Base-Stabilized Phosphinoborane. Chemistry 2023; 29:e202301741. [PMID: 37498679 DOI: 10.1002/chem.202301741] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/21/2023] [Accepted: 07/27/2023] [Indexed: 07/29/2023]
Abstract
The reaction of the Lewis base-stabilized phosphinoborane monomer tBuHPBH2 NMe3 (2 a) with catalytic amounts of bis(η5 :η1 -adamantylidenepentafulvene)titanium (1) provides a convenient new route to the polyphosphinoborane [tBuPH-BH2 ]n (3 a). This method offers access to high molar mass materials under mild conditions and with short reaction times (20 °C, 1 h in toluene). It represents an unprecedented example of a transition metal-mediated polymerization of a Lewis base-stabilized Group 13/15 compound. Preliminary studies of the substrate scope and a potential mechanism are reported.
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Affiliation(s)
- Jens Braese
- Universität Regensburg, Institut für Anorganische Chemie, 94053, Regensburg, Germany
| | - Felix Lehnfeld
- Universität Regensburg, Institut für Anorganische Chemie, 94053, Regensburg, Germany
| | - Vincent T Annibale
- University of Victoria, Department of Chemistry, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Tim Oswald
- Carl von Ossietzky Universität Oldenburg, Institut für Chemie Carl-von-Ossietzky, Straße 9-11, 26129, Oldenburg, Germany
| | - Rüdiger Beckhaus
- Carl von Ossietzky Universität Oldenburg, Institut für Chemie Carl-von-Ossietzky, Straße 9-11, 26129, Oldenburg, Germany
| | - Ian Manners
- University of Victoria, Department of Chemistry, 3800 Finnerty Road, Victoria, BC V8P 5C2, Canada
| | - Manfred Scheer
- Universität Regensburg, Institut für Anorganische Chemie, 94053, Regensburg, Germany
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3
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Szlosek R, Seidl M, Balázs G, Scheer M. A General Pathway towards NHC ⋅ GaH 2 (OTf) Adducts - The Key for the Synthesis of NHC-Stabilized Cationic 13/15 Chain Compounds of Gallium. Chemistry 2023; 29:e202301752. [PMID: 37401824 DOI: 10.1002/chem.202301752] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 07/05/2023]
Abstract
A general pathway towards NHC (NHC=N-heterocyclic carbene)-stabilized galliummonotriflates NHC ⋅ GaH2 (OTf) (NHC=IDipp, 1 a; IPr2 Me2 , 1 b; IMes, 1 c; IDipp=1,3-bis(2,6-diisopropylphenyl)-imidazolin-2-ylidene, IPr2 Me2 =1,3-bis-(diisopropyl)-4,5-dimethyl-imidazolin-2-ylidene, IMes=1,3-bis(2,4,6-trimethylphenyl)-imidazolin-2-ylidene) is reported. Quantum chemical calculations give detailed insight into the underlying reaction pathway. The obtained NHC ⋅ GaH2 (OTf) compounds were employed in reactions with donor-stabilized pnictogenylboranes to synthesize the elusive cationic parent 13/15/13 chain compounds [IDipp ⋅ GaH2 ER2 E'H2 ⋅ D][OTf] (3 a: D=IDipp, E=P, E'=B, R=H; 3 b: D=NMe3 , E=P, E'=B, R=H, 3 c: D=NMe3 , E=P, E'=B, R=Ph, 3 d: D=IDipp, E=P, E'=Ga, R=H). Supporting computational studies highlight the electronic features of the products.
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Affiliation(s)
- Robert Szlosek
- Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany
| | - Michael Seidl
- Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany
| | - Gábor Balázs
- Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93053, Regensburg, Germany
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4
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Prey SE, Gilmer J, Teichmann SV, Čaić L, Wenisch M, Bolte M, Virovets A, Lerner HW, Fantuzzi F, Wagner M. Synthesis, bridgehead functionalization, and photoisomerization of 9,10-diboratatriptycene dianions. Chem Sci 2023; 14:5316-5322. [PMID: 37234897 PMCID: PMC10207881 DOI: 10.1039/d3sc00555k] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/02/2023] [Indexed: 04/02/2024] Open
Abstract
9,10-Diboratatriptycene salts M2[RB(μ-C6H4)3BR] (R = H, Me; M+ = Li+, K+, [n-Bu4N]+) have been synthesized via [4 + 2] cycloaddition between doubly reduced 9,10-dihydro-9,10-diboraanthracenes M2[DBA] and benzyne, generated in situ from C6H5F and C6H5Li or LiN(i-Pr)2. [HB(μ-C6H4)3BH]2- reacts with CH2Cl2 to form quantitatively the bridgehead-derivatized [ClB(μ-C6H4)3BCl]2-, while twofold H- abstraction with B(C6F5)3 in the presence of SMe2 leads cleanly to the diadduct (Me2S)B(μ-C6H4)3B(SMe2). Photoisomerization of K2[HB(μ-C6H4)3BH] (THF, medium-pressure Hg lamp) provides facile access to diborabenzo[a]fluoranthenes, a little explored form of boron-doped polycyclic aromatic hydrocarbons. According to DFT calculations, the underlying reaction mechanism consists of three main steps: (i) photoinduced di-π-borate rearrangement, (ii) "walk reaction" of a BH unit, and (iii) boryl anion-like C-H activation.
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Affiliation(s)
- Sven E Prey
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
| | - Jannik Gilmer
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
| | - Samira V Teichmann
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
| | - Luis Čaić
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
| | - Mischa Wenisch
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
| | - Michael Bolte
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
| | - Alexander Virovets
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
| | - Felipe Fantuzzi
- School of Chemistry and Forensic Science, University of Kent Park Wood Rd Canterbury CT2 7NH UK
| | - Matthias Wagner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt Max-von-Laue-Straße 7 D-60438 Frankfurt am Main Germany
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5
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Ordyszewska A, Chojnacki J, Grubba R. Reactivity of triphosphinoboranes towards H 3B·SMe 2: access to derivatives of boraphosphacycloalkanes with diverse substituents. Dalton Trans 2023; 52:4161-4166. [PMID: 36891892 DOI: 10.1039/d3dt00116d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Triphosphinoboranes activated the B-H bond in the BH3 molecule without any catalysts at room temperature. Hydroboration reactions led to boraphosphacyloalkanes with diverse structures. The outcomes of reactions depend on the size of the phosphanyl substituent on the boron atom of the parent triphosphinoborane, where derivatives of boraphosphacyclobutane and boraphosphacyclohexane were obtained. Furthermore, the precursor of triphosphinoboranes, namely bromodiphosphinoborane, also exhibited high reactivity towards H3B·SMe2, yielding bromo-substituted boraphosphacyclobutane. The obtained products were characterized by heteronuclear NMR spectroscopy, single crystal X-ray diffraction, and elemental analysis.
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Affiliation(s)
- Anna Ordyszewska
- Department of Inorganic Chemistry, Faculty of Chemistry and Advanced Materials Center, Gdańsk University of Technology, ul. Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Jarosław Chojnacki
- Department of Inorganic Chemistry, Faculty of Chemistry and Advanced Materials Center, Gdańsk University of Technology, ul. Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Rafał Grubba
- Department of Inorganic Chemistry, Faculty of Chemistry and Advanced Materials Center, Gdańsk University of Technology, ul. Narutowicza 11/12, 80-233 Gdańsk, Poland.
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6
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Wiebe MA, Kundu S, LaPierre EA, Patrick BO, Manners I. Transition-Metal-Free Dehydropolymerization of Phosphine-Boranes at Ambient Temperature. Chemistry 2023; 29:e202202897. [PMID: 36196020 DOI: 10.1002/chem.202202897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Indexed: 11/16/2022]
Abstract
Stoichiometric reaction of phosphine-borane adducts RR'PH⋅BH3 (R=Ph, R'=H, Ph, Et, and R=R'=t Bu) with the strong acid HNTf2 (Tf=SO2 CF3 ) leads to H2 elimination and the formation of the triflimido derivatives, RR'PH⋅BH2 (NTf2 ). Subsequent deprotonation by using bases, such as diisopropylethylamine or the carbene IPr (IPr=N,N'-bis(2,6-diisopropylphenyl)imidazol-2-ylidene), led to the formation of P-mono- or -disubstituted polyphosphinoboranes [RR'P-BH2 ]n . Evidence for the intermediacy of transient phosphinoborane monomers, RR'PBH2 , was provided by trapping reactions.
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Affiliation(s)
- Matthew A Wiebe
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd, Victoria, British Columbia, V8P 5 C2, Canada
| | - Subrata Kundu
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd, Victoria, British Columbia, V8P 5 C2, Canada.,Department of Chemistry, Indian Institute of Technology Delhi Hauz Khas, New Delhi, 110016, India
| | - Etienne A LaPierre
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd, Victoria, British Columbia, V8P 5 C2, Canada
| | - Brian O Patrick
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada
| | - Ian Manners
- Department of Chemistry, University of Victoria, 3800 Finnerty Rd, Victoria, British Columbia, V8P 5 C2, Canada
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7
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Schön F, Sigmund LM, Schneider F, Hartmann D, Wiebe MA, Manners I, Greb L. Calix[4]pyrrolato Aluminate Catalyzes the Dehydrocoupling of Phenylphosphine Borane to High Molar Weight Polymers. Angew Chem Int Ed Engl 2022; 61:e202202176. [PMID: 35235698 PMCID: PMC9313825 DOI: 10.1002/anie.202202176] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Indexed: 01/13/2023]
Abstract
High molar weight polyphosphinoboranes represent materials with auspicious properties, but their preparation requires transition metal‐based catalysts. Here, calix[4]pyrrolato aluminate is shown to induce the dehydropolymerization of phosphine boranes to high molar mass polyphosphinoboranes (up to Mn=43 000 Da). Combined GPC and 31P DOSY NMR spectroscopic analyses, quantum chemical computations, and stoichiometric reactions disclose a P−H bond activation by the cooperative action of the square‐planar aluminate and the electron‐rich ligand framework. This first transition metal‐free catalyst for P−B dehydrocoupling overcomes the problem of residual d‐block metal impurities in the resulting polymers that might interfere with the reproducibility of the properties for this emerging class of inorganic materials.
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Affiliation(s)
- Florian Schön
- Department of Chemistry University of Victoria Victoria BC, V8P 5C2 Canada
| | - Lukas M. Sigmund
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Friederike Schneider
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Deborah Hartmann
- Department of Chemistry University of Victoria Victoria BC, V8P 5C2 Canada
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthew A. Wiebe
- Department of Chemistry University of Victoria Victoria BC, V8P 5C2 Canada
| | - Ian Manners
- Department of Chemistry University of Victoria Victoria BC, V8P 5C2 Canada
| | - Lutz Greb
- Anorganische Chemie, Freie Universität Berlin Fabeckstraße 34–36 14195 Berlin Germany
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8
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Knights AW, Nascimento MA, Manners I. An investigation of polyphosphinoboranes as flame-retardant materials. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124795] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Schön F, Sigmund LM, Schneider F, Hartmann D, Wiebe MA, Manners I, Greb L. Calix[4]pyrrolato Aluminate Catalyzes the Dehydrocoupling of Phenylphosphine Borane to High Molar Weight Polymers. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Florian Schön
- Department of Chemistry University of Victoria Victoria BC, V8P 5C2 Canada
| | - Lukas M. Sigmund
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Friederike Schneider
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Deborah Hartmann
- Department of Chemistry University of Victoria Victoria BC, V8P 5C2 Canada
- Anorganisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Matthew A. Wiebe
- Department of Chemistry University of Victoria Victoria BC, V8P 5C2 Canada
| | - Ian Manners
- Department of Chemistry University of Victoria Victoria BC, V8P 5C2 Canada
| | - Lutz Greb
- Anorganische Chemie, Freie Universität Berlin Fabeckstraße 34–36 14195 Berlin Germany
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10
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Lehnfeld F, Seidl M, Timoshkin AY, Scheer M. Synthesis and Reactivity of a Lewis‐Base‐Stabilized
tert
‐Butyl Arsanylborane: A Versatile Building Block for Arsenic‐Boron Oligomers. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100930] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Felix Lehnfeld
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Germany
| | - Michael Seidl
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Germany
| | - Alexey Y. Timoshkin
- Institute of Chemistry St. Petersburg State University 199034 Universitetskaya emb. 7/9 St. Petersburg Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Germany
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11
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Pomogaeva AV, Timoshkin AY. Stability and Electronic Structure of Donor-Acceptor Stabilized Group 13/15 Oligomers. J Phys Chem A 2021; 125:3415-3424. [PMID: 33861081 DOI: 10.1021/acs.jpca.1c02258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Electronic structures and thermodynamic characteristics of chain inorganic group 13-15 oligomers [H2MEH2]n (M = B, Al, Ga, E = P, As; n = 4-15) are presented. Donor-acceptor interaction with both Lewis acids and Lewis bases effectively stabilizes chain isomers with respect to spontaneous cyclization and significantly changes their electronic structure.
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Affiliation(s)
- Anna V Pomogaeva
- Institute of Chemistry, St. Petersburg State University, Universitetskaya emb. 7/9, St. Petersburg, 199034, Russia
| | - Alexey Y Timoshkin
- Institute of Chemistry, St. Petersburg State University, Universitetskaya emb. 7/9, St. Petersburg, 199034, Russia
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12
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Shaikh AC, Veleta JM, Moutet J, Gianetti TL. Trioxatriangulenium (TOTA +) as a robust carbon-based Lewis acid in frustrated Lewis pair chemistry. Chem Sci 2021; 12:4841-4849. [PMID: 34168760 PMCID: PMC8179643 DOI: 10.1039/d0sc05893a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 02/07/2021] [Indexed: 12/15/2022] Open
Abstract
We report the reactivity between the water stable Lewis acidic trioxatriangulenium ion (TOTA+) and a series of Lewis bases such as phosphines and N-heterocyclic carbene (NHC). The nature of the Lewis acid-base interaction was analyzed via variable temperature (VT) NMR spectroscopy, single-crystal X-ray diffraction, UV-visible spectroscopy, and DFT calculations. While small and strongly nucleophilic phosphines, such as PMe3, led to the formation of a Lewis acid-base adduct, frustrated Lewis pairs (FLPs) were observed for sterically hindered bases such as P( t Bu)3. The TOTA+-P( t Bu)3 FLP was characterized as an encounter complex, and found to promote the heterolytic cleavage of disulfide bonds, formaldehyde fixation, dehydrogenation of 1,4-cyclohexadiene, heterolytic cleavage of the C-Br bonds, and interception of Staudinger reaction intermediates. Moreover, TOTA+ and NHC were found to first undergo single-electron transfer (SET) to form [TOTA]·[NHC]˙+, which was confirmed via electron paramagnetic resonance (EPR) spectroscopy, and subsequently form a [TOTA-NHC]+ adduct or a mixture of products depending the reaction conditions used.
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Affiliation(s)
- Aslam C Shaikh
- University of Arizona, Department of Chemistry and Biochemistry Tucson AZ USA
| | - José M Veleta
- University of Arizona, Department of Chemistry and Biochemistry Tucson AZ USA
| | - Jules Moutet
- University of Arizona, Department of Chemistry and Biochemistry Tucson AZ USA
| | - Thomas L Gianetti
- University of Arizona, Department of Chemistry and Biochemistry Tucson AZ USA
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13
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de Jong GB, Ortega N, Lutz M, Lammertsma K, Slootweg JC. Easy Access to Phosphine-Borane Building Blocks. Chemistry 2020; 26:15944-15952. [PMID: 32602582 PMCID: PMC7756754 DOI: 10.1002/chem.202002367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 06/29/2020] [Indexed: 11/26/2022]
Abstract
In this paper, we highlight the synthesis of a variety of primary phosphine-boranes (RPH2 ⋅BH3 ) from the corresponding dichlorophosphines, simply by using Li[BH4 ] as reductant and provider of the BH3 protecting group. The method offers facile access not only to alkyl- and arylphosphine-boranes, but also to aminophosphine-boranes (R2 NPH2 ⋅BH3 ) that are convenient building blocks but without the protecting BH3 moiety thermally labile and notoriously difficult to handle. The borane-protected primary phosphines can be doubly deprotonated using n-butyllithium to provide soluble phosphanediides Li2 [RP⋅BH3 ] of which the phenyl-derivative Li2 [PhP⋅BH3 ] was structurally characterized in the solid state.
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Affiliation(s)
- G. Bas de Jong
- Van't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamP.O. Box 941571090 GDAmsterdamThe Netherlands
- Faculty of SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Nuria Ortega
- Faculty of SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Martin Lutz
- Crystal and Structural ChemistryBijvoet Centre for Biomolecular ResearchUtrecht UniversityPadualaan 83584UtrechtThe Netherlands
| | - Koop Lammertsma
- Faculty of SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Department of ChemistryOakland Park 2006University of JohannesburgJohannesburg2006South Africa
| | - J. Chris Slootweg
- Van't Hoff Institute for Molecular Sciences (HIMS)University of AmsterdamP.O. Box 941571090 GDAmsterdamThe Netherlands
- Faculty of SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
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14
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Morris LJ, Hill MS, Mahon MF, Manners I, Patrick BO. Alkaline-Earth Derivatives of Diphenylphosphine–Borane. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Louis J. Morris
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Michael S. Hill
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Mary F. Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Ian Manners
- Department of Chemistry, University of Victoria, Victoria, British Columbia V8P 5C2, Canada
| | - Brian O. Patrick
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada
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15
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Morris LJ, Rajabi NA, Hill MS, Manners I, McMullin CL, Mahon MF. Phosphinoborane interception at magnesium by borane-assisted phosphine-borane dehydrogenation. Dalton Trans 2020; 49:14584-14591. [DOI: 10.1039/d0dt03415k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ph2PBH2 is generated and trapped on-metal by addition of B(C6F5)3 to a β-diketiminato magnesium phospidoborane complex, similar reactivity is meanwhile prevented for the analogous calcium-based system by formation of a stable η6-toluene complex.
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Affiliation(s)
| | | | | | - Ian Manners
- Department of Chemistry
- University of Victoria
- Victoria
- Canada
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16
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Jaiswal K, Volodarsky S, Kampel V, Dobrovetsky R. A self-catalyzed reaction of 1,2-dibenzoyl-o-carborane with hydrosilanes - formation of new hydrofuranes. Chem Commun (Camb) 2019; 55:10448-10451. [PMID: 31410423 DOI: 10.1039/c9cc04780h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The activation of Si-H bonds is a very important transformation both in organic and inorganic chemistry. Herein we report that 1,2-dibenzoyl-o-carborane (1) reacts with Si-H bonds, yielding new hydrofurane-type products. The mechanism of this Si-H bond activation was studied both experimentally and by DFT calculations, and supposedly proceeds in an FLP-type manner.
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Affiliation(s)
- Kuldeep Jaiswal
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel.
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17
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Knights AW, Chitnis SS, Manners I. Photolytic, radical-mediated hydrophosphination: a convenient post-polymerisation modification route to P-di(organosubstituted) polyphosphinoboranes [RR'PBH 2] n. Chem Sci 2019; 10:7281-7289. [PMID: 31588298 PMCID: PMC6686642 DOI: 10.1039/c9sc01428d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 06/05/2019] [Indexed: 12/23/2022] Open
Abstract
Polymers with a phosphorus-boron main chain have attracted interest as novel inorganic materials with potentially useful properties since the 1950s. Although examples have recently been shown to be accessible via several routes, the materials reported so far have been limited to P-mono(organosubstituted) materials, [RHPBH2] n , containing P-H groups. Here we report a general route for the post-polymerisation modification of such polyphosphinoboranes giving access to a large range of previously unknown examples featuring P-disubstituted units. Insertion of alkenes, R'CH[double bond, length as m-dash]CH2 into the P-H bonds of poly(phenylphosphinoborane), [PhHPBH2] n was facilitated by irradiation under UV light in the presence of the photoinitiator 2,2-dimethoxy-2-phenylacetophenone (DMPAP) and (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) under benchtop conditions giving high molar mass, air-stable polymers [PhR'PBH2] n with controlled functionalisation and tunable material properties. The mechanistic explanation for the favourable effect of the addition of TEMPO was also investigated and was proposed to be a consequence of reversible binding to radical species formed from the photolysis of DMPAP. This new methodology was also extended to the formation of crosslinked gels and to water-soluble bottlebrush copolymers showcasing applicability to form a wide range of polyphosphinoborane-based soft materials with tunable properties.
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Affiliation(s)
- Alastair W Knights
- School of Chemistry , University of Bristol , Cantock's Close , BS8 1TS , UK
| | - Saurabh S Chitnis
- School of Chemistry , University of Bristol , Cantock's Close , BS8 1TS , UK
- Department of Chemistry , Dalhousie University , Halifax , NS B3H 4R2 , Canada
| | - Ian Manners
- School of Chemistry , University of Bristol , Cantock's Close , BS8 1TS , UK
- Department of Chemistry , University of Victoria , Victoria , BC V8W 2Y2 , Canada .
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18
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Han D, Anke F, Trose M, Beweries T. Recent advances in transition metal catalysed dehydropolymerisation of amine boranes and phosphine boranes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.09.016] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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19
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Hegen O, Virovets AV, Timoshkin AY, Scheer M. The Lewis-Base-Stabilized Diphenyl-Substituted Arsanylborane: A Versatile Building Block for Arsanylborane Oligomers. Chemistry 2018; 24:16521-16525. [DOI: 10.1002/chem.201804341] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Oliver Hegen
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Germany
| | - Alexander V. Virovets
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Germany
- Nikolaev Institute of Inorganic Chemistry; Siberian Division of Russian Academy of Sciences, Acad. Lavrentyev Prosp, 3; 630090 Novosibirsk Russia
- Novosibirsk State University; ul. Pirogova, 3 630090 Novosibirsk Russia
| | - Alexey Y. Timoshkin
- Institute of Chemistry; St. Petersburg State University; 199034 Universitetskaya emb. 7/9 St. Petersburg Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Germany
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20
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Köster M, Kreher A, von Hänisch C. Synthesis of ternary group 13/15 chain compounds. Dalton Trans 2018; 47:7875-7878. [PMID: 29796512 DOI: 10.1039/c8dt01119b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we present the synthesis and characterisation of the seven-membered group 13/15 chain compound HB{N(H)PtBu2BH3}2 (3) obtained from the reaction of tBu2PNH2 (1) with Me2S·BH3. Furthermore, we describe the synthesis of the aluminium and gallium compounds tBu2PN(H)AltBu2N(H)P(H)tBu2 (4) and tBu2(H)PN(H)GatBu3 (5) derived from the reaction of tBu2PNH2 (1) with MtBu3 (M = Al, Ga).
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Affiliation(s)
- Marcel Köster
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043 Marburg, Germany.
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21
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Milovanović MR, Andrić JM, Medaković VB, Djukic JP, Zarić SD. Investigation of interactions in Lewis pairs between phosphines and boranes by analyzing crystal structures from the Cambridge Structural Database. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2018; 74:255-263. [PMID: 29927388 DOI: 10.1107/s2052520618003736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 03/04/2018] [Indexed: 06/08/2023]
Abstract
The interactions between phosphines and boranes in crystal structures have been investigated by analyzing data from the Cambridge Structural Database (CSD). The interactions between phosphines and boranes were classified into three types; two types depend on groups on the boron atom, whereas the third one involves frustrated Lewis pairs (FLPs). The data enabled geometric parameters in structures to be compared with phosphine-borane FLPs with classical Lewis pairs. Most of the crystal structures (78.1%) contain BH3 as the borane group. In these systems, the boron-phosphorus distance is shorter than systems where the boron atom is surrounded by groups other than hydrogen atoms. The analysis of the CSD data has shown that FLPs have a tendency for the longest boron-phosphorus distance among all phosphine-borane pairs, as well as different other geometrical parameters. The results show that most of the frustrated phosphine-borane pairs found in crystal structures are bridged ones. The minority of non-bridged FLP structures contain, beside phosphorus and boron atoms, other heteroatoms (O, N, S for instance).
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Affiliation(s)
- Milan R Milovanović
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, 11000, Serbia
| | - Jelena M Andrić
- Innovation Center, Department of Chemistry, Studentski trg 12-16, Belgrade, 11000, Serbia
| | - Vesna B Medaković
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, 11000, Serbia
| | - Jean Pierre Djukic
- Institut de Chimie de Strasbourg, UMR 7177 CNRS, Université de Strasbourg, 4, rue Blaise Pascal, Strasbourg, 67000, France
| | - Sneǽana D Zarić
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, 11000, Serbia
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22
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Marquardt C, Hegen O, Vogel A, Stauber A, Bodensteiner M, Timoshkin AY, Scheer M. Depolymerization of Poly(phosphinoboranes): From Polymers to Lewis Base Stabilized Monomers. Chemistry 2017; 24:360-363. [PMID: 29166549 DOI: 10.1002/chem.201705510] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Indexed: 01/10/2023]
Abstract
We report on depolymerization reactions of poly(phosphinoboranes). The cleavage of the polymers [H2 PBH2 ]n (2 a), [tBuHPBH2 ]n (2 c), [PhHPBH2 ]n (2 e) and the oligomer [Ph2 PBH2 ]n (2 b), with strong Lewis bases (LBs), in particular with NHCs, leads to the corresponding monomeric phosphanylboranes R1 R2 PBH2 LB. It is observed that the depolymerization depends on the strength and stability of the LBs as well as on the substitution pattern of the poly(phosphinoboranes). The solid state structures of the monomeric phosphinoboranes H2 PBH2 NHCMe (NHC=N-heterocyclic carbene) (4 a), H2 PBH2 NHCdipp (5 a) and tBuHPBH2 NHCMe (4 c) were determined. DFT calculations support the experimentally observed reaction behavior.
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Affiliation(s)
- Christian Marquardt
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Oliver Hegen
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Ariane Vogel
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Andreas Stauber
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Michael Bodensteiner
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Alexey Y Timoshkin
- Institute of Chemistry, St. Petersburg State University, 199034 Universitetskaya emb. 7/9, St. Petersburg, Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
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23
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Wu L, Chitnis SS, Jiao H, Annibale VT, Manners I. Non-Metal-Catalyzed Heterodehydrocoupling of Phosphines and Hydrosilanes: Mechanistic Studies of B(C 6F 5) 3-Mediated Formation of P-Si Bonds. J Am Chem Soc 2017; 139:16780-16790. [PMID: 28991469 DOI: 10.1021/jacs.7b09175] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Non-metal-catalyzed heterodehydrocoupling of primary and secondary phosphines (R1R2PH, R2 = H or R1) with hydrosilanes (R3R4R5SiH, R4, R5 = H or R3) to produce synthetically useful silylphosphines (R1R2P-SiR3R4R5) has been achieved using B(C6F5)3 as the catalyst (10 mol %, 100 °C). Kinetic studies demonstrated that the reaction is first-order in hydrosilane and B(C6F5)3 but zero-order in phosphine. Control experiments, DFT calculations, and DOSY NMR studies suggest that a R1R2HP·B(C6F5)3 adduct is initially formed and undergoes partial dissociation to form an "encounter complex". The latter mediates frustrated Lewis pair type Si-H bond activation of the silane substrates. We also found that B(C6F5)3 catalyzes the homodehydrocoupling of primary phosphines to form cyclic phosphine rings and the first example of a non-metal-catalyzed hydrosilylation of P-P bonds to produce silylphosphines (R1R2P-SiR3R4R5). Moreover, the introduction of PhCN to the reactions involving secondary phosphines with hydrosilanes allowed the heterodehydrocoupling reaction to proceed efficiently under much milder conditions (1.0 mol % B(C6F5)3 at 25 °C). Mechanistic studies, as well as DFT calculations, revealed that PhCN plays a key mechanistic role in facilitating the dehydrocoupling reactions rather than simply functioning as H2-acceptor.
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Affiliation(s)
- Lipeng Wu
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| | - Saurabh S Chitnis
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| | - Haijun Jiao
- Leibniz-Institut für Katalyse e. V. , Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Vincent T Annibale
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| | - Ian Manners
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
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24
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Marquardt C, Kahoun T, Baumann J, Timoshkin AY, Scheer M. Coordination of Boron-centered Lewis Acids by organo
-substituted Phosphanylboranes. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700219] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Christian Marquardt
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Germany
| | - Tobias Kahoun
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Germany
| | - Josef Baumann
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Germany
| | - Alexey Y. Timoshkin
- Institute of Chemistry; St. Petersburg State University; Universitetskaya emb. 7/9 199034 St. Petersburg Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Germany
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25
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Turner JR, Resendiz-Lara DA, Jurca T, Schäfer A, Vance JR, Beckett L, Whittell GR, Musgrave RA, Sparkes HA, Manners I. Synthesis, Characterization, and Properties of Poly(aryl)phosphinoboranes Formed via Iron-Catalyzed Dehydropolymerization. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700120] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joshua R. Turner
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | | | - Titel Jurca
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - André Schäfer
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - James R. Vance
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Laura Beckett
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - George R. Whittell
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Rebecca A. Musgrave
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Hazel A. Sparkes
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Ian Manners
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
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26
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Stauber A, Jurca T, Marquardt C, Fleischmann M, Seidl M, Whittell GR, Manners I, Scheer M. A Convenient Route to Monoalkyl‐Substituted Phosphanylboranes (HRP–BH2–NMe3): Prospective Precursors to Poly[(alkylphosphino)boranes]. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600226] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Andreas Stauber
- Institut für Anorganische ChemieUniversity of Regensburg93040RegensburgGermany
| | - Titel Jurca
- School of ChemistryBristol UniversityCantock's CloseBS8 1TSBristolUK
| | - Christian Marquardt
- Institut für Anorganische ChemieUniversity of Regensburg93040RegensburgGermany
| | - Martin Fleischmann
- Institut für Anorganische ChemieUniversity of Regensburg93040RegensburgGermany
| | - Michael Seidl
- Institut für Anorganische ChemieUniversity of Regensburg93040RegensburgGermany
| | | | - Ian Manners
- School of ChemistryBristol UniversityCantock's CloseBS8 1TSBristolUK
| | - Manfred Scheer
- Institut für Anorganische ChemieUniversity of Regensburg93040RegensburgGermany
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27
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Taylor LJ, Surgenor BA, Wawrzyniak P, Ray MJ, Cordes DB, Slawin AMZ, Kilian P. Spontaneous dehydrocoupling in peri-substituted phosphine-borane adducts. Dalton Trans 2016; 45:1976-86. [PMID: 26314761 DOI: 10.1039/c5dt02539g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bis(borane) adducts Acenap(PiPr2·BH3)(PRH·BH3) (Acenap = acenaphthene-5,6-diyl; 4a, R = Ph; 4b, R = ferrocenyl, Fc; 4c, R = H) were synthesised by the reaction of excess H3B·SMe2 with either phosphino-phosphonium salts [Acenap(PiPr2)(PR)](+)Cl(-) (1a, R = Ph; 1b, R = Fc), or bis(phosphine) Acenap(PiPr2)(PH2) (3). Bis(borane) adducts 4a-c were found to undergo dihydrogen elimination at room temperature, this spontaneous catalyst-free phosphine-borane dehydrocoupling yields BH2 bridged species Acenap(PiPr2)(μ-BH2)(PR·BH3) (5a, R = Ph; 5b, R = Fc; 5c, R = H). Thermolysis of 5c results in loss of the terminal borane moiety to afford Acenap(PiPr2)(μ-BH2)(PH) (14). Single crystal X-ray structures of 3, 4b and 5a-c are reported.
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Affiliation(s)
- Laurence J Taylor
- School of Chemistry, EastCHEM, University of St Andrews, St Andrews, Fife, KY16 9ST, UK.
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28
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Melen RL. Dehydrocoupling routes to element–element bonds catalysed by main group compounds. Chem Soc Rev 2016; 45:775-88. [DOI: 10.1039/c5cs00521c] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This Tutorial Review focuses on recent applications of main group compounds in the catalytic synthesis of heteronuclear element–element bonds within the p-block.
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29
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Fernández-Millán M, Allen LK, García-Rodríguez R, Bond AD, Mosquera MEG, Wright DS. Formation of a unique ‘unsupported’ hydridic stannate(ii). Chem Commun (Camb) 2016; 52:5993-6. [DOI: 10.1039/c6cc01885h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The reaction of the amido-stannate LiSn(NMe2)3 with the phosphine–borane tBu2PHBH3 gives the SnII hydride [(Me2NH)2Li{BH3P(tBu)2}2Sn(H)] (1); the first example of a hydridic stannate(ii) that is not supported by transition metal or ligand bonding.
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Affiliation(s)
| | - Lucy K. Allen
- Chemistry Department
- Cambridge University
- Cambridge CB2 1EW
- UK
| | | | - Andrew D. Bond
- Chemistry Department
- Cambridge University
- Cambridge CB2 1EW
- UK
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30
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Abstract
This Review article deals with the synthesis and properties of inorganic hydrocarbon analogues: binary chemical species that contain heavier Group 14 elements (Si, Ge, Sn or Pb) and hydrogen as components. Rapid advances in our general knowledge of these species have enabled the development of industrially relevant processes such as the hydrosilylation of unsaturated substrates and the chemical vapor deposition of semi-conducting films.
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Affiliation(s)
- Eric Rivard
- Department of Chemistry
- University of Alberta
- Edmonton
- Canada
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31
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Marquardt C, Jurca T, Schwan KC, Stauber A, Virovets AV, Whittell GR, Manners I, Scheer M. Metal-Free Addition/Head-to-Tail Polymerization of Transient Phosphinoboranes, RPH-BH2: A Route to Poly(alkylphosphinoboranes). Angew Chem Int Ed Engl 2015; 54:13782-6. [PMID: 26427911 PMCID: PMC4648028 DOI: 10.1002/anie.201507084] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Indexed: 11/12/2022]
Abstract
Mild thermolysis of Lewis base stabilized phosphinoborane monomers R(1)R(2)P-BH2⋅NMe3 (R(1),R(2)=H, Ph, or tBu/H) at room temperature to 100 °C provides a convenient new route to oligo- and polyphosphinoboranes [R(1)R(2)P-BH2]n. The polymerization appears to proceed via the addition/head-to-tail polymerization of short-lived free phosphinoborane monomers, R(1)R(2)P-BH2. This method offers access to high molar mass materials, as exemplified by poly(tert-butylphosphinoborane), that are currently inaccessible using other routes (e.g. catalytic dehydrocoupling).
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Affiliation(s)
- Christian Marquardt
- Universität Regensburg, Institut für Anorganische Chemie93040 Regensburg (Germany) E-mail:
| | - Titel Jurca
- School of Chemistry, Bristol UniversityCantock's Close, BS8 1TS, Bristol (UK) E-mail:
| | - Karl-Christian Schwan
- Universität Regensburg, Institut für Anorganische Chemie93040 Regensburg (Germany) E-mail:
| | - Andreas Stauber
- Universität Regensburg, Institut für Anorganische Chemie93040 Regensburg (Germany) E-mail:
| | - Alexander V Virovets
- Universität Regensburg, Institut für Anorganische Chemie93040 Regensburg (Germany) E-mail:
| | - George R Whittell
- School of Chemistry, Bristol UniversityCantock's Close, BS8 1TS, Bristol (UK) E-mail:
| | - Ian Manners
- School of Chemistry, Bristol UniversityCantock's Close, BS8 1TS, Bristol (UK) E-mail:
| | - Manfred Scheer
- Universität Regensburg, Institut für Anorganische Chemie93040 Regensburg (Germany) E-mail:
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32
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Marquardt C, Jurca T, Schwan KC, Stauber A, Virovets AV, Whittell GR, Manners I, Scheer M. Metallfreie Additions-/Kopf-Schwanz-Polymerisation von intermediär gebildeten Phosphanylboranen, RPH-BH2: ein Weg zu Poly(alkylphosphanylboranen). Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507084] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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33
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Molecular complexes of group 13 element trihalides, pentafluorophenyl derivatives and Lewis superacids. Coord Chem Rev 2015. [DOI: 10.1016/j.ccr.2015.02.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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34
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Abstract
This Perspective article summarizes recent progress from our laboratory in the isolation of reactive main group species using a general donor-acceptor protocol. A highlight of this program is the use of carbon-based donors in combination with suitable Lewis acidic acceptors to yield stable complexes of parent Group 14 element hydrides (e.g. GeH2 and H2SiGeH2). It is anticipated that this strategy could be extended to include new synthetic targets from throughout the Periodic Table with possible applications in bottom-up materials synthesis and main group element catalysis envisioned.
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Affiliation(s)
- Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr, Edmonton, AB, CanadaT6G 2G2.
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35
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Schäfer A, Jurca T, Turner J, Vance JR, Lee K, Du VA, Haddow MF, Whittell GR, Manners I. Iron-Catalyzed Dehydropolymerization: A Convenient Route to Poly(phosphinoboranes) with Molecular-Weight Control. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411957] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Schäfer A, Jurca T, Turner J, Vance JR, Lee K, Du VA, Haddow MF, Whittell GR, Manners I. Iron-catalyzed dehydropolymerization: a convenient route to poly(phosphinoboranes) with molecular-weight control. Angew Chem Int Ed Engl 2015; 54:4836-41. [PMID: 25712707 DOI: 10.1002/anie.201411957] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 01/29/2015] [Indexed: 01/21/2023]
Abstract
The catalyst loading is the key to control the molecular weight of the polymer in the iron-catalyzed dehydropolymerization of phosphine-borane adducts. Studies showed that the reaction proceeds through a chain-growth coordination-insertion mechanism.
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Affiliation(s)
- André Schäfer
- School of Chemistry, Bristol University, Cantock's Close, BS8 1TS, Bristol (UK); Current adress: Saarland University, Department 8.1-Chemistry, 66123 Saarbrücken (Germany)
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37
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38
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Roy L, Bhunya S, Paul A. A Metal-Free Strategy to Release Chemisorbed H2from Hydrogenated Boron Nitride Nanotubes. Angew Chem Int Ed Engl 2014; 53:12430-5. [DOI: 10.1002/anie.201403610] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 06/27/2014] [Indexed: 11/10/2022]
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39
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Roy L, Bhunya S, Paul A. A Metal-Free Strategy to Release Chemisorbed H2from Hydrogenated Boron Nitride Nanotubes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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40
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Anaby A, Butschke B, Ben-David Y, Shimon LJW, Leitus G, Feller M, Milstein D. B–H Bond Cleavage via Metal–Ligand Cooperation by Dearomatized Ruthenium Pincer Complexes. Organometallics 2014. [DOI: 10.1021/om500311a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Aviel Anaby
- Department of Organic
Chemistry and ‡Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Burkhard Butschke
- Department of Organic
Chemistry and ‡Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Yehoshoa Ben-David
- Department of Organic
Chemistry and ‡Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Linda J. W. Shimon
- Department of Organic
Chemistry and ‡Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Gregory Leitus
- Department of Organic
Chemistry and ‡Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - Moran Feller
- Department of Organic
Chemistry and ‡Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 76100, Israel
| | - David Milstein
- Department of Organic
Chemistry and ‡Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 76100, Israel
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41
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Chen C, Harhausen M, Liedtke R, Bussmann K, Fukazawa A, Yamaguchi S, Petersen JL, Daniliuc CG, Fröhlich R, Kehr G, Erker G. Dibenzopentalenes from B(C6F5)3-Induced Cyclization Reactions of 1,2-Bis(phenylethynyl)benzenes. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300871] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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42
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Chen C, Harhausen M, Liedtke R, Bussmann K, Fukazawa A, Yamaguchi S, Petersen JL, Daniliuc CG, Fröhlich R, Kehr G, Erker G. Dibenzopentalenes from B(C6F5)3-Induced Cyclization Reactions of 1,2-Bis(phenylethynyl)benzenes. Angew Chem Int Ed Engl 2013; 52:5992-6. [DOI: 10.1002/anie.201300871] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 03/20/2013] [Indexed: 11/08/2022]
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43
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Gas phase Lewis acidity and basicity scales for boranes, phosphines and amines based on the formation of donor–acceptor complexes. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.02.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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44
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Thoms C, Marquardt C, Timoshkin AY, Bodensteiner M, Scheer M. Die Oligomerisierung von Phosphanylboran durch Titankomplexe. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209703] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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Thoms C, Marquardt C, Timoshkin AY, Bodensteiner M, Scheer M. The oligomerization of phosphinoborane by titanium complexes. Angew Chem Int Ed Engl 2013; 52:5150-4. [PMID: 23576333 DOI: 10.1002/anie.201209703] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 01/22/2013] [Indexed: 11/05/2022]
Affiliation(s)
- Christine Thoms
- Institut für Anorganische Chemie, Universität Regensburg, 93040 Regensburg, Germany
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46
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Laury ML, Wilson AK. Examining the heavyp-block with a pseudopotential-based composite method: Atomic and molecular applications of rp-ccCA. J Chem Phys 2012; 137:214111. [DOI: 10.1063/1.4768420] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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Mohajeri A, Ebadi M. Nano structures of group 13-15 mixed heptamer clusters: a computational study. J Phys Chem A 2012; 116:4678-86. [PMID: 22506489 DOI: 10.1021/jp302323x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The structural and thermodynamic characteristics of lowest-energy structures of group 13-15 mixed heptamers in two distinct series [(HM)(k)(HM')(l)(NH)(7)] (M, M' = B, Al, Ga and k + l = 7) and [(HGa)(7)(YH)(m)(Y'H)(n)] (Y,Y' = N, P, As and m + n = 7) have been systematically investigated using the density functional approach. Our main goal is to get knowledge of the preferential bonding patterns of the first three rows of group 13-15 elements for the construction of mixed heptameric clusters. Structural parameters, thermodynamic properties of oligomerization reaction, band gaps, and dipole moments of the 18 lowest-energy structures of the studied heptamers in each series are compared to their corresponding binary parents, that is, [(HM)(7)(NH)(7)] and [(HGa)(7)(YH)(7)]. The stability of different isomer structures is discussed to reveal the competitiveness of group 13 and 15 bonding. Mixed heptamers are predicted to be thermodynamically more stable compared to a mixture of monomers. However, the favorability for the generation of mixed heptamers strongly depends on the nature of inserted metal and nonmetal pairs of group 13-15. Moreover, it is found that among all studied heptamers the smaller band gaps correspond to arsenic containing species which are close to the semiconducting regime, around 4.62-4.98 eV.
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Affiliation(s)
- Afshan Mohajeri
- Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran.
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48
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Hathwar VR, Paul AK, Natarajan S, Guru Row TN. Charge Density Analysis of a Pentaborate Ion in an Ammonium Borate: Toward the Understanding of Topological Features in Borate Minerals. J Phys Chem A 2011; 115:12818-25. [DOI: 10.1021/jp203983v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Venkatesha R. Hathwar
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
| | - Avijit Kumar Paul
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
| | - Srinivasan Natarajan
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
| | - Tayur N. Guru Row
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
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49
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Tanur CA, Stephan DW. The Thioether–Methyleneborane (PhSCH2B(C6F5)2)2: Synthesis and Reactivity with Donors and Alkynes. Organometallics 2011. [DOI: 10.1021/om200336t] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Cheryl A. Tanur
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada, M5S 3H6
| | - Douglas W. Stephan
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada, M5S 3H6
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50
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Staubitz A, Sloan ME, Robertson APM, Friedrich A, Schneider S, Gates PJ, Schmedt auf der Günne J, Manners I. Catalytic Dehydrocoupling/Dehydrogenation ofN-Methylamine-Borane and Ammonia-Borane: Synthesis and Characterization of High Molecular Weight Polyaminoboranes. J Am Chem Soc 2010; 132:13332-45. [DOI: 10.1021/ja104607y] [Citation(s) in RCA: 261] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anne Staubitz
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K., Technische Universität München, Department Chemie, Lichtenbergstraβe 4, D-85747 Garching, Germany, and Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Matthew E. Sloan
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K., Technische Universität München, Department Chemie, Lichtenbergstraβe 4, D-85747 Garching, Germany, and Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Alasdair P. M. Robertson
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K., Technische Universität München, Department Chemie, Lichtenbergstraβe 4, D-85747 Garching, Germany, and Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Anja Friedrich
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K., Technische Universität München, Department Chemie, Lichtenbergstraβe 4, D-85747 Garching, Germany, and Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Sven Schneider
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K., Technische Universität München, Department Chemie, Lichtenbergstraβe 4, D-85747 Garching, Germany, and Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Paul J. Gates
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K., Technische Universität München, Department Chemie, Lichtenbergstraβe 4, D-85747 Garching, Germany, and Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Jörn Schmedt auf der Günne
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K., Technische Universität München, Department Chemie, Lichtenbergstraβe 4, D-85747 Garching, Germany, and Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, D-81377 Munich, Germany
| | - Ian Manners
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS, U.K., Technische Universität München, Department Chemie, Lichtenbergstraβe 4, D-85747 Garching, Germany, and Department of Chemistry, Ludwig-Maximilians-Universität, Butenandtstr. 5-13, D-81377 Munich, Germany
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