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Ackermann MT, Szlosek R, Riesinger C, Seidl M, Timoshkin AY, Rivard E, Scheer M. NHC-Stabilized Mixed Group 13/14/15 Element Hydrides. Chemistry 2024; 30:e202303680. [PMID: 38009601 DOI: 10.1002/chem.202303680] [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: 11/06/2023] [Revised: 11/25/2023] [Accepted: 11/27/2023] [Indexed: 11/29/2023]
Abstract
The syntheses of novel N-heterocyclic carbene (NHC) adducts of group 13, 14 and 15 element hydrides are reported. Salt metathesis reactions between NaPH2 and IDipp ⋅ GeH2 BH2 OTf (1) (IDipp=1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) led to mixtures of the two isomers IDipp ⋅ GeH2 BH2 PH2 (2 a) and IDipp ⋅ BH2 GeH2 PH2 (2 b); by altering the reaction conditions an almost exclusive formation of 2 b was achieved. Attempts to purify mixtures of 2 a and 2 b by re-crystallization from THF afforded a salt [IDipp ⋅ GeH2 BH2 ⋅ IDipp][PHGeH2 BH2 PH2 BH2 GeH2 ] (4) that contains the novel anionic cyclohexyl-like inorganic heterocycle [PHGeH2 BH2 PH2 BH2 GeH2 ]- . In addition, the borane adducts IDipp ⋅ GeH2 BH2 PH2 BH3 (3 a) and IDipp ⋅ BH2 GeH2 PH2 BH3 (3 b) as even longer chain compounds were obtained from reactions of 2 a/2 b with H3 B ⋅ SMe2 and were studied by NMR spectroscopy. Accompanying DFT computations give insight into the mechanism and energetics associated with 2 a/2 b isomerization as well as their decomposition pathways.
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Affiliation(s)
- Matthias T Ackermann
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Robert Szlosek
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Christoph Riesinger
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Michael Seidl
- Institute of General and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Alexey Y Timoshkin
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya emb. 7/9, 199034, St Petersburg, Russia
| | - Eric Rivard
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr, Edmonton, Alberta, T6G 2G2, Canada
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
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2
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Belousova AM, Timoshkin AY. Structures and Stability of Mixed Main Group Hydrides [PBEH 6] n (E = C, Si, Ge; n = 1-4) and Donor-Acceptor Stabilization of Monomeric Chain Isomers. J Phys Chem A 2023; 127:7353-7363. [PMID: 37615426 DOI: 10.1021/acs.jpca.3c04179] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Structures and stability of mixed group 13-14-15 element hydrides PBEH6 (E = C, Si, Ge), their oligomers, and complexes with Lewis acids and Lewis base are computationally studied at the B3LYP-D3/def2-TZVP level of theory. Unsubstituted chain hydrides are unstable and are expected to form cyclic oligomers. Cyclization can be prevented by the donor-acceptor complex formation. For complexes of chain hydrides with Lewis acid in many cases additional reactivity beyond the donor-acceptor complex formation is observed: cyclization and migration of terminal group from the group 13 Lewis acid to the boron or group 14 terminal atoms of the hydride. The most promising compounds for the experimental studies have been identified. Joint stabilization by both W(CO)5 and trimethylamine provides a synergetic effect, allowing stabilization of 13-14-15 chain compounds.
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Affiliation(s)
- Anna M Belousova
- Institute of Chemistry, St. Petersburg State University, Universitetskaya emb. 7/9, 199034, St. Petersburg, Russia
| | - Alexey Y Timoshkin
- Institute of Chemistry, St. Petersburg State University, Universitetskaya emb. 7/9, 199034, St. Petersburg, Russia
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Dollberg K, Schneider S, Richter RM, Dunaj T, von Hänisch C. Synthesis and Application of Alkali Metal Antimonide-A New Approach to Antimony Chemistry. Angew Chem Int Ed Engl 2022; 61:e202213098. [PMID: 36301563 PMCID: PMC10099276 DOI: 10.1002/anie.202213098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Indexed: 11/06/2022]
Abstract
Alkali metal dihydrogen-antimonides [M(L)x SbH2 ], short: alkali metal antimonides (M=Li, Na, K, Rb, Cs; 1: L=pmdta; 2: L=crown-ether), were prepared from stibine and n-Butyllithium, M(hmds) (hmds=hexamethyldisilazane) or MOtBu, respectively. We developed a generally applicable synthesis route for these compounds and the obtained compounds were examined on their stability depending on the alkali metal and stabilizing additives used, whereby the use of appropriate crown-ethers allowed their isolation and characterization at room temperature. Moreover, the 1,4-dioxane adduct [Na(dioxane)x SbH2 ] was the appropriate starting compound for the synthesis of the first primary silylstibane (Me3 Si)3 SiSbH2 (3) which was characterized by NMR and IR spectroscopy. Reaction of 3 with (Dipp2 NacNac)Ga (Dipp2 NacNac=HC{C(Me)N(Dipp)}2 ; Dipp=2,6-iPr2 C6 H3 ) resulted in the formation of (Dipp2 NacNac)GaH(SbHSi(SiMe3 )3 ) (4) which was furthermore characterized by single crystal x-ray diffraction.
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Affiliation(s)
- Kevin Dollberg
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Selina Schneider
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Roman-Malte Richter
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Tobias Dunaj
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Carsten von Hänisch
- Fachbereich Chemie and Wissenschaftliches Zentrum für Materialwissenschaften (WZMW), Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
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4
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Helling C, Wölper C, Cutsail GE, Haberhauer G, Schulz S. A Mechanistic Study on Reactions of Group 13 Diyls LM with Cp*SbX 2 : From Stibanyl Radicals to Antimony Hydrides. Chemistry 2020; 26:13390-13399. [PMID: 32428370 PMCID: PMC7693246 DOI: 10.1002/chem.202001739] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Indexed: 01/17/2023]
Abstract
Oxidative addition of Cp*SbX2 (X=Cl, Br, I; Cp*=C5Me5) to group 13 diyls LM (M=Al, Ga, In; L=HC[C(Me)N (Dip)]2, Dip=2,6‐iPr2C6H3) yields elemental antimony (M=Al) or the corresponding stibanylgallanes [L(X)Ga]Sb(X)Cp* (X=Br 1, I 2) and ‐indanes [L(X)In]Sb(X)Cp* (X=Cl 5, Br 6, I 7). 1 and 2 react with a second equivalent of LGa to eliminate decamethyl‐1,1’‐dihydrofulvalene (Cp*2) and form stibanyl radicals [L(X)Ga]2Sb. (X=Br 3, I 4), whereas analogous reactions of 5 and 6 with LIn selectively yield stibanes [L(X)In]2SbH (X=Cl 8, Br 9) by elimination of 1,2,3,4‐tetramethylfulvene. The reactions are proposed to proceed via formation of [L(X)M]2SbCp* as reaction intermediate, which is supported by the isolation of [L(Cl)Ga]2SbCp (11, Cp=C5H5). The reaction mechanism was further studied by computational calculations using two different models. The energy values for the Ga‐ and the In‐substituted model systems showing methyl groups instead of the very bulky Dip units are very similar, and in both cases the same products are expected. Homolytic Sb−C bond cleavage yields van der Waals complexes from the as‐formed radicals ([L(Cl)M]2Sb. and Cp*.), which can be stabilized by hydrogen atom abstraction to give the corresponding hydrides, whereas the direct formation of Sb hydrides starting from [L(Cl)M]2SbCp* via concerted β‐H elimination is unlikely. The consideration of the bulky Dip units reveals that the amount of the steric overload in the intermediate I determines the product formation (radical vs. hydride).
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Affiliation(s)
- Christoph Helling
- Institute for Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (Cenide), University of Duisburg-Essen, Universitätsstraße 5-7, 45117, Essen, Germany
| | - Christoph Wölper
- Institute for Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (Cenide), University of Duisburg-Essen, Universitätsstraße 5-7, 45117, Essen, Germany
| | - George E Cutsail
- Max Planck Institute for Chemical Energy Conversion (CEC), Stiftstrasse 34-36/, 45470, Mülheim an der Ruhr, Germany
| | - Gebhard Haberhauer
- Institute of Organic Chemistry, University of Duisburg-Essen, Universitätsstraße 5-7, 45117, Essen, Germany
| | - Stephan Schulz
- Institute for Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (Cenide), University of Duisburg-Essen, Universitätsstraße 5-7, 45117, Essen, Germany
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Weinhart MAK, Lisovenko AS, Timoshkin AY, Scheer M. Nur durch eine Lewis‐Base stabilisierte Phosphanylalane und ‐gallane. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914046] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Anna S. Lisovenko
- Institut für Chemie Staatliche Universität St. Petersburg Universitetskaya emb. 7/9 199034 St. Petersburg Russland
| | - Alexey Y. Timoshkin
- Institut für Chemie Staatliche Universität St. Petersburg Universitetskaya emb. 7/9 199034 St. Petersburg Russland
| | - Manfred Scheer
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
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Weinhart MAK, Lisovenko AS, Timoshkin AY, Scheer M. Phosphanylalanes and Phosphanylgallanes Stabilized only by a Lewis Base. Angew Chem Int Ed Engl 2020; 59:5541-5545. [PMID: 31815355 PMCID: PMC7155101 DOI: 10.1002/anie.201914046] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Indexed: 11/23/2022]
Abstract
The synthesis and characterization of the first parent phosphanylalane and phosphanylgallane stabilized only by a Lewis base (LB) are reported. The corresponding substituted compounds, such as IDipp⋅GaH2 PCy2 (1) (IDipp=1,3-bis(2,6-diisopropylphenyl)-imidazolin-2-ylidene) were obtained by the reaction of LiPCy2 with IDipp⋅GaH2 Cl. However, the LB-stabilized parent compounds IDipp⋅GaH2 PH2 (3) and IDipp⋅AlH2 PH2 (4) were prepared via a salt metathesis of LiPH2 ⋅DME with IDipp⋅E'H2 Cl (E'=Ga, Al) or by H2 -elimination reactions of IDipp⋅E'H3 (E'=Ga, Al) and PH3 , respectively. The compounds could be isolated as crystalline solids and completely characterized. Supporting DFT computations gave insight into the reaction pathways as well as into the stability of these compounds with respect to their decomposition behavior.
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Affiliation(s)
| | - Anna S. Lisovenko
- Institute of ChemistrySaint Petersburg State UniversityUniversitetskaya emb. 7/9199034St. PetersburgRussia
| | - Alexey Y. Timoshkin
- Institute of ChemistrySaint Petersburg State UniversityUniversitetskaya emb. 7/9199034St. PetersburgRussia
| | - Manfred Scheer
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
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7
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Li B, Bauer S, Seidl M, Timoshkin AY, Scheer M. Monomeric β-Diketiminato Group 13 Metal Dipnictogenide Complexes with Two Terminal EH 2 Groups (E=P, As). Chemistry 2019; 25:13714-13718. [PMID: 31456252 PMCID: PMC6899646 DOI: 10.1002/chem.201903887] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Indexed: 11/15/2022]
Abstract
The pnictogenyl Group 13 compounds (Dipp2 Nacnac)M[E(SiMe3 )2 ]Cl and (Dipp2 Nacnac)M(EH2 )2 (Dipp2 Nacnac=HC[C(Me)N(Ar)]2 , Ar: Dipp=2,6-iPr2 C6 H3 ; M=Al, Ga, In; E=P, As) were successfully synthesized. The salt metathesis between (Dipp2 Nacnac)MCl2 and LiE(SiMe3 )2 only led to monosubstituted compounds (Dipp2 Nacnac)M[E(SiMe3 )2 ]Cl [E=P, M=Ga(1), In (2); E=As, M=Ga (3), In (4)], regardless of the stoichiometric ratios used. In contrast to the steric effect of the SiMe3 groups in 1-4, the reactions of the corresponding halides with LiPH2 ⋅DME (or KAsH2 ) facilely yielded the dipnictogenide compounds (Dipp2 Nacnac)M(EH2 )2 (E=P, M=Al (5), Ga (6), In (7); E=As, M=Al (8), Ga (9)), avoiding the use of flammable and toxic PH3 and AsH3 for their synthesis. The compounds 5-9 are the first examples of monomeric Group 13 diphosphanides and diarsanides in which the metal center is bound to two terminal PH2 and AsH2 groups, respectively. In contrast to the successful synthesis of the indium diphosphanide (Dipp2 Nacnac)In(PH2 )2 , the reaction of (Dipp2 Nacnac)InCl2 with KAsH2 led to an indium mirror due to the instability of the target product.
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Affiliation(s)
- Bin Li
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Susanne Bauer
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Michael Seidl
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Alexey Y. Timoshkin
- Institute of ChemistrySt. Petersburg State UniversityUniversitetskaya emb. 7/9199037St. PetersburgRussia
| | - Manfred Scheer
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
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8
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Marczenko KM, Zurakowski JA, Bamford KL, MacMillan JWM, Chitnis SS. Hydrostibination. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911842] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Joseph A. Zurakowski
- Chemistry DepartmentDalhousie University 6274 Coburg Road Halifax Nova Scotia Canada
| | - Karlee L. Bamford
- Department of ChemistryUniversity of Toronto 80 St. George Street Toronto Ontario Canada
| | | | - Saurabh S. Chitnis
- Chemistry DepartmentDalhousie University 6274 Coburg Road Halifax Nova Scotia Canada
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9
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Marczenko KM, Zurakowski JA, Bamford KL, MacMillan JWM, Chitnis SS. Hydrostibination. Angew Chem Int Ed Engl 2019; 58:18096-18101. [PMID: 31591801 DOI: 10.1002/anie.201911842] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Indexed: 11/10/2022]
Abstract
A rigid naphthalenediamine framework has been used to prepare antimony hydrides that feature LUMO shapes and energies similar to those found in secondary boranes. By exploiting this feature, we introduce the first examples of uncatalyzed hydrostibination reactions of robust C≡C, C=C, C=O, and N=N bonds as new elementary hydrometalation reactions analogous to hydroboration. These results endorse the notion of a diagonal relationship between the lightest p-block element and the heaviest Group 15 elements and may lead to the conception of novel reaction chemistry.
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Affiliation(s)
- Katherine M Marczenko
- Chemistry Department, Dalhousie University, 6274 Coburg Road, Halifax, Nova Scotia, Canada
| | - Joseph A Zurakowski
- Chemistry Department, Dalhousie University, 6274 Coburg Road, Halifax, Nova Scotia, Canada
| | - Karlee L Bamford
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada
| | - Joshua W M MacMillan
- Chemistry Department, Dalhousie University, 6274 Coburg Road, Halifax, Nova Scotia, Canada
| | - Saurabh S Chitnis
- Chemistry Department, Dalhousie University, 6274 Coburg Road, Halifax, Nova Scotia, Canada
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10
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Braese J, Schinabeck A, Bodensteiner M, Yersin H, Timoshkin AY, Scheer M. Gold(I) Complexes Containing Phosphanyl- and Arsanylborane Ligands. Chemistry 2018; 24:10073-10077. [PMID: 29845655 DOI: 10.1002/chem.201802682] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Indexed: 01/24/2023]
Abstract
The structural and photophysical properties of a series of new AuI compounds have been studied. The reactions of AuCl(tht) with the phosphanyl- and arsanylboranes RR' EBH2 NMe3 (E=P, As; R=H, Ph; R'=H, Ph, tBu) afford the complexes [AuCl(RR' EBH2 NMe3 )]. In the solid state, [AuCl(H2 PBH2 NMe3 )]2 (2 a) is a dimer showing unsupported intermolecular aurophilic interactions with short Au⋅⋅⋅Au distances. In contrast, [AuCl(H2 AsBH2 NMe3 )]n (2 b) aggregates to form 1D chains. Organic substituents on the pnictogen atoms lead to discrete molecules in [AuCl(RR' PBH2 NMe3 )] (2 c: R=H, R'=tBu; 2 d: R=R'=Ph). To increase the aurophilicity, the ionic homoleptic complexes [Au(RR' EBH2 NMe3 )2 ][AlCl4 ] (3 a-d) have been synthesized, for which 3 a,b form chains in the solid state and exhibit luminescence. The emissions show a drastic redshift with temperature decrease, correlating with decreasing Au⋅⋅⋅Au distances. DFT calculations provide insight into the bonding situation of the products.
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Affiliation(s)
- Jens Braese
- Universität Regensburg, Institut für Anorganische Chemie, 94053, Regensburg, Germany
| | - Alexander Schinabeck
- Universität Regensburg, Institut für Physikalische Chemie, 93053, Regensburg, Germany
| | - Michael Bodensteiner
- Universität Regensburg, Institut für Anorganische Chemie, 94053, Regensburg, Germany
| | - Hartmut Yersin
- Universität Regensburg, Institut für Physikalische Chemie, 93053, Regensburg, Germany
| | - Alexey Y Timoshkin
- St. Petersburg State University, Institute of Chemistry, Universitetskaya nab. 7/9, 199034, St. Petersburg, Russia
| | - Manfred Scheer
- Universität Regensburg, Institut für Anorganische Chemie, 94053, Regensburg, Germany
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11
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Rookes TM, Wildman EP, Balázs G, Gardner BM, Wooles AJ, Gregson M, Tuna F, Scheer M, Liddle ST. Actinide-Pnictide (An-Pn) Bonds Spanning Non-Metal, Metalloid, and Metal Combinations (An=U, Th; Pn=P, As, Sb, Bi). Angew Chem Int Ed Engl 2018; 57:1332-1336. [PMID: 29232498 PMCID: PMC5814731 DOI: 10.1002/anie.201711824] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Indexed: 12/03/2022]
Abstract
The synthesis and characterisation is presented of the compounds [An(TrenDMBS ){Pn(SiMe3 )2 }] and [An(TrenTIPS ){Pn(SiMe3 )2 }] [TrenDMBS =N(CH2 CH2 NSiMe2 But )3 , An=U, Pn=P, As, Sb, Bi; An=Th, Pn=P, As; TrenTIPS =N(CH2 CH2 NSiPri3 )3 , An=U, Pn=P, As, Sb; An=Th, Pn=P, As, Sb]. The U-Sb and Th-Sb moieties are unprecedented examples of any kind of An-Sb molecular bond, and the U-Bi bond is the first two-centre-two-electron (2c-2e) one. The Th-Bi combination was too unstable to isolate, underscoring the fragility of these linkages. However, the U-Bi complex is the heaviest 2c-2e pairing of two elements involving an actinide on a macroscopic scale under ambient conditions, and this is exceeded only by An-An pairings prepared under cryogenic matrix isolation conditions. Thermolysis and photolysis experiments suggest that the U-Pn bonds degrade by homolytic bond cleavage, whereas the more redox-robust thorium compounds engage in an acid-base/dehydrocoupling route.
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Affiliation(s)
- Thomas M. Rookes
- School of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | | | - Gábor Balázs
- Institute of Inorganic ChemistryUniversity of RegensburgUniversitätsstr.3193053RegensburgGermany
| | - Benedict M. Gardner
- School of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Ashley J. Wooles
- School of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Matthew Gregson
- School of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Floriana Tuna
- School of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUK
| | - Manfred Scheer
- Institute of Inorganic ChemistryUniversity of RegensburgUniversitätsstr.3193053RegensburgGermany
| | - Stephen T. Liddle
- School of ChemistryThe University of ManchesterOxford RoadManchesterM13 9PLUK
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12
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Rookes TM, Wildman EP, Balázs G, Gardner BM, Wooles AJ, Gregson M, Tuna F, Scheer M, Liddle ST. Actinide-Pnictide (An−Pn) Bonds Spanning Non-Metal, Metalloid, and Metal Combinations (An=U, Th; Pn=P, As, Sb, Bi). Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711824] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thomas M. Rookes
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Elizabeth P. Wildman
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Gábor Balázs
- Institute of Inorganic Chemistry; University of Regensburg; Universitätsstr.31 93053 Regensburg Germany
| | - Benedict M. Gardner
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Ashley J. Wooles
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Matthew Gregson
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Floriana Tuna
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
| | - Manfred Scheer
- Institute of Inorganic Chemistry; University of Regensburg; Universitätsstr.31 93053 Regensburg Germany
| | - Stephen T. Liddle
- School of Chemistry; The University of Manchester; Oxford Road Manchester M13 9PL UK
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13
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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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Hegen O, Marquardt C, Timoshkin AY, Scheer M. A Convenient Route to Mixed Pnictogenylboranes. Angew Chem Int Ed Engl 2017; 56:12783-12787. [DOI: 10.1002/anie.201707436] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Indexed: 01/21/2023]
Affiliation(s)
- Oliver Hegen
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Germany
| | - Christian Marquardt
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Germany
| | - Alexey Y. Timoshkin
- Institute of Chemistry St. Petersburg State University Universitetskaya nab. 7/9 199034 St. Petersburg Russia
| | - Manfred Scheer
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Germany
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15
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Hegen O, Marquardt C, Timoshkin AY, Scheer M. Ein Weg zu gemischten Pnictogenylboranen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201707436] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Oliver Hegen
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Deutschland
| | - Christian Marquardt
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Deutschland
| | - Alexey Y. Timoshkin
- Institute of Chemistry St. Petersburg State University Universitetskaya nab. 7/9 199034 St. Petersburg Russland
| | - Manfred Scheer
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Deutschland
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