1
|
Schneider JS, Helten H. Hybrid materials comprising ferrocene and diaminoborane moieties: linear concatenation versus macrocyclization. Chem Commun (Camb) 2024. [PMID: 39228359 DOI: 10.1039/d4cc03813d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Combination of borane and diaminoferrocene monomers by Si/B exchange condensation reactions afforded either diazabora-[3]ferrocenophanes or, via stepwise processes, larger macrocycles and a series of linear oligomers. Additional incorporation of p-phenylene moieties in the backbone yielded alternating concatenation.
Collapse
Affiliation(s)
- Johannes S Schneider
- Julius-Maximilians-Universität Würzburg, Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Am Hubland, 97074 Würzburg, Germany.
| | - Holger Helten
- Julius-Maximilians-Universität Würzburg, Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Am Hubland, 97074 Würzburg, Germany.
| |
Collapse
|
2
|
Nasemann S, Franz R, Kargin D, Bruhn C, Kelemen Z, Gutmann T, Pietschnig R. At the limits of bisphosphonio-substituted stannylenes. Chem Asian J 2024; 19:e202300950. [PMID: 38091243 DOI: 10.1002/asia.202300950] [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: 10/30/2023] [Revised: 12/13/2023] [Indexed: 12/29/2023]
Abstract
Donor stabilization of Sn(II) and Pb(II) halides with 1,1'-ferrocenylene bridged bisphosphanes has been explored for Fe(C5H4P(C6H5)2)2 (dppf), and Fe(C5H4PH(C4H9))2. These bisphosphanes are reacted with SnBr2 and PbCl2 with and without additional Lewis acid (AlCl3) forming acyclic and cyclic donor adducts from which the latter represent bisphosphoniotetrylenes. Since dynamic exchange in solution is observed, characterization includes solution and solid-state NMR in addition to SC-XRD, amended by DFT calculations.
Collapse
Affiliation(s)
- Sina Nasemann
- Department of Chemistry, University of Kassel, Heinrich-Plett-Str. 40, 34132, Kassel, Germany
| | - Roman Franz
- Department of Chemistry, University of Kassel, Heinrich-Plett-Str. 40, 34132, Kassel, Germany
| | - Denis Kargin
- Department of Chemistry, University of Kassel, Heinrich-Plett-Str. 40, 34132, Kassel, Germany
| | - Clemens Bruhn
- Department of Chemistry, University of Kassel, Heinrich-Plett-Str. 40, 34132, Kassel, Germany
| | - Zsolt Kelemen
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem Rkp. 3, H-1111, Budapest, Hungary
| | - Torsten Gutmann
- Eduard Zintl Institute for Inorganic and Physical Chemistry, Technical University of Darmstadt, Peter-Grünberg-Straße 8, 64287, Darmstadt, Germany
| | - Rudolf Pietschnig
- Department of Chemistry, University of Kassel, Heinrich-Plett-Str. 40, 34132, Kassel, Germany
| |
Collapse
|
3
|
Ma T, Dong J, Yang DT. Heteroatom-boron-heteroatom-doped π-conjugated systems: structures, synthesis and photofunctional properties. Chem Commun (Camb) 2023; 59:13679-13689. [PMID: 37901914 DOI: 10.1039/d3cc04302a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
The potency of heteroatom-doping in reshaping optoelectronic properties arises from the distinct electronegativity variations between heteroatoms and carbon atoms. By incorporating two heteroatoms with differing electronegativities (e.g., B = N), not only is the architectural coherence of π-conjugated systems retained, but also dipolar traits are introduced, accompanied by unique intermolecular interactions absent in their all-carbon analogs. Another burgeoning doping strategy, featuring the heteroatom-boron-heteroatom motif (X-B-X, where X = N, O), has captured growing attention. This configuration's coexistence of the boron-heteroatom unit and an isolated heteroatom stimulates mutual modulation in the dipole of the boron-heteroatom unit and the heteroatom's electronegativity. In this Feature article, we present an encompassing survey of XBX-doped π-conjugated systems, elucidating how the integration of the X-B-X unit induces transformative structural and property changes within π-conjugated systems.
Collapse
Affiliation(s)
- Tinghao Ma
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, 710072 Xi'an, Shaanxi, China.
| | - Jiaqi Dong
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, 710072 Xi'an, Shaanxi, China.
| | - Deng-Tao Yang
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, 710072 Xi'an, Shaanxi, China.
- Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, 430056 Wuhan, China
| |
Collapse
|
4
|
Franz R, Szathmári B, Bruhn C, Kelemen Z, Pietschnig R. Gradual Donor Stabilization of a Transient Ferrocene Bridged Bisphosphanyl Phosphenium Cation. Inorg Chem 2023; 62:4341-4350. [PMID: 36827512 PMCID: PMC10015459 DOI: 10.1021/acs.inorgchem.3c00100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
A transient phosphenium cation embedded into a [3]ferrocenophane scaffold was formed via chloride abstraction. The cation has been trapped with phosphane, carbene, and silylene donors resulting in stable adducts or bond activation of the ferrocenophane bridge. In the absence of donors, dimerization of the phosphenium cation to the corresponding dication is observed or P-C bond activation with migration of a substituent leading to a putative phosphoniodiphosphene. Using 1,3-di-tert-butylimidazol-2-silylene as the donor, further reaction of the initially formed chlorosilane leads to activation of a P-P bond of the ferrocenophane scaffold with ring expansion of the ansa-bridge. The donor formation and bonding situation are investigated by density functional theory calculations as well as experimental methods (e.g., NMR spectroscopy and X-ray crystallography).
Collapse
Affiliation(s)
- Roman Franz
- Institute for Chemistry and CINSaT, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Balázs Szathmári
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem Rkp 3, 1111 Budapest, Hungary
| | - Clemens Bruhn
- Institute for Chemistry and CINSaT, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| | - Zsolt Kelemen
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Műegyetem Rkp 3, 1111 Budapest, Hungary
| | - Rudolf Pietschnig
- Institute for Chemistry and CINSaT, University of Kassel, Heinrich-Plett-Straße 40, 34132 Kassel, Germany
| |
Collapse
|
5
|
Horikoshi R, Sumitani R, Shimooka N, Mochida T. Synthesis and Electrochemical Properties of Mixed‐Metal Triangular Complexes Based on Ferrocene‐Based Ligands and Dinuclear Arene Ruthenium Building Blocks. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ryo Horikoshi
- Department of Environmental Science and Technology Faculty of Design Technology Osaka Sangyo University Nakagaito 574-8530 Daito Osaka Japan
| | - Ryo Sumitani
- Department of Chemistry Graduate School of Science Kobe University 1-1, Rokkodai, Nada 657-8501 Kobe Japan
| | - Natsuko Shimooka
- Department of Environmental Science and Technology Faculty of Design Technology Osaka Sangyo University Nakagaito 574-8530 Daito Osaka Japan
| | - Tomoyuki Mochida
- Department of Chemistry Graduate School of Science Kobe University 1-1, Rokkodai, Nada 657-8501 Kobe Japan
- Research Center for Membrane and Film Technology Kobe University 1-1, Rokkodai, Nada 657-8501 Kobe Hyogo Japan
| |
Collapse
|
6
|
Oligo- and polymerization of phospha [2]ferrocenophanes to one dimensional phosphorus chains with ferrocenylene handles. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124589] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
7
|
Dey S, Roesler F, Höfler MV, Bruhn C, Gutmann T, Pietschnig R. Synthesis, Structure and Cu‐Phenylacetylide Coordination of an Unsymmetrically Substituted Bulky dppf‐Analog. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100939] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Subhayan Dey
- Institute for Chemistry and CINSaT University of Kassel Heinrich Plett-Straße 40 34132 Kassel Germany
| | - Fabian Roesler
- Institute for Chemistry and CINSaT University of Kassel Heinrich Plett-Straße 40 34132 Kassel Germany
| | - Mark V. Höfler
- Technical University Darmstadt Eduard Zintl-Institute for Inorganic and Physical Chemistry Alarich-Weiss-Straße 8 64287 Darmstadt Germany
| | - Clemens Bruhn
- Institute for Chemistry and CINSaT University of Kassel Heinrich Plett-Straße 40 34132 Kassel Germany
| | - Torsten Gutmann
- Technical University Darmstadt Eduard Zintl-Institute for Inorganic and Physical Chemistry Alarich-Weiss-Straße 8 64287 Darmstadt Germany
| | - Rudolf Pietschnig
- Institute for Chemistry and CINSaT University of Kassel Heinrich Plett-Straße 40 34132 Kassel Germany
| |
Collapse
|
8
|
|
9
|
Franz R, Bruhn C, Pietschnig R. C2-Symmetric P-Stereogenic Ferrocene Ligands with Heavier Chalcogenophosphinous Acid Ester Donor Sites. Molecules 2021; 26:molecules26071899. [PMID: 33801715 PMCID: PMC8037359 DOI: 10.3390/molecules26071899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 12/02/2022] Open
Abstract
tert-Butyl-substituted diphospha[2]ferrocenophane was used as a stereochemically confined diphosphane to investigate the addition of various dichalcoganes (R2Ch2; Ch = S, Se, Te and R = Me, Ph). Bischalcogenophosphinous acid esters bearing four soft donor sides were obtained as a mixture of rac and meso diastereomers and characterized by means of multinuclear NMR and X-ray analysis. The coordination chemistry of multidentate ligand 3b was explored toward d10 coinage metal centers (Cu(I), Ag(I), and Au(I)), yielding various bimetallic complexes.
Collapse
|
10
|
Franz R, Nasemann S, Bruhn C, Kelemen Z, Pietschnig R. Chalcogen-Transfer Rearrangement: Exploring Inter- versus Intramolecular P-P Bond Activation. Chemistry 2021; 27:641-648. [PMID: 32678960 PMCID: PMC7839705 DOI: 10.1002/chem.202002481] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Indexed: 11/08/2022]
Abstract
tert-Butyl-substituted diphospha[2]ferrocenophane has been used as a stereochemically confined diphosphane to explore the addition of O, S, Se and Te. Although the diphosphanylchalcogane has been obtained for tellurium, all other chalcogens give diphosphane monochalcogenides. The latter transform via chalcogen-transfer rearrangement to the corresponding diphosphanylchalcoganes upon heating. The kinetics of this rearrangement has been followed with NMR spectroscopy supported by DFT calculations. Intermediates during rearrangement point to a disproportionation/synproportionation mechanism for the S and Se derivatives. Cyclic voltammetry together with DFT studies indicate ferrocene-centred oxidation for most of the compounds presented.
Collapse
Affiliation(s)
- Roman Franz
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Strasse 4034132KasselGermany
| | - Sina Nasemann
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Strasse 4034132KasselGermany
| | - Clemens Bruhn
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Strasse 4034132KasselGermany
| | - Zsolt Kelemen
- Department of Inorganic and Analytical ChemistryBudapest University of Technology and Economics and MTA-BME, Computation Driven Chemistry Research GroupSzent Gellért tér 41111BudapestHungary
| | - Rudolf Pietschnig
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Strasse 4034132KasselGermany
| |
Collapse
|
11
|
Popp J, Hanf S, Hey‐Hawkins E. Unusual Racemization of Tertiary P-Chiral Ferrocenyl Phosphines. Chemistry 2020; 26:5765-5769. [PMID: 32048370 PMCID: PMC7317868 DOI: 10.1002/chem.202000218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Indexed: 11/11/2022]
Abstract
Tertiary phosphines are generally known to withstand inversion under moderate conditions. In this work, a remarkable racemization process of three P-chiral ferrocenyl phosphines is reported. Subjected to conventional column chromatography as highly enantioenriched compounds, they greatly experienced racemization when collected at the column outlet within minutes. Initially, attention was drawn to this unusual inversion behavior after observing that the superb enantiomeric excess of these ligands (>95 % ee in all cases) was almost lost in their corresponding ruthenium(II) complexes. Successively excluding possible racemization causes, these P-chiral ferrocenyl phosphines were found to undergo a significant, acid-catalyzed racemization process at room temperature within a few minutes. This process is mainly observed during standard column chromatography by using conventional silica or alumina, but can also be triggered deliberately by addition of certain acids. Therefore, the stereochemical preservation of P-chiral phosphines during their purification may per se not always be guaranteed, since column chromatography is the most frequently used technique for purifying such types of compounds.
Collapse
Affiliation(s)
- John Popp
- Faculty of Chemistry and MineralogyInstitute of Inorganic ChemistryLeipzig UniversityJohannisallee 2904103LeipzigGermany
| | - Schirin Hanf
- Faculty of Chemistry and MineralogyInstitute of Inorganic ChemistryLeipzig UniversityJohannisallee 2904103LeipzigGermany
- Department of ChemistryCambridge UniversityLensfield RoadCambridgeCB2 1EWUK
| | - Evamarie Hey‐Hawkins
- Faculty of Chemistry and MineralogyInstitute of Inorganic ChemistryLeipzig UniversityJohannisallee 2904103LeipzigGermany
| |
Collapse
|
12
|
Dey S, Buzsáki D, Bruhn C, Kelemen Z, Pietschnig R. Bulky 1,1'-bisphosphanoferrocenes and their coordination behaviour towards Cu(i). Dalton Trans 2020; 49:6668-6681. [PMID: 32342065 DOI: 10.1039/d0dt00941e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Two bulky mesityl substituted dppf-analogues Fe(C5H4PMes2)2 (Mes = 2,4,6-Me3C6H2, 1) and Fe(C5H4PMes2)(C5H4PPh2) (Mes = 2,4,6-Me3C6H2, Ph = C6H5, 3) have been prepared and their properties as donor ligands have been explored using heteronuclear NMR spectroscopy and in particular via1JP-Se coupling, cyclic voltammetry and DFT calculations. Based on the results obtained, a series of mono- and dinuclear Cu(i) complexes have been prepared with these new diphosphane ligands using Br-, I-, and BF4- as counter anions. For the very bulky ligand 1 rare and unprecedented double bridging complexation modes have been observed containing two non-planar Cu2Br2 units, while for the other dinuclear complexes planar Cu2Br2 units have been found. The Cu(i) complexes of 1 and 3 were then used as catalysts for CO2-fixation reaction with terminal alkynes, and complexes with ligand 3 were found to be more efficient than those with 1. DFT calculations performed on compounds 1, 3 and their Cu(i) complexes were able to verify the trend of these catalytic reactions.
Collapse
Affiliation(s)
- Subhayan Dey
- Institut für Chemie und CINSaT, University of Kassel, Heinrich Plett-Straße 40, 34132 Kassel, Germany.
| | - Daniel Buzsáki
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group, Szent Gellért tér 4, 1111 Budapest, Hungary
| | - Clemens Bruhn
- Institut für Chemie und CINSaT, University of Kassel, Heinrich Plett-Straße 40, 34132 Kassel, Germany.
| | - Zsolt Kelemen
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group, Szent Gellért tér 4, 1111 Budapest, Hungary
| | - Rudolf Pietschnig
- Institut für Chemie und CINSaT, University of Kassel, Heinrich Plett-Straße 40, 34132 Kassel, Germany.
| |
Collapse
|
13
|
Stennett TE, Jayaraman A, Brückner T, Schneider L, Braunschweig H. Hydrophosphination of boron-boron multiple bonds. Chem Sci 2019; 11:1335-1341. [PMID: 34123256 PMCID: PMC8148080 DOI: 10.1039/c9sc05908c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Five compounds containing boron–boron multiple bonds are shown to undergo hydrophosphination reactions with diphenylphosphine in the absence of a catalyst. With diborenes, the products obtained are highly dependent on the substitution pattern at the boron atoms, with both 1,1- and 1,2-hydrophosphinations observed. With a symmetrical diboryne, 1,2-hydrophosphination yields a hydro(phosphino)diborene. The different mechanistic pathways for the hydrophosphination of diborenes are rationalised with the aid of density functional theory calculations. Compounds containing boron–boron double and triple bonds are shown to undergo uncatalysed hydrophosphination reactions with diphenylphosphine.![]()
Collapse
Affiliation(s)
- Tom E Stennett
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Arumugam Jayaraman
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Tobias Brückner
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Lea Schneider
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Holger Braunschweig
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| |
Collapse
|
14
|
Weller S, Schlindwein SH, Feil CM, Kelemen Z, Buzsáki D, Nyulászi L, Isenberg S, Pietschnig R, Nieger M, Gudat D. A Ferrocenophane-Based Diaminophosphenium Ion. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00701] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Stefan Weller
- Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany
| | - Simon H. Schlindwein
- Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany
| | - Christoph M. Feil
- Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany
| | - Zsolt Kelemen
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics and MTA-BME Computation Driven Chemistry Research Group, Szent Gellért tér 4, 1111 Budapest, Hungary
| | - Dániel Buzsáki
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics and MTA-BME Computation Driven Chemistry Research Group, Szent Gellért tér 4, 1111 Budapest, Hungary
| | - László Nyulászi
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics and MTA-BME Computation Driven Chemistry Research Group, Szent Gellért tér 4, 1111 Budapest, Hungary
| | - Stefan Isenberg
- Institut für Chemie und CINSaT, Universität Kassel, Heinrich Plett-Straße 40, 34132 Kassel, Germany
| | - Rudolf Pietschnig
- Institut für Chemie und CINSaT, Universität Kassel, Heinrich Plett-Straße 40, 34132 Kassel, Germany
| | - Martin Nieger
- Department of Chemistry, University of Helsinki, P.O. Box 55, 00014 University of Helsinki, Finland
| | - Dietrich Gudat
- Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany
| |
Collapse
|
15
|
Isenberg S, Weller S, Kargin D, Valić S, Schwederski B, Kelemen Z, Bruhn C, Krekić K, Maurer M, Feil CM, Nieger M, Gudat D, Nyulászi L, Pietschnig R. Bis-[3]Ferrocenophanes with Central >E-E'< Bonds (E, E'=P, SiH): Preparation, Properties, and Thermal Activation. ChemistryOpen 2019; 8:1235-1243. [PMID: 31592068 PMCID: PMC6769432 DOI: 10.1002/open.201900182] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Indexed: 11/17/2022] Open
Abstract
A series of bis-[3]ferrocenophanes of the general type Fe(C5H4E')2E-E(E'C5H4)2Fe (E=P, SiH and E'=PtBu, NneoPentyl, NSi(CH3)3) with an isolobal molecular framework have been prepared and characterized by heteronuclear NMR spectroscopy and X-ray crystallography. The thermal dissociation behavior with respect to homolytic fission of the central bond generating phosphorus centered radicals was investigated using EPR spectroscopy and quantum chemical calculations.
Collapse
Affiliation(s)
- Stefan Isenberg
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Straße 4034132KasselGermany
| | - Stefan Weller
- Institute for Inorganic ChemistryUniversity of StuttgartPfaffenwaldring 5570550StuttgartGermany
| | - Denis Kargin
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Straße 4034132KasselGermany
| | - Srećko Valić
- Ruđer Bošković InstituteBijenička cesta 5410000ZagrebCroatia
| | - Brigitte Schwederski
- Institute for Inorganic ChemistryUniversity of StuttgartPfaffenwaldring 5570550StuttgartGermany
| | - Zsolt Kelemen
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Straße 4034132KasselGermany
- Department of Inorganic and Analytical Chemistry and MTA-BME Computation Driven Chemistry Research GroupBudapest University of Technology and EconomicsSzent Gellért tér 41111BudapestHungary
| | - Clemens Bruhn
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Straße 4034132KasselGermany
| | - Kristijan Krekić
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Straße 4034132KasselGermany
| | - Martin Maurer
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Straße 4034132KasselGermany
| | - Christoph M. Feil
- Institute for Inorganic ChemistryUniversity of StuttgartPfaffenwaldring 5570550StuttgartGermany
| | - Martin Nieger
- Department of ChemistryUniversity of HelsinkiP.O Box 55Helsinki00014Finland
| | - Dietrich Gudat
- Institute for Inorganic ChemistryUniversity of StuttgartPfaffenwaldring 5570550StuttgartGermany
| | - László Nyulászi
- Department of Inorganic and Analytical Chemistry and MTA-BME Computation Driven Chemistry Research GroupBudapest University of Technology and EconomicsSzent Gellért tér 41111BudapestHungary
| | - Rudolf Pietschnig
- Institute for Chemistry and CINSaTUniversity of KasselHeinrich Plett-Straße 4034132KasselGermany
| |
Collapse
|
16
|
Ordyszewska A, Szynkiewicz N, Perzanowski E, Chojnacki J, Wiśniewska A, Grubba R. Structural and spectroscopic analysis of a new family of monomeric diphosphinoboranes. Dalton Trans 2019; 48:12482-12495. [PMID: 31361287 DOI: 10.1039/c9dt02195g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a series of amino- and aryl(diphosphino)boranes R2PB(R'')PR'2, where R2P, R'2P = tBu2P, tBuPhP, Ph2P, Cy2P, and R'' = iPr2N, Ph, which were obtained via the metathesis reaction of iPr2NBBr2 or PhBBr2 with selected lithium phosphides. The structures of isolated diphosphinoboranes were characterized in the solid state and in solution by means of X-ray diffraction and NMR spectroscopy, respectively. The utility of these P-B-P species as ligands for transition metal complexes was tested in the reaction with [(COD)PtMe2]. Moreover, we carried out DFT calculations to elucidate bonding interactions and philicity of the reactive centers as well as to analyze conformations of the studied species. Electronic and steric properties of substituents on P and B atoms were found to have a strong influence on the structures of the obtained compounds. Three main types of diphosphinoboranes were distinguished, based on the strength of P-B π-interaction within the molecule: (i) application of strong electron-donating substituents on P-atoms and electron-accepting phenyl groups on B atoms led to the structure with one double P[double bond, length as m-dash]B and one single P-B bond and diverse planar and pyramidal geometry of phosphanyl groups; (ii) reduction of the donor ability of phosphanyl groups gave diphosphanylboranes with delocalized P-B-P π-interactions; (iii) introduction of amino groups with strong donor abilities on B atoms canceled P-B π-interactions and allowed compounds with two very long P-B bonds and two pyramidal phosphanyl groups to be obtained.
Collapse
Affiliation(s)
- Anna Ordyszewska
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza St. 11/12, PL-80-233, Gdansk, Poland.
| | - Natalia Szynkiewicz
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza St. 11/12, PL-80-233, Gdansk, Poland.
| | - Emil Perzanowski
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza St. 11/12, PL-80-233, Gdansk, Poland.
| | - Jarosław Chojnacki
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza St. 11/12, PL-80-233, Gdansk, Poland.
| | - Aleksandra Wiśniewska
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza St. 11/12, PL-80-233, Gdansk, Poland.
| | - Rafał Grubba
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza St. 11/12, PL-80-233, Gdansk, Poland.
| |
Collapse
|
17
|
Weller S, Schlindwein SH, Feil CM, Kelemen Z, Buzsáki D, Nyulászi L, Isenberg S, Pietschnig R, Nieger M, Gudat D. Controllable access to P-functional [3]ferrocenophane and [4]ferrocenophane frameworks. Dalton Trans 2019; 48:6236-6247. [PMID: 30984960 DOI: 10.1039/c9dt00892f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Condensation of secondary 1,1'-diaminoferrocenes with phosphorus trihalides (PCl3 or PBr3) yielded either P-halo-1,3-diaza-2-phospha[3]ferrocenophanes or 1,1'-diaminoferrocenediyl-bis(dichlorophosphines), respectively. The latter provide controlled access to both [3]- and [4]ferrocene frameworks. Thus, reductive coupling with magnesium gave diaza-diphospha[4]ferrocenophane-annelated tetraphosphetanes, while a reaction with LiNMe2 produced a P-chloro-diazaphospha[3]ferrocenophane. Condensation of diaminoferrocenes and aminodichlorophosphines were mostly unselective, but afforded in one case a 3-amino[3]ferrocenophane. All reaction products were characterised by spectroscopic and single-crystal XRD studies. DFT studies indicate that the product selectivity in the reactions studied depends on a combination of kinetic and thermodynamic effects, which correlate subtly with the steric bulk of the N-substituents. Cyclic voltammetry measurements revealed that the ferrocenophanes can undergo multiple oxidation events, the first of which may according to DFT studies be located in both the ferrocene and aminophosphine units. The quantum chemical studies provided also insight into stereochemical aspects like ring strain in the ferrocenophane units.
Collapse
Affiliation(s)
- Stefan Weller
- Institut für Anorganische Chemie, University of Stuttgart, Pfaffenwaldring 55, 70550 Stuttgart, Germany.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Kargin D, Kelemen Z, Krekić K, Nyulászi L, Pietschnig R. A Stabilized Bisphosphanylsilylene and Its Heavier Congeners. Chemistry 2018; 24:16774-16778. [DOI: 10.1002/chem.201804684] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Denis Kargin
- Institut für Chemie und CINSaT Universität Kassel Heinrich Plett-Straße 40 34132 Kassel Germany
| | - Zsolt Kelemen
- Institut für Chemie und CINSaT Universität Kassel Heinrich Plett-Straße 40 34132 Kassel Germany
- Department of Inorganic and Analytical Chemistry, and MTA-BME Computation Driven Chemistry Research Group. Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
- Present address: Institut de Ciència de Materials de Barcelona (C.S.I.C) Campus U.A.B. 08193 Bellaterra, Barcelona Spain
| | - Kristijan Krekić
- Institut für Chemie und CINSaT Universität Kassel Heinrich Plett-Straße 40 34132 Kassel Germany
| | - László Nyulászi
- Department of Inorganic and Analytical Chemistry, and MTA-BME Computation Driven Chemistry Research Group. Budapest University of Technology and Economics Szent Gellért tér 4 1111 Budapest Hungary
| | - Rudolf Pietschnig
- Institut für Chemie und CINSaT Universität Kassel Heinrich Plett-Straße 40 34132 Kassel Germany
| |
Collapse
|
19
|
Bhattacharjee H, Dey S, Zhu J, Sun W, Müller J. Strained azabora[2]ferrocenophanes. Chem Commun (Camb) 2018; 54:5562-5565. [DOI: 10.1039/c8cc02965b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The first BN-bridged [2]ferrocenophanes were synthesized and their structures and strain enthalpies were investigated.
Collapse
Affiliation(s)
| | - Subhayan Dey
- Department of Chemistry
- University of Saskatchewan
- Saskatoon
- Canada
| | - Jianfeng Zhu
- Saskatchewan Structural Sciences Centre
- University of Saskatchewan
- Saskatoon
- Canada
| | - Wei Sun
- Saskatchewan Structural Sciences Centre
- University of Saskatchewan
- Saskatoon
- Canada
| | - Jens Müller
- Department of Chemistry
- University of Saskatchewan
- Saskatoon
- Canada
| |
Collapse
|