1
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Heinl S, Peresypkina E, Kremer W, Scheer M. A lens-shaped supramolecule based on the bulky pentaphosphaferrocene [Cp BIGFe(η 5-P 5)] and CuBr 2. Chem Commun (Camb) 2023; 59:10263-10266. [PMID: 37534857 DOI: 10.1039/d3cc03244b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Besides inherent fullerene-like hollow spheres, the metallasupramolecular chemistry of pentaphosphaferrocenes and CuBr2 afforded a conceptually new product, a compact 3.2 nm sized supramolecule [{1d}6(CuBr)32(CH3CN)6] formed by six largest pentaphosphaferrocene units [CpBIGFe(η5-P5)] (1d: CpBIG = η5-C5(4-nBuC6H4)5) so far and a framework of 32 copper and 32 bromide ions.
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Affiliation(s)
- Sebastian Heinl
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, Regensburg 93040, Germany.
| | - Eugenia Peresypkina
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, Regensburg 93040, Germany.
| | - Werner Kremer
- Institute of Biophysics and Physical Biochemistry, University of Regensburg, Universitätsstraße 31, Regensburg 93040, Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstraße 31, Regensburg 93040, Germany.
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2
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Riesinger C, Dielmann F, Szlosek R, Virovets AV, Scheer M. Synthesis and Reactivity of a Cyclooctatetraene-Like Polyphosphorus Ligand Complex [Cyclo-P 8 ]. Angew Chem Int Ed Engl 2023; 62:e202218828. [PMID: 36692270 DOI: 10.1002/anie.202218828] [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: 12/20/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/25/2023]
Abstract
The thermolysis of Cp'''Ta(CO)4 with white phosphorus (P4 ) gives access to [{Cp'''Ta}2 (μ,η2 : 2 : 2 : 2 : 1 : 1 -P8 )] (A), representing the first complex containing a cyclooctatetraene-like (COT) cyclo-P8 ligand. While ring sizes of n >6 have remained elusive for cyclo-Pn structural motifs, the choice of the transition metal, co-ligand and reaction conditions allowed the isolation of A. Reactivity investigations reveal its versatile coordination behaviour as well as its redox properties. Oxidation leads to dimerization to afford [{Cp'''Ta}4 (μ4 ,η2 : 2 : 2 : 2 : 2 : 2 : 2 : 2 : 1 : 1 : 1 : 1 -P16 )][TEF]2 (4, TEF=[Al(OC{CF3 }3 )4 ]- ). Reduction, however, leads to the fission of one P-P bond in A followed by rapid dimerization to form [K@[2.2.2]cryptand]2 [{Cp'''Ta}4 (μ4 ,η2 : 2 : 2 : 2 : 2 : 2 : 2 : 2 : 1 : 1 : 1 : 1 -P16 )] (5), which features an unprecedented chain-type P16 ligand. Lastly, A serves as a P2 synthon, via ring contraction to the triple-decker complex [{Cp'''Ta}2 (μ,η6 : 6 -P6 )] (B).
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Affiliation(s)
- Christoph Riesinger
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Fabian Dielmann
- Department of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innrain 80-82, 6020, Innsbruck, Austria
| | - Robert Szlosek
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
| | - Alexander V Virovets
- Institute of Inorganic Chemistry, Goethe-University Frankfurt am Main, Max-von-Laue-Straße 7, 60438, Frankfurt am Main, Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, Universitätsstr. 31, 93053, Regensburg, Germany
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3
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Yadav R, Weber M, Singh AK, Münzfeld L, Gramüller J, Gschwind RM, Scheer M, Roesky PW. A Structural Diversity of Molecular Alkaline-Earth-Metal Polyphosphides: From Supramolecular Wheel to Zintl Ion. Chemistry 2021; 27:14128-14137. [PMID: 34403183 PMCID: PMC8518058 DOI: 10.1002/chem.202102355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Indexed: 01/31/2023]
Abstract
A series of molecular group 2 polyphosphides has been synthesized by using air-stable [Cp*Fe(η5 -P5 )] (Cp*=C5 Me5 ) or white phosphorus as polyphosphorus precursors. Different types of group 2 reagents such as organo-magnesium, mono-valent magnesium, and molecular calcium hydride complexes have been investigated to activate these polyphosphorus sources. The organo-magnesium complex [(Dipp BDI-Mg(CH3 ))2 ] (Dipp BDI={[2,6-i Pr2 C6 H3 NCMe]2 CH}- ) reacts with [Cp*Fe(η5 -P5 )] to give an unprecedented Mg/Fe-supramolecular wheel. Kinetically controlled activation of [Cp*Fe(η5 -P5 )] by different mono-valent magnesium complexes allowed the isolation of Mg-coordinated formally mono- and di-reduced products of [Cp*Fe(η5 -P5 )]. To obtain the first examples of molecular calcium-polyphosphides, a molecular calcium hydride complex was used to reduce the aromatic cyclo-P5 ring of [Cp*Fe(η5 -P5 )]. The Ca-Fe-polyphosphide is also characterized by quantum chemical calculations and compared with the corresponding Mg complex. Moreover, a calcium coordinated Zintl ion (P7 )3- was obtained by molecular calcium hydride mediated P4 reduction.
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Affiliation(s)
- Ravi Yadav
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstraße 1576131KarlsruheGermany
| | - Martin Weber
- Institute of Inorganic ChemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany).
| | - Akhil K. Singh
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstraße 1576131KarlsruheGermany
| | - Luca Münzfeld
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstraße 1576131KarlsruheGermany
| | - Johannes Gramüller
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
| | - Ruth M. Gschwind
- Institute of Organic ChemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany
| | - Manfred Scheer
- Institute of Inorganic ChemistryUniversity of RegensburgUniversitätsstrasse 3193040RegensburgGermany).
| | - Peter W. Roesky
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstraße 1576131KarlsruheGermany
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4
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Moussa ME, Fleischmann M, Balázs G, Virovets AV, Peresypkina E, Shelyganov PA, Seidl M, Reichl S, Scheer M. Versatile Coordination of Ag I and Cu I Ions towards cyclo-As 5 Ligands. Chemistry 2021; 27:9742-9747. [PMID: 33988892 PMCID: PMC8361777 DOI: 10.1002/chem.202101096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Indexed: 11/10/2022]
Abstract
The reactions of the cyclo‐As5 complex [Cp*Fe(η5‐As5)] (B) with the AgI and CuI salts of the weakly coordinating anion (WCA) [FAl{OC6F10(C6F5)}3]− ([FAl]−) are studied. These reactions allow the synthesis of the mononuclear complexes [M(η5 : η2‐B)2][FAl] (M=Ag (1), Cu (2)) when a ratio of B/M(FAl) 2 : 1 is used. Compound 1 shows an unusual disorder of the central AgI cation between two π‐coordinating cyclo‐As5 ligands, which is absent in 2 pointing to a weak interaction of the Ag center towards the cyclo‐As5 ligands in B. When the ratio of B/Ag(FAl) is changed to 3 : 1 or 1 : 1, the respective coordination compounds [Ag(η2‐B)3][FAl] (3) and [Ag2(η2 : η2‐B)2][FAl]2 (4) are accessible. The coordination modes of the cyclo‐As5 units in 1, 3 and 4 are all different, reflecting the adaptive coordination behavior of B towards AgI ions. The optimized geometries in the gas phase of 1–4 are determined by DFT calculations to support the bonding situation observed in their solid‐state structures.
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Affiliation(s)
- Mehdi Elsayed Moussa
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Martin Fleischmann
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Gábor Balázs
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Alexander V Virovets
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Eugenia Peresypkina
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Pavel A Shelyganov
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Michael Seidl
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Stephan Reichl
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
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5
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Piesch M, Reichl S, Riesinger C, Seidl M, Balazs G, Scheer M. Redox Chemistry of Heterobimetallic Polypnictogen Triple-Decker Complexes - Rearrangement, Fragmentation and Transfer. Chemistry 2021; 27:9129-9140. [PMID: 33857335 PMCID: PMC8360055 DOI: 10.1002/chem.202100844] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Indexed: 12/22/2022]
Abstract
The redox chemistry of the heterobimetallic triple‐decker complexes [(Cp*Fe)(Cp′′′Co)(μ,η5:η4‐E5)] (E=P (1), As (2), Cp*=1,2,3,4,5‐pentamethyl‐cyclopentadienyl, Cp′′′=1,2,4‐tri‐tertbutyl‐cyclopentadienyl) and [(Cp′′′Co)(Cp′′′Ni)(μ,η3:η3‐E3)] (E=P (10), As (11)) was investigated. Compound 1 and 2 could be oxidized to the monocations 3 and 4 and further to the dications 5 and 6, while the initially folded cyclo‐E5 ligand planarizes upon oxidation. The reduction leads to an opposite change in the geometry of the middle deck, which is now folded stronger into the direction of the other metal fragment (formation of monoanions 7 and 8). For the arsenic compound 8, a different behavior is found since a fragmentation into an As6 (9) and As3 ligand complex occurs. The Co and Ni triple‐decker complexes 10 and 11 can be oxidized initially to the heterometallic monocations 12 and 13, which are not stable in solution and convert selectively into the homometallic nickel complexes 14 and 15 and the cobalt complexes 16 and 17. This behavior was further proven by the oxidation of [(Cp′′′Co)(Cp′′Ni)(μ,η3:η2‐P3)] (19, Cp′′=1,3‐di‐tertbutyl‐cyclopentadienyl) comprising two different Cp ligands. The transfer of {CpRM} fragments can be suppressed when a {W(CO)5} unit is coordinated to the P3 ligand (20) prior to the oxidation and the mixed cobalt and nickel cation 21 can be isolated. The reduction of 10 and 11 yields the heterometallic monoanions 22 and 23, where no transfer of the {CpRM} fragments is observed.
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Affiliation(s)
- Martin Piesch
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Stephan Reichl
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Christoph Riesinger
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Michael Seidl
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Gabor Balazs
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
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6
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Heinl C, Peresypkina E, Balázs G, Mädl E, Virovets AV, Scheer M. The Missing Parent Compound [(C 5 H 5 )Fe(η 5 -P 5 )]: Synthesis, Characterization, Coordination Behavior and Encapsulation. Chemistry 2021; 27:7542-7548. [PMID: 33543820 PMCID: PMC8252565 DOI: 10.1002/chem.202100203] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Indexed: 12/02/2022]
Abstract
The so far missing parent compound of the large family of pentaphosphaferrocenes [CpFe(η5 -P5 )] (1 b) was synthesized by the thermolysis of [CpFe(CO)2 ]2 with P4 using the very high-boiling solvent diisopropylbenzene. It was comprehensively characterized by, inter alia, NMR spectroscopy, single crystal X-ray structure analysis, cyclic voltammetry and DFT computations. Moreover, its coordination behavior towards CuI halides was explored, revealing the unprecedented 2D polymeric networks [{CpFe(η5:1:1:1:1 -P5 )}Cu2 (μ-X)2 ]n (2 a: X=Cl, 2 b: X=Br) and [{CpFe(η5:1:1 -P5 )}Cu(μ-I)]n (3) and even the first cyclo-P5 -containing 3D coordination polymer [{CpFe(η5:1:1 -P5 )}Cu(μ-I)]n (4). The sandwich complex 1 b can also be incorporated in nano-sized supramolecules based on [Cp*Fe(η5 -P5 )] (1 a) and CuX (X=Cl, Br, I): [CpFe(η5 -P5 )]@[{Cp*Fe(η5 -P5 )}12 (CuX)20-n ] (5 a: X=Cl, n=2.4; 5 b: X=Br, n=2.4; 5 c: X=I, n=0.95). Thereby, the formation of the CuI-containing fullerene-like sphere 5 c is found for the first time.
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Affiliation(s)
- Claudia Heinl
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Eugenia Peresypkina
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Gábor Balázs
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Eric Mädl
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | | | - Manfred Scheer
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
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7
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Reinfandt N, Michenfelder N, Schoo C, Yadav R, Reichl S, Konchenko SN, Unterreiner AN, Scheer M, Roesky PW. d/f-Polypnictides Derived by Non-Classical Ln 2+ Compounds: Synthesis, Small Molecule Activation and Optical Properties. Chemistry 2021; 27:7862-7871. [PMID: 33780594 PMCID: PMC8252591 DOI: 10.1002/chem.202100605] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Indexed: 11/15/2022]
Abstract
Reduction chemistry induced by divalent lanthanides has been primarily focused on samarium so far. In light of the rich physical properties of the lanthanides, this limitation to one element is a drawback. Since molecular divalent compounds of almost all lanthanides have been available for some time, we used one known and two new non‐classical reducing agents of the early lanthanides to establish a sophisticated reduction chemistry. As a result, six new d/f‐polyphosphides or d/f‐polyarsenides, [K(18‐crown‐6)] [Cp′′2Ln(E5)FeCp*] (Ln=La, Ce, Nd; E=P, As) were obtained. Their reactivity was studied by activation of P4, resulting in a selective expansion of the P5 rings. The obtained compounds [K(18‐crown‐6)] [Cp′′2Ln(P7)FeCp*] (Ln=La, Nd) are the first examples of an activation of P4 by a f‐element‐polypnictide complex. Additionally, the first systematic femtosecond (fs)‐spectroscopy investigations of d/f‐polypnictides are presented to showcase the advantages of having access to a broader series of lanthanide compounds.
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Affiliation(s)
- Niklas Reinfandt
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131, Karlsruhe, Germany
| | - Nadine Michenfelder
- Institut für Physikalische Chemie, Karlsruher Institut für Technologie (KIT), Fritz-Haber-Weg 2, Geb. 30.44, 76131, Karlsruhe, Germany
| | - Christoph Schoo
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131, Karlsruhe, Germany
| | - Ravi Yadav
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131, Karlsruhe, Germany
| | - Stephan Reichl
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstraße 31, 93040, Regensburg, Germany
| | - Sergey N Konchenko
- Nikolaev Institute of Inorganic Chemistry SB RAS, Prosp. Lavrentieva 3, 630090, Novosibirsk, Russia
| | - Andreas N Unterreiner
- Institut für Physikalische Chemie, Karlsruher Institut für Technologie (KIT), Fritz-Haber-Weg 2, Geb. 30.44, 76131, Karlsruhe, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstraße 31, 93040, Regensburg, Germany
| | - Peter W Roesky
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstr. 15, Geb. 30.45, 76131, Karlsruhe, Germany
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8
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Abstract
The f‐block chemistry of phospholyl and arsolyl ligands, heavier p‐block analogues of substituted cyclopentadienyls (CpR, C5R5) where one or more CR groups are replaced by P or As atoms, is less developed than for lighter isoelectronic C5R5 rings. Heterocyclopentadienyl complexes can exhibit properties that complement and contrast with CpR chemistry. Given that there has been renewed interest in phospholyl and arsolyl f‐block chemistry in the last two decades, coinciding with a renaissance in f‐block solution chemistry, a review of this field is timely. Here, the syntheses of all structurally characterised examples of lanthanide and actinide phospholyl and arsolyl complexes to date are covered, including benzannulated derivatives, and together with group 3 complexes for completeness. The physicochemical properties of these complexes are reviewed, with the intention of motivating further research in this field.
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Affiliation(s)
- David P Mills
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M139PL, UK
| | - Peter Evans
- Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M139PL, UK
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9
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Riesinger C, Balázs G, Bodensteiner M, Scheer M. Stabilization of Pentaphospholes as η 5 -Coordinating Ligands. Angew Chem Int Ed Engl 2020; 59:23879-23884. [PMID: 32956573 PMCID: PMC7814675 DOI: 10.1002/anie.202011571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Indexed: 12/15/2022]
Abstract
Electrophilic functionalisation of [Cp*Fe(η5 -P5 )] (1) yields the first transition-metal complexes of pentaphospholes (cyclo-P5 R). Silylation of 1 with [(Et3 Si)2 (μ-H)][B(C6 F5 )4 ] leads to the ionic species [Cp*Fe(η5 -P5 SiEt3 )][B(C6 F5 )4 ] (2), whose subsequent reaction with H2 O yields the parent compound [Cp*Fe(η5 -P5 H)][B(C6 F5 )4 ] (3). The synthesis of a carbon-substituted derivative [Cp*Fe(η5 -P5 Me)][X] ([X]- =[FB(C6 F5 )3 ]- (4 a), [B(C6 F5 )4 ]- (4 b)) is achieved by methylation of 1 employing [Me3 O][BF4 ] and B(C6 F5 )3 or a combination of MeOTf and [Li(OEt2 )2 ][B(C6 F5 )4 ]. The structural characterisation of these compounds reveals a slight envelope structure for the cyclo-P5 R ligand. Detailed NMR-spectroscopic studies suggest a highly dynamic behaviour and thus a distinct lability for 2 and 3 in solution. DFT calculations shed light on the electronic structure and bonding situation of this unprecedented class of compounds.
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Affiliation(s)
- Christoph Riesinger
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | - Gábor Balázs
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | | | - Manfred Scheer
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
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10
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Riesinger C, Balázs G, Bodensteiner M, Scheer M. Stabilisierung von Pentaphospholen als η
5
‐koordinierende Liganden. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christoph Riesinger
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Gábor Balázs
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Michael Bodensteiner
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Manfred Scheer
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
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11
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Riesinger C, Dütsch L, Balázs G, Bodensteiner M, Scheer M. Cationic Functionalisation by Phosphenium Ion Insertion. Chemistry 2020; 26:17165-17170. [PMID: 32996637 PMCID: PMC7839539 DOI: 10.1002/chem.202003291] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/21/2020] [Indexed: 12/12/2022]
Abstract
The reaction of [Cp'''Ni(η3 -P3 )] (1) with in situ generated phosphenium ions [RR'P]+ yields the unprecedented polyphosphorus cations of the type [Cp'''Ni(η3 -P4 R2 )][X] (R=Ph (2 a), Mes (2 b), Cy (2 c), 2,2'-biphen (2 d), Me (2 e); [X]- =[OTf]- , [SbF6 ]- , [GaCl4 ]- , [BArF ]- , [TEF]- ) and [Cp'''Ni(η3 -P4 RCl)][TEF] (R=Ph (2 f), tBu (2 g)). In the reaction of 1 with [Br2 P]+ , an analogous compound is observed only as an intermediate and the final product is an unexpected dinuclear complex [{Cp'''Ni}2 (μ,η3 :η1 :η1 -P4 Br3 )][TEF] (3 a). A similar product [{Cp'''Ni}2 (μ,η3 :η1 :η1 -P4 (2,2'-biphen)Cl)][GaCl4 ] (3 b) is obtained, when 2 d[GaCl4 ] is kept in solution for prolonged times. Although the central structural motif of 2 a-g consists of a "butterfly-like" folded P4 ring attached to a {Cp'''Ni} fragment, the structures of 3 a and 3 b exhibit a unique asymmetrically substituted and distorted P4 chain stabilised by two {Cp'''Ni} fragments. Additional DFT calculations shed light on the reaction pathway for the formation of 2 a-2 g and the bonding situation in 3 a.
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Affiliation(s)
- Christoph Riesinger
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | - Luis Dütsch
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | - Gábor Balázs
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | | | - Manfred Scheer
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
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12
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Riedlberger F, Todisco S, Mastrorilli P, Timoshkin AY, Seidl M, Scheer M. NHCs as Neutral Donors towards Polyphosphorus Complexes. Chemistry 2020; 26:16251-16255. [PMID: 32745336 PMCID: PMC7756228 DOI: 10.1002/chem.202003393] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Indexed: 12/16/2022]
Abstract
The first adducts of NHCs (=N‐heterocyclic carbenes) with aromatic polyphosphorus complexes are reported. The reactions of [Cp*Fe(η5‐P5)] (1) (Cp*=pentamethyl‐cyclopentadienyl) with IMe (=1,3,4,5‐tetramethylimidazolin‐2‐ylidene), IMes (=1,3‐bis(2,4,6‐trimethylphenyl)‐imidazolin‐2‐ylidene) and IDipp (=1,3‐bis(2,6‐diisopropylphenyl)‐imidazolin‐2‐ylidene) led to the corresponding neutral adducts which can be isolated in the solid state. However, in solution, they quickly undergo a dissociative equilibrium between the adduct and 1 including the corresponding NHC. The equilibrium is influenced by the bulkiness of the NHC. [Cp′′Ta(CO)2(η4‐P4)] (Cp′′=1,3‐di‐tert‐butylcyclopentadienyl) reacts with IMe under P atom abstraction to give an unprecedented cyclo‐P3‐containing anionic tantalum complex. DFT calculations shed light onto the energetics of the reaction pathways.
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Affiliation(s)
- Felix Riedlberger
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Stefano Todisco
- Dipartimento di Ingeneria Civile, Ambientale, del Territorito Edile e di Chimica (DICATECh), Politecnico di Bari, Via Orabona 4, 70125, Bari, Italy
| | - Piero Mastrorilli
- Dipartimento di Ingeneria Civile, Ambientale, del Territorito Edile e di Chimica (DICATECh), Politecnico di Bari, Via Orabona 4, 70125, Bari, Italy
| | - Alexey Y Timoshkin
- Institute of Chemistry, St. Petersburg State University, Universitetskaya nab. 7/9, 199034, St. Petersburg, Russia
| | - Michael Seidl
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
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13
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Yadav R, Simler T, Goswami B, Schoo C, Köppe R, Dey S, Roesky PW. Regioselective Insertion of Aluminum(I) in the cyclo-P 5 Ring of Pentaphosphaferrocene. Angew Chem Int Ed Engl 2020; 59:9443-9447. [PMID: 32187800 PMCID: PMC7318284 DOI: 10.1002/anie.202002774] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Indexed: 11/06/2022]
Abstract
A route to directly access mixed Al-Fe polyphosphide complexes was developed. The reactivity of pentaphosphaferrocene, [Cp*Fe(η5 -P5 )] (Cp*=C5 Me5 ), with two different low-valent aluminum compounds was investigated. The steric and electronic environment around the [AlI ] centre are found to be crucial for the formation of the resulting Al-Fe polyphosphides. Reaction with the sterically demanding [Dipp-BDIAlI ] (Dipp-BDI={[2,6-i Pr2 C6 H3 NCMe]2 CH}- ) resulted in the first Al-based neutral triple-decker type polyphosphide complex. For [(Cp*AlI )4 ], an unprecedented regioselective insertion of three [Cp*AlIII ]2+ moieties into two adjacent P-P bonds of the cyclo-P5 ring of [Cp*Fe(η5 -P5 )] was observed. The regioselectivity of the insertion reaction could be rationalized by isolating an analogue of the reaction intermediate stabilized by a strong σ-donor carbene.
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Affiliation(s)
- Ravi Yadav
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstrasse 1576131KarlsruheGermany
| | - Thomas Simler
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstrasse 1576131KarlsruheGermany
| | - Bhupendra Goswami
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstrasse 1576131KarlsruheGermany
| | - Christoph Schoo
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstrasse 1576131KarlsruheGermany
| | - Ralf Köppe
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstrasse 1576131KarlsruheGermany
| | - Subhayan Dey
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstrasse 1576131KarlsruheGermany
| | - Peter W. Roesky
- Institute of Inorganic ChemistryKarlsruhe Institute of Technology (KIT)Engesserstrasse 1576131KarlsruheGermany
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14
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Yadav R, Simler T, Goswami B, Schoo C, Köppe R, Dey S, Roesky PW. Regioselektive Insertion von Aluminium(I) in den
cyclo
‐P
5
‐Ring von Pentaphosphaferrocen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002774] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ravi Yadav
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT) Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Thomas Simler
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT) Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Bhupendra Goswami
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT) Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Christoph Schoo
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT) Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Ralf Köppe
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT) Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Subhayan Dey
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT) Engesserstraße 15 76131 Karlsruhe Deutschland
| | - Peter W. Roesky
- Institut für Anorganische ChemieKarlsruher Institut für Technologie (KIT) Engesserstraße 15 76131 Karlsruhe Deutschland
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15
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Piesch M, Graßl C, Scheer M. Element-Element Bond Formation upon Oxidation and Reduction. Angew Chem Int Ed Engl 2020; 59:7154-7160. [PMID: 32017349 PMCID: PMC7216884 DOI: 10.1002/anie.201916622] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 01/28/2020] [Indexed: 11/26/2022]
Abstract
The redox chemistry of [(Cp′′′Co)2(μ,η2:η2‐E2)2] (E=P (1), As (2); Cp′′′=1,2,4‐tri(tert‐butyl)cyclopentadienyl) was investigated. Both compounds can be oxidized and reduced twice. That way, the monocations [(Cp′′′Co)2(μ,η4:η4‐E4)][X] (E=P, X=BF4 (3 a), [FAl] (3 b); E=As, X=BF4 (4 a), [FAl] (4 b)), the dications [(Cp′′′Co)2(μ,η4:η4‐E4)][TEF]2 (E=P (5), As (6)), and the monoanions [K(18‐c‐6)(dme)2][(Cp′′′Co)2(μ,η4:η4‐E4)] (E=P (7), As (8)) were isolated. Further reduction of 7 leads to the dianionic complex [K(18‐c‐6)(dme)2][K(18‐c‐6)][(Cp′′′Co)2(μ,η3:η3‐P4)] (9), in which the cyclo‐P4 ligand has rearranged to a chain‐like P4 ligand. Further reduction of 8 can be achieved with an excess of potassium under the formation of [K(dme)4][(Cp′′′Co)2(μ,η3:η3‐As3)] (10) and the elimination of an As1 unit. Compound 10 represents the first example of an allylic As3 ligand incorporated into a triple‐decker complex.
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Affiliation(s)
- Martin Piesch
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Christian Graßl
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93040, Regensburg, Germany
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16
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Piesch M, Graßl C, Scheer M. Element‐Element‐Bindungsbildung durch Oxidation und Reduktion. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916622] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Martin Piesch
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Christian Graßl
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Manfred Scheer
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
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17
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Adhikari AK, Ziegler CGP, Schwedtmann K, Taube C, Weigand JJ, Wolf R. Functionalization of Pentaphosphorus Cations by Complexation. Angew Chem Int Ed Engl 2019; 58:18584-18590. [PMID: 31559678 PMCID: PMC6916545 DOI: 10.1002/anie.201908998] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 09/24/2019] [Indexed: 12/27/2022]
Abstract
The chemistry of polyphosphorus cations has rapidly developed in recent years, but their coordination behavior has remained mostly unexplored. Herein, we describe the reactivity of [P5 R2 ]+ cations with cyclopentadienyl metal complexes. The reaction of [CpAr Fe(μ-Br)]2 (CpAr =C5 (C6 H4 -4-Et)5 ) with [P5 R2 ][GaCl4 ] (R=iPr and 2,4,6-Me3 C6 H2 (Mes)) afforded bicyclo[1.1.0]pentaphosphanes (1-R, R=iPr and Mes), showing an unsymmetric "butterfly" structure. The same products 1-R were formed from K[CpAr ] and [P5 R2 ][GaCl4 ]. The cationic complexes [CpAr Co(η4 -P5 R2 )][GaCl4 ] (2-R[GaCl4 ], R=iPr and Cy) and [(CpAr Ni)2 (η3:3 -P5 R2 )][GaCl4 ] (3-R[GaCl4 ]) were obtained from [P5 R2 ][GaCl4 ] and [CpAr M(μ-Br)]2 (M=Co and Ni) as well as by using low-valent "CpAr MI " sources. Anion metathesis of 2-R[GaCl4 ] and 3-R[GaCl4 ] was achieved with Na[BArF24 ]. The P5 framework of the resulting salts 2-R[BArF24 ] can be further functionalized with nucleophiles. Thus reactions with [Et4 N]X (X=CN and Cl) give unprecedented cyano- and chloro-functionalized complexes, while organo-functionalization was achieved with CyMgCl.
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Affiliation(s)
- Anup K. Adhikari
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | | | - Kai Schwedtmann
- Faculty of Chemistry and Food ChemistryTU Dresden01062DresdenGermany
| | - Clemens Taube
- Faculty of Chemistry and Food ChemistryTU Dresden01062DresdenGermany
| | - Jan. J. Weigand
- Faculty of Chemistry and Food ChemistryTU Dresden01062DresdenGermany
| | - Robert Wolf
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
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18
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Adhikari AK, Ziegler CGP, Schwedtmann K, Taube C, Weigand JJ, Wolf R. Functionalization of Pentaphosphorus Cations by Complexation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908998] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Anup K. Adhikari
- Institute of Inorganic ChemistryUniversity of Regensburg 93040 Regensburg Germany
| | | | - Kai Schwedtmann
- Faculty of Chemistry and Food ChemistryTU Dresden 01062 Dresden Germany
| | - Clemens Taube
- Faculty of Chemistry and Food ChemistryTU Dresden 01062 Dresden Germany
| | - Jan. J. Weigand
- Faculty of Chemistry and Food ChemistryTU Dresden 01062 Dresden Germany
| | - Robert Wolf
- Institute of Inorganic ChemistryUniversity of Regensburg 93040 Regensburg Germany
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19
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Dütsch L, Fleischmann M, Welsch S, Balázs G, Kremer W, Scheer M. Dicationic E4
Chains (E=P, As, Sb, Bi) Embedded in the Coordination Sphere of Transition Metals. Angew Chem Int Ed Engl 2018; 57:3256-3261. [DOI: 10.1002/anie.201712884] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Luis Dütsch
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Martin Fleischmann
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Stefan Welsch
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Gábor Balázs
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Werner Kremer
- Institute of Biophysics and Physical Biochemistry; University of Regensburg; Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
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20
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Dütsch L, Fleischmann M, Welsch S, Balázs G, Kremer W, Scheer M. Dikationische E4
-Ketten (E=P, As, Sb, Bi) eingebettet in der Koordinationssphäre von Übergangsmetallen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712884] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Luis Dütsch
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Deutschland
| | - Martin Fleischmann
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Deutschland
| | - Stefan Welsch
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Deutschland
| | - Gábor Balázs
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Deutschland
| | - Werner Kremer
- Institut für Biophysik und Physikalische Biochemie; Universität Regensburg; Deutschland
| | - Manfred Scheer
- Institut für Anorganische Chemie; Universität Regensburg; 93040 Regensburg Deutschland
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21
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Peresypkina E, Heindl C, Virovets A, Brake H, Mädl E, Scheer M. Anionic Hosts for the Incorporation of Cationic Guests. Chemistry 2018; 24:2503-2508. [PMID: 29236336 PMCID: PMC5947592 DOI: 10.1002/chem.201705883] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Indexed: 11/07/2022]
Abstract
Pentaphosphaferrocene [Cp*Fe(η5 -P5 )] (1 a) represents an excellent building block for the template-directed synthesis of spherical supramolecules. Here, the self-assembly of 1 a with CuI and CuII halides in the presence of the template complexes [FeCp2 ][PF6 ], [CoCp2 ][PF6 ] and [CoCp2 ] is reported, testifying to the redox behavior of the formed supramolecules. The oxidation or reduction capacity of these reactive complexes does not inhibit their template impact and, for the first time, the cationic metallocene [CoCp2 ]+ is enclosed in unprecedented anionic organometallic hosts. Furthermore, the large variety of structural motifs, as icosahedral, trigonal antiprismatic, cuboidal and tetragonal antiprismatic arrangements of 1 a units are realized in the supramolecules [FeCp2 ]@[{1 a}12 (CuBr)17.3 ] (3), [CoCp2 ]+3 {[CoCp2 ]+ @[{1 a}8 Cu24.25 Br28.25 (CH3 CN)6 ]4- } (4), {[Cp2 Co]+ @[{1 a}8 (CuI)28 (CH3 CN)9.8 ]}{[Cp2 Co]+ @[{1 a)}8 Cu24.4 I26.4 (CH3 CN)8 ]2- } (5), and [{1 a}3 {(1 a)2 NH}3 Cu16 I10 (CH3 CN)7 ] (6), respectively.
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Affiliation(s)
- Eugenia Peresypkina
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
- Nikolaev Institute of Inorganic ChemistrySiberian Division of RASAcad. Lavrentyev Straße 3630090NovosibirskRussia
| | - Claudia Heindl
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Alexander Virovets
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
- Nikolaev Institute of Inorganic ChemistrySiberian Division of RASAcad. Lavrentyev Straße 3630090NovosibirskRussia
| | - Helena Brake
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Eric Mädl
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
| | - Manfred Scheer
- Institut für Anorganische ChemieUniversität Regensburg93040RegensburgGermany
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22
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Schmidt M, Konieczny D, Peresypkina EV, Virovets AV, Balázs G, Bodensteiner M, Riedlberger F, Krauss H, Scheer M. Arsenic-Rich Polyarsenides Stabilized by Cp*Fe Fragments. Angew Chem Int Ed Engl 2017; 56:7307-7311. [PMID: 28508464 DOI: 10.1002/anie.201702903] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Indexed: 11/09/2022]
Abstract
The redox chemistry of [Cp*Fe(η5 -As5 )] (1, Cp*=η5 -C5 Me5 ) has been investigated by cyclic voltammetry, revealing a redox behavior similar to that of its lighter congener [Cp*Fe(η5 -P5 )]. However, the subsequent chemical reduction of 1 by KH led to the formation of a mixture of novel Asn scaffolds with n up to 18 that are stabilized only by [Cp*Fe] fragments. These include the arsenic-poor triple-decker complex [K(dme)2 ][{Cp*Fe(μ,η2:2 -As2 )}2 ] (2) and the arsenic-rich complexes [K(dme)3 ]2 [(Cp*Fe)2 (μ,η4:4 -As10 )] (3), [K(dme)2 ]2 [(Cp*Fe)2 (μ,η2:2:2:2 -As14 )] (4), and [K(dme)3 ]2 [(Cp*Fe)4 (μ4 ,η4:3:3:2:2:1:1 -As18 )] (5). Compound 4 and the polyarsenide complex 5 are the largest anionic Asn ligand complexes reported thus far. Complexes 2-5 were characterized by single-crystal X-ray diffraction, 1 H NMR spectroscopy, EPR spectroscopy (2), and mass spectrometry. Furthermore, DFT calculations showed that the intermediate [Cp*Fe(η5 -As5 )]- , which is presumably formed first, undergoes fast dimerization to the dianion [(Cp*Fe)2 (μ,η4:4 -As10 )]2- .
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Affiliation(s)
- Monika Schmidt
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - David Konieczny
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Eugenia V Peresypkina
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany.,Nikolaev Institute of Inorganic Chemistry SB RAS, Ak. Lavrentiev prosp. 3, 630090, Novosibirsk, Russia.,Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia
| | - Alexander V Virovets
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany.,Nikolaev Institute of Inorganic Chemistry SB RAS, Ak. Lavrentiev prosp. 3, 630090, Novosibirsk, Russia.,Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia
| | - Gabor Balázs
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Michael Bodensteiner
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Felix Riedlberger
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Hannes Krauss
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, Universitätsstrasse 31, 93053, Regensburg, Germany
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23
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Schmidt M, Konieczny D, Peresypkina EV, Virovets AV, Balázs G, Bodensteiner M, Riedlberger F, Krauss H, Scheer M. Durch Cp*Fe-Fragmente stabilisierte, Arsen-reiche Polyarsenide. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702903] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Monika Schmidt
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - David Konieczny
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Eugenia V. Peresypkina
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
- Nikolaev Institute of Inorganic Chemistry SB RAS; Ak. Lavrentiev prosp. 3 630090 Novosibirsk Russland
- Novosibirsk State University, Pirogova str. 2; 630090 Novosibirsk Russland
| | - Alexander V. Virovets
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
- Nikolaev Institute of Inorganic Chemistry SB RAS; Ak. Lavrentiev prosp. 3 630090 Novosibirsk Russland
- Novosibirsk State University, Pirogova str. 2; 630090 Novosibirsk Russland
| | - Gabor Balázs
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Michael Bodensteiner
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Felix Riedlberger
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Hannes Krauss
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
| | - Manfred Scheer
- Institut für Anorganische Chemie; Universität Regensburg; Universitätsstraße 31 93053 Regensburg Deutschland
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24
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Fleischmann M, Dielmann F, Balázs G, Scheer M. Oxidation Chemistry of Inorganic Benzene Complexes. Chemistry 2016; 22:15248-15251. [DOI: 10.1002/chem.201603530] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Martin Fleischmann
- Department of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Fabian Dielmann
- Department of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Gábor Balázs
- Department of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Manfred Scheer
- Department of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
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25
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Pelties S, Maier T, Herrmann D, de Bruin B, Rebreyend C, Gärtner S, Shenderovich IG, Wolf R. Selective P4
Activation by a Highly Reduced Cobaltate: Synthesis of Dicobalt Tetraphosphido Complexes. Chemistry 2016; 23:6094-6102. [DOI: 10.1002/chem.201603296] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Stefan Pelties
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Thomas Maier
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Dirk Herrmann
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Bas de Bruin
- Van ‘t Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 9747 AG Groningen Netherlands
| | - Christophe Rebreyend
- Van ‘t Hoff Institute for Molecular Sciences; University of Amsterdam; Science Park 904 9747 AG Groningen Netherlands
| | - Stefanie Gärtner
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Ilya G. Shenderovich
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
| | - Robert Wolf
- Institute of Inorganic Chemistry; University of Regensburg; 93040 Regensburg Germany
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26
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Mädl E, Balázs G, Peresypkina EV, Scheer M. Unerwartete Reaktivität von [(η5-1,2,4-tBu3C5H2)Ni(η3-P3)] gegenüber Hauptgruppen-Nucleophilen und durch Reduktion. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601775] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eric Mädl
- Institut für Anorganische Chemie; Universität Regensburg; 93051 Regensburg Deutschland
| | - Gábor Balázs
- Institut für Anorganische Chemie; Universität Regensburg; 93051 Regensburg Deutschland
| | - Eugenia V. Peresypkina
- Nikolaev Institute of Inorganic Chemistry; Siberian Division of RAS; Acad. Lavrentyev str. 3 630090 Novosibirsk Russland
- Novosibirsk State University; Pirogova str. 2 630090 Novosibirsk Russland
| | - Manfred Scheer
- Institut für Anorganische Chemie; Universität Regensburg; 93051 Regensburg Deutschland
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27
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Mädl E, Balázs G, Peresypkina EV, Scheer M. Unexpected Reactivity of [(η(5) -1,2,4-tBu3 C5 H2 )Ni(η(3) -P3 )] towards Main Group Nucleophiles and by Reduction. Angew Chem Int Ed Engl 2016; 55:7702-7. [PMID: 27097602 DOI: 10.1002/anie.201601775] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Indexed: 11/11/2022]
Abstract
The reduction of [Cp'''Ni(η(3) -P3 )] (1; Cp'''=η(5) -1,2,4-tBu3 C5 H2 ) with potassium produces the complex anion [(Cp'''Ni)2 (μ,η(2:2) -P8 )](2-) (2), which contains a realgar-like P8 unit. The anionic triple-decker sandwich complex [(Cp'''Ni)2 (μ,η(3:3) -P3 )](-) (3) with a cyclo-P3 middle deck is obtained when 1 is treated with NaNH2 as a nucleophile. Na[3] can subsequently be oxidized with AgOTf to the neutral triple-decker complex [(Cp'''Ni)2 (μ,η(3:3) -P3 )] (4). In contrast, 1 reacts with LiPPh2 to give the anionic compound [(Cp'''Ni)2 (μ,η(2:2) -P6 PPh2 )](-) (5), a complex containing a bicyclic P7 fragment capped by two Cp'''Ni units. Protonation of Li[5] with HBF4 leads to the neutral complex [(Cp'''Ni)2 (μ,η(2:2) -(HP6 PPh2 )] (6). Adding LiNMe2 to 1 results in [Cp'''Ni(η(2) -P3 NMe2 )](-) (7) becoming accessible, a complex which forms as a result of nucleophilic attack at the cyclo-P3 ring of 1. The complexes K2 [2], Na[3], 4, 6, and Li[7] were fully characterized and their structures determined by single-crystal X-ray diffraction.
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Affiliation(s)
- Eric Mädl
- Institut für Anorganische Chemie, Universität Regensburg, 93051, Regensburg, Germany
| | - Gábor Balázs
- Institut für Anorganische Chemie, Universität Regensburg, 93051, Regensburg, Germany
| | - Eugenia V Peresypkina
- Nikolaev Institute of Inorganic Chemistry, Siberian Division of RAS, Acad. Lavrentyev str. 3, 630090, Novosibirsk, Russia.,Novosibirsk State University, Pirogova str. 2, 630090, Novosibirsk, Russia
| | - Manfred Scheer
- Institut für Anorganische Chemie, Universität Regensburg, 93051, Regensburg, Germany.
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Gardner BM, Tuna F, McInnes EJL, McMaster J, Lewis W, Blake AJ, Liddle ST. An Inverted-Sandwich Diuranium μ-η 5:η 5-Cyclo-P 5 Complex Supported by U-P 5 δ-Bonding. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 127:7174-7178. [PMID: 27478265 PMCID: PMC4955234 DOI: 10.1002/ange.201501728] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 03/13/2015] [Indexed: 11/24/2022]
Abstract
Reaction of [U(TrenTIPS)] [1, TrenTIPS=N(CH2CH2NSiiPr3)3] with 0.25 equivalents of P4 reproducibly affords the unprecedented actinide inverted sandwich cyclo-P5 complex [{U(TrenTIPS)}2(μ-η5:η5-cyclo-P5)] (2). All prior examples of cyclo-P5 are stabilized by d-block metals, so 2 shows that cyclo-P5 does not require d-block ions to be prepared. Although cyclo-P5 is isolobal to cyclopentadienyl, which usually bonds to metals via σ- and π-interactions with minimal δ-bonding, theoretical calculations suggest the principal bonding in the U(P5)U unit is polarized δ-bonding. Surprisingly, the characterization data are overall consistent with charge transfer from uranium to the cyclo-P5 unit to give a cyclo-P5 charge state that approximates to a dianionic formulation. This is ascribed to the larger size and superior acceptor character of cyclo-P5 compared to cyclopentadienyl, the strongly reducing nature of uranium(III), and the availability of uranium δ-symmetry 5f orbitals.
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Affiliation(s)
- Benedict M. Gardner
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
| | - Floriana Tuna
- School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
| | - Eric J. L. McInnes
- School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
| | - Jonathan McMaster
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
| | - Alexander J. Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
| | - Stephen T. Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
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Gardner BM, Tuna F, McInnes EJL, McMaster J, Lewis W, Blake AJ, Liddle ST. An Inverted-Sandwich Diuranium μ-η(5):η(5)-Cyclo-P5 Complex Supported by U-P5 δ-Bonding. Angew Chem Int Ed Engl 2015; 54:7068-72. [PMID: 25914060 PMCID: PMC4517156 DOI: 10.1002/anie.201501728] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 03/13/2015] [Indexed: 11/19/2022]
Abstract
Reaction of [U(TrenTIPS)] [1, TrenTIPS=N(CH2CH2NSiiPr3)3] with 0.25 equivalents of P4 reproducibly affords the unprecedented actinide inverted sandwich cyclo-P5 complex [{U(TrenTIPS)}2(μ-η5:η5-cyclo-P5)] (2). All prior examples of cyclo-P5 are stabilized by d-block metals, so 2 shows that cyclo-P5 does not require d-block ions to be prepared. Although cyclo-P5 is isolobal to cyclopentadienyl, which usually bonds to metals via σ- and π-interactions with minimal δ-bonding, theoretical calculations suggest the principal bonding in the U(P5)U unit is polarized δ-bonding. Surprisingly, the characterization data are overall consistent with charge transfer from uranium to the cyclo-P5 unit to give a cyclo-P5 charge state that approximates to a dianionic formulation. This is ascribed to the larger size and superior acceptor character of cyclo-P5 compared to cyclopentadienyl, the strongly reducing nature of uranium(III), and the availability of uranium δ-symmetry 5f orbitals.
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Affiliation(s)
- Benedict M Gardner
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
| | - Floriana Tuna
- School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
| | - Eric J L McInnes
- School of Chemistry and Photon Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL (UK)
| | - Jonathan McMaster
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
| | - William Lewis
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
| | - Alexander J Blake
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK)
| | - Stephen T Liddle
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD (UK).
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Mädl E, Butovskii MV, Balázs G, Peresypkina EV, Virovets AV, Seidl M, Scheer M. Functionalization of a cyclo-P₅ ligand by main-group element nucleophiles. Angew Chem Int Ed Engl 2014; 53:7643-6. [PMID: 24895298 DOI: 10.1002/anie.201403581] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Indexed: 11/08/2022]
Abstract
Unprecedented functionalized products with an η(4)-P5 ring are obtained by the reaction of [Cp*Fe(η(5)-P5)] (1; Cp*=η(5)-C5Me5) with different nucleophiles. With LiCH2SiMe3 and LiNMe2, the monoanionic products [Cp*Fe(η(4)-P5CH2SiMe3)](-) and [Cp*Fe(η(4)-P5NMe2)](-), respectively, are formed. The reaction of 1 with NaNH2 leads to the formation of the trianionic compound [{Cp*Fe(η(4)-P5)}2N](3-), whereas the reaction with LiPH2 yields [Cp*Fe(η(4)-P5PH2)](-) as the main product, with {[Cp*Fe(η(4)-P5)]2PH}(2-) as a byproduct. The calculated energy profile of the reactions provides a rationale for the formation of the different products.
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Affiliation(s)
- Eric Mädl
- University of Regensburg, Institut für Anorganische Chemie, 93040 Regensburg (Germany)
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Mädl E, Butovskii MV, Balázs G, Peresypkina EV, Virovets AV, Seidl M, Scheer M. Funktionalisierung einescyclo-P5-Liganden durch Hauptgruppenelement-Nukleophile. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403581] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Gesellschaft Deutscher Chemiker Prizes: K. Müllen, A. Fürstner, L. F. Nazar, M. Scheer, T. C. Schmidt, R. E. Mulvey, B. Rieger, H. L. Anderson, A. Llobet. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/anie.201304802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Preise der Gesellschaft Deutscher Chemiker: K. Müllen, A. Fürstner, L. F. Nazar, M. Scheer, T. C. Schmidt, R. E. Mulvey, B. Rieger, H. L. Anderson, A. Llobet. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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