1
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Garbagnati A, Piesch M, Seidl M, Balázs G, Scheer M. Halogenation and Nucleophilic Quenching: Two Routes to E-X Bond Formation in Cobalt Triple-Decker Complexes (E=As, P; X=F, Cl, Br, I). Chemistry 2022; 28:e202201026. [PMID: 35575044 PMCID: PMC9400891 DOI: 10.1002/chem.202201026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Indexed: 11/29/2022]
Abstract
The oxidation of [(Cp'''Co)2 (μ,η2 : η2 -E2 )2 ] (E=As (1), P (2); Cp'''=1,2,4-tri(tert-butyl)cyclopentadienyl) with halogens or halogen sources (I2 , PBr5 , PCl5 ) was investigated. For the arsenic derivative, the ionic compounds [(Cp'''Co)2 (μ,η4 : η4 -As4 X)][Y] (X=I, Y=[As6 I8 ]0.5 (3 a), Y=[Co2 Cl6-n In ]0.5 (n=0, 2, 4; 3 b); X=Br, Y=[Co2 Br6 ]0.5 (4); X=Cl, Y=[Co2 Cl6 ]0.5 (5)) were isolated. The oxidation of the phosphorus analogue 2 with bromine and chlorine sources yielded the ionic complexes [(Cp'''Co)2 (μ-PBr2 )2 (μ-Br)][Co2 Br6 ]0.5 (6 a), [(Cp'''Co)2 (μ-PCl2 )2 (μ-Cl)][Co2 Cl6 ]0.5 (6 b) and the neutral species [(Cp'''Co)2 (μ-PCl2 )(μ-PCl)(μ,η1 : η1 -P2 Cl3 ] (7), respectively. As an alternative approach, quenching of the dications [(Cp'''Co)2 (μ,η4 : η4 -E4 )][TEF]2 (TEF=[Al{OC(CF3 )3 }4 ]- , E=As (8), P (9)) with KI yielded [(Cp'''Co)2 (μ,η4 : η4 -As4 I)][I] (10), representing the homologue of 3, and the neutral complex [(Cp'''Co)(Cp'''CoI2 )(μ,η4 : η1 -P4 )] (11), respectively. The use of [(CH3 )4 N]F instead of KI leads to the formation of [(Cp'''Co)2 (μ-PF2 )(μ,η2 : η1 : η1 -P3 F2 )] (12) and 2, thereby revealing synthetic access to polyphosphorus compounds bearing P-F groups and avoiding the use of very strong fluorinating reagents, such as XeF2 , that are difficult to control.
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Affiliation(s)
- Anna Garbagnati
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | - Martin Piesch
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | - Michael Seidl
- 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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2
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Garbagnati A, Seidl M, Balázs G, Scheer M. Halogenation of the Hexaphosphabenzene Complex [(Cp*Mo) 2 (μ,η 6 :η 6 -P 6 )]: Snapshots on the Reaction Progress. Chemistry 2022; 28:e202200669. [PMID: 35348263 PMCID: PMC9321898 DOI: 10.1002/chem.202200669] [Citation(s) in RCA: 1] [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: 03/02/2022] [Indexed: 12/16/2022]
Abstract
The oxidation of [(Cp*Mo)2 (μ,η6 :η6 -P6 )] (1) with halogens or halogen sources was investigated. The iodination afforded the ionic complexes [(Cp*Mo)2 (μ,η3 :η3 -P3 )(μ,η1 :η1 :η1 :η1 -P3 I3 )][X] (X=I3 - , I- ) (2) and [(Cp*Mo)2 (μ,η4 :η4 -P4 )(μ-PI2 )][I3 ] (3), while the reaction with PBr5 led to the complexes [(Cp*Mo)2 (μ,η3 :η3 -P3 )(μ-Br)2 ][Cp*MoBr4 ] (4) [(Cp*MoBr)2 (μ,η3 :η3 -P3 )(μ,η1 -P2 Br3 )] (5) and [(Cp*Mo)2 (μ-PBr2 )(μ-PHBr)(μ-Br)2 ] (6). The reaction of 1 with the far stronger oxidizing agent PCl5 was followed via time- and temperature-dependent 31 P{1 H} NMR spectroscopy. One of the first intermediates detected at 193 K was [(Cp*Mo)2 (μ,η3 :η3 -P3 )(μ-PCl2 )2 ][PCl6 ] (8) which rearranges upon warming to [(Cp*Mo)2 (μ-PCl2 )2 (μ-Cl)2 ] (9), [(Cp*MoCl)2 (μ,η3 :η3 -P3 )(μ-PCl2 )] (10) and [(Cp*Mo)2 (μ,η4 :η4 -P4 )(μ-PCl2 )][Cp*MoCl4 ] (11), which could be isolated at room temperature. All complexes were characterized by single-crystal X-ray diffraction, NMR spectroscopy and their electronic structures were elucidated by DFT calculations.
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Affiliation(s)
- Anna Garbagnati
- Institute of Inorganic ChemistryUniversity of Regensburg93040RegensburgGermany
| | - Michael Seidl
- 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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3
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Garbagnati A, Seidl M, Piesch M, Balázs G, Scheer M. Halogenation of heterobimetallic triple-decker complexes containing an E5 middle deck (E = P, As). Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Riesinger C, Balázs G, Seidl M, Scheer M. Substituted aromatic pentaphosphole ligands - a journey across the p-block. Chem Sci 2021; 12:13037-13044. [PMID: 34745534 PMCID: PMC8513863 DOI: 10.1039/d1sc04296c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/03/2021] [Indexed: 01/22/2023] Open
Abstract
The functionalization of pentaphosphaferrocene [Cp*Fe(η5-P5)] (1) with cationic group 13-17 electrophiles is shown to be a general synthetic strategy towards P-E bond formation of unprecedented diversity. The products of these reactions are dinuclear [{Cp*Fe}2{μ,η5:5-(P5)2EX2}][TEF] (EX2 = BBr2 (2), GaI2 (3), [TEF]- = [Al{OC(CF3)3}4]-) or mononuclear [Cp*Fe(η5-P5E)][X] (E = CH2Ph (4), CHPh2 (5), SiHPh2 (6), AsCy2 (7), SePh (9), TeMes (10), Cl (11), Br (12), I (13)) complexes of hetero-bis-pentaphosphole ((cyclo-P5)2R) or hetero-pentaphosphole ligands (cyclo-P5R), the aromatic all-phosphorus analogs of prototypical cyclopentadienes. Further, modifying the steric and electronic properties of the electrophile has a drastic impact on its reactivity and leads to the formation of [Cp*Fe(μ,η5:2-P5)SbICp'''][TEF] (8) which possesses a triple-decker-like structure. X-ray crystallographic characterization reveals the slightly twisted conformation of the cyclo-P5R ligands in these compounds and multinuclear NMR spectroscopy confirms their integrity in solution. DFT calculations shed light on the bonding situation of these compounds and confirm the aromatic character of the pentaphosphole ligands on a journey across the p-block.
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Affiliation(s)
- Christoph Riesinger
- Institute of Inorganic Chemistry, University of Regensburg 93040 Regensburg Germany
| | - Gábor Balázs
- Institute of Inorganic Chemistry, University of Regensburg 93040 Regensburg Germany
| | - Michael Seidl
- Institute of Inorganic Chemistry, University of Regensburg 93040 Regensburg Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg 93040 Regensburg Germany
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5
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Giusti L, Landaeta VR, Vanni M, Kelly JA, Wolf R, Caporali M. Coordination chemistry of elemental phosphorus. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213927] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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6
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Abstract
A systematic study of diverse halogenation reactions of the tetrahedral Mo2P2 ligand complex [{CpMo(CO)2}2(μ,η2:η2-P2)] (1) is reported. By reacting 1 with different halogenating agents, a series of complexes such as [(CpMo)4(μ4-P)(μ3-PI)2(μ-I)(I)3(I3)] (2), [{CpMo(CO)2}2(μ-PBr2)2] (3a), [{CpMo(CO)2}(CpMoBr2)(μ-PBr2)2] (4a), [{CpMo(CO)2}2(μ-PCl2)2] (3b), and [{CpMo(CO)2}(CpMoCl2)(μ-PCl2)2] (4b) were obtained. Whereas the reaction of 1 toward various bromine and chlorine sources leads to similar results, a different behavior is observed in the reaction with iodine in which 2 is formed. The products were comprehensively characterized by spectroscopic methods and single crystal X-ray diffraction, and the electronic structures of 2, 3a, and 4a were elucidated by DFT calculations.
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Affiliation(s)
- Anna Garbagnati
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Michael Seidl
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Gábor Balázs
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
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7
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Manca G, Ienco A. Iodine-induced stepwise reactivity of coordinated white phosphorus: A mechanistic overview. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Hoidn CM, Scott DJ, Wolf R. Transition-Metal-Mediated Functionalization of White Phosphorus. Chemistry 2021; 27:1886-1902. [PMID: 33135828 PMCID: PMC7894350 DOI: 10.1002/chem.202001854] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Indexed: 12/13/2022]
Abstract
Recently there has been great interest in the reactivity of transition-metal (TM) centers towards white phosphorus (P4 ). This has ultimately been motivated by a desire to find TM-mediated alternatives to the current industrial routes used to transform P4 into myriad useful P-containing products, which are typically indirect, wasteful, and highly hazardous. Such a TM-mediated process can be divided into two steps: activation of P4 to generate a polyphosphorus complex TM-Pn , and subsequent functionalization of this complex to release the desired phosphorus-containing product. The former step has by now become well established, allowing the isolation of many different TM-Pn products. In contrast, productive functionalization of these complexes has proven extremely challenging and has been achieved only in a relative handful of cases. In this review we provide a comprehensive summary of successful TM-Pn functionalization reactions, where TM-Pn must be accessible by reaction of a TM precursor with P4 . We hope that this will provide a useful resource for continuing efforts that are working towards this highly challenging goal of modern synthetic chemistry.
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Affiliation(s)
- Christian M. Hoidn
- University of RegensburgInstitute of Inorganic Chemistry93040RegensburgGermany
| | - Daniel J. Scott
- University of RegensburgInstitute of Inorganic Chemistry93040RegensburgGermany
| | - Robert Wolf
- University of RegensburgInstitute of Inorganic Chemistry93040RegensburgGermany
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9
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Brake H, Peresypkina E, Virovets AV, Piesch M, Kremer W, Zimmermann L, Klimas C, Scheer M. Iodination of cyclo-E 5 -Complexes (E=P, As). Angew Chem Int Ed Engl 2020; 59:16241-16246. [PMID: 32463937 PMCID: PMC7540426 DOI: 10.1002/anie.202004812] [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: 04/02/2020] [Revised: 05/26/2020] [Indexed: 02/04/2023]
Abstract
In a high‐yield one‐pot synthesis, the reactions of [Cp*M(η5‐P5)] (M=Fe (1), Ru (2)) with I2 resulted in the selective formation of [Cp*MP6I6]+ salts (3, 4). The products comprise unprecedented all‐cis tripodal triphosphino‐cyclotriphosphine ligands. The iodination of [Cp*Fe(η5‐As5)] (6) gave, in addition to [Fe(CH3CN)6]2+ salts of the rare [As6I8]2− (in 7) and [As4I14]2− (in 8) anions, the first di‐cationic Fe‐As triple decker complex [(Cp*Fe)2(μ,η5:5‐As5)][As6I8] (9). In contrast, the iodination of [Cp*Ru(η5‐As5)] (10) did not result in the full cleavage of the M−As bonds. Instead, a number of dinuclear complexes were obtained: [(Cp*Ru)2(μ,η5:5‐As5)][As6I8]0.5 (11) represents the first Ru‐As5 triple decker complex, thus completing the series of monocationic complexes [(CpRM)2(μ,η5:5‐E5)]+ (M=Fe, Ru; E=P, As). [(Cp*Ru)2As8I6] (12) crystallizes as a racemic mixture of both enantiomers, while [(Cp*Ru)2As4I4] (13) crystallizes as a symmetric and an asymmetric isomer and features a unique tetramer of {AsI} arsinidene units as a middle deck.
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Affiliation(s)
- Helena Brake
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Eugenia Peresypkina
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Alexander V Virovets
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Martin Piesch
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Werner Kremer
- Institute of Biophysics and Physical Biochemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Lisa Zimmermann
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Christian Klimas
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
| | - Manfred Scheer
- Institute of Inorganic Chemistry, University of Regensburg, 93040, Regensburg, Germany
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10
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Brake H, Peresypkina E, Virovets AV, Piesch M, Kremer W, Zimmermann L, Klimas C, Scheer M. Die Iodierung von
cyclo
‐E
5
‐Komplexen (E=P, As). Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004812] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Helena Brake
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Eugenia Peresypkina
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Alexander V. Virovets
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Martin Piesch
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Werner Kremer
- Institut für Biophysik und Physikalische Biochemie Universität Regensburg 93040 Regensburg Deutschland
| | - Lisa Zimmermann
- Institut für Anorganische Chemie Universität Regensburg 93040 Regensburg Deutschland
| | - Christian Klimas
- 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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Hoidn CM, Maier TM, Trabitsch K, Weigand JJ, Wolf R. [3+2] Fragmentation of a Pentaphosphido Ligand by Cyanide. Angew Chem Int Ed Engl 2019; 58:18931-18936. [PMID: 31573718 PMCID: PMC6972699 DOI: 10.1002/anie.201908744] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Indexed: 11/30/2022]
Abstract
The activation of white phosphorus (P4 ) by transition-metal complexes has been studied for several decades, but the functionalization and release of the resulting (organo)phosphorus ligands has rarely been achieved. Herein we describe the formation of rare diphosphan-1-ide anions from a P5 ligand by treatment with cyanide. Cobalt diorganopentaphosphido complexes have been synthesized by a stepwise reaction sequence involving a low-valent diimine cobalt complex, white phosphorus, and diorganochlorophosphanes. The reactions of the complexes with tetraalkylammonium or potassium cyanide afford a cyclotriphosphido cobaltate anion 5 and 1-cyanodiphosphan-1-ide anions [R2 PPCN]- (6-R). The molecular structure of a related product 7 suggests a novel reaction mechanism, where coordination of the cyanide anion to the cobalt center induces a ligand rearrangement. This is followed by nucleophilic attack of a second cyanide anion at a phosphorus atom and release of the P2 fragment.
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Affiliation(s)
- Christian M. Hoidn
- University of RegensburgInstitute of Inorganic Chemistry93040RegensburgGermany
| | - Thomas M. Maier
- University of RegensburgInstitute of Inorganic Chemistry93040RegensburgGermany
| | - Karolina Trabitsch
- University of RegensburgInstitute of Inorganic Chemistry93040RegensburgGermany
| | - Jan J. Weigand
- TU DresdenFaculty of Chemistry and Food Chemistry01062DresdenGermany
| | - Robert Wolf
- University of RegensburgInstitute of Inorganic Chemistry93040RegensburgGermany
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12
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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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13
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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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14
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Hoidn CM, Maier TM, Trabitsch K, Weigand JJ, Wolf R. [3+2]‐Fragmentierung von Pentaphosphidoliganden durch Cyanid. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908744] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Christian M. Hoidn
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Deutschland
| | - Thomas M. Maier
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Deutschland
| | - Karolina Trabitsch
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Deutschland
| | - Jan J. Weigand
- TU Dresden Fakultät für Chemie und Lebensmittelchemie 01062 Dresden Deutschland
| | - Robert Wolf
- Universität Regensburg Institut für Anorganische Chemie 93040 Regensburg Deutschland
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15
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Bispinghoff M, Benkő Z, Grützmacher H, Calvo FD, Caporali M, Peruzzini M. Ruthenium mediated halogenation of white phosphorus: synthesis and reactivity of the unprecedented P 4Cl 2 moiety. Dalton Trans 2019; 48:3593-3600. [PMID: 30444502 DOI: 10.1039/c8dt01840e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transition metal mediated functionalization of P4 is an approach to develop a more sustainable production of organophosphorus compounds. In this paper a ruthenium complex is presented, in which the P4 unit can be selectively converted into new P4R2 molecules in a two-step synthesis. The unsaturated 16 electron species [RuX(Cp*)(PCy3)] (Cp* = C5Me5, X = Cl, Br) reacts with a half equivalent of P4 affording a bimetallic complex bearing a planar P4X2 moiety as a ligand. The latter eliminates chloride anions under reduction with magnesium. In this process the butadiene-like P4Cl2 ligand is converted into two weakly bound P2 units which bridge the ruthenium centers. In the presence of n-BuLi, the P4Cl2 unit can be selectively alkylated, yielding the planar organophosphorus ligand P4nBu2. A detailed analysis of the electronic properties and solid state structures of the compounds combined with DFT calculations and AIM analyses demonstrate that the P4 unit in all complexes acts as an electronically highly flexible, non-innocent ligand.
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Affiliation(s)
- Mark Bispinghoff
- Laboratory of Inorganic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 1, 8093 Zürich, Switzerland
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16
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Recent advances in transition metal-mediated transformations of white phosphorus. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2019. [DOI: 10.1016/bs.adomc.2019.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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17
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Ziegler CGP, Maier TM, Pelties S, Taube C, Hennersdorf F, Ehlers AW, Weigand JJ, Wolf R. Construction of alkyl-substituted pentaphosphido ligands in the coordination sphere of cobalt. Chem Sci 2018; 10:1302-1308. [PMID: 30809344 PMCID: PMC6357856 DOI: 10.1039/c8sc04745f] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 11/29/2018] [Indexed: 11/21/2022] Open
Abstract
Rare mono- and diorganopentaphosphido cobalt complexes are accessible by P-P condensation using the unprecedented, reactive cobalt-gallium tetraphosphido complex [K(dme)2{(MesBIAN)Co(μ-η4:η2-P4)Ga(nacnac)}] (2). Compound 2 was prepared in good yield by reaction of [K(Et2O){(MesBIAN)Co(η4-1,5-cod)}] [1, BIAN = bis(mesitylimino)acenaphthene diimine, cod = 1,5-cyclooctadiene] with [Ga(nacnac)(η2-P4)] (nacnac = CH[CMeN(2,6-iPr2C6H3)]2). Reactions with R2PCl (R = iPr, tBu, and Cy) selectively afford [(MesBIAN)Co(cyclo-P5R2)] (3a-c), which feature η4-coordinated 1,1-diorganopentaphosphido ligands. The mechanism of formation of these species has been studied by 31P{1H} NMR spectroscopy and DFT calculations. In the case of 3a (R = iPr), it was possible to identify the intermediate [(MesBIAN)Co(μ-η4:η2-P5iPr2)Ga(nacnac)] (4) by single-crystal X-ray diffraction. A related, monosubstituted organopentaphosphido cobalt complex [(MesBIAN)Co(μ-η4:η1-P5 tBu)GaCl(nacnac)] (5) was isolated by reacting dichloroalkylphosphane tBuPCl2 with 2. Heterobimetallic complexes such as 2 thus may enable the targeted construction of a range of new metal-coordinated polyphosphorus frameworks by P-P condensation.
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Affiliation(s)
- Christoph G P Ziegler
- University of Regensburg , Institute of Inorganic Chemistry , 93040 Regensburg , Germany .
| | - Thomas M Maier
- University of Regensburg , Institute of Inorganic Chemistry , 93040 Regensburg , Germany .
| | - Stefan Pelties
- University of Regensburg , Institute of Inorganic Chemistry , 93040 Regensburg , Germany .
| | - Clemens Taube
- TU Dresden , Faculty of Chemistry and Food Chemistry , 01062 Dresden , Germany .
| | - Felix Hennersdorf
- TU Dresden , Faculty of Chemistry and Food Chemistry , 01062 Dresden , Germany .
| | - Andreas W Ehlers
- University of Amsterdam , Faculty of Science , van't Hoff Institute for Molecular Sciences , Science Park 904, 1090 GS Amsterdam , The Netherlands.,University of Johannesburg , Department of Chemistry , Auckland Park , Johannesburg , 2006 , South Africa
| | - Jan J Weigand
- TU Dresden , Faculty of Chemistry and Food Chemistry , 01062 Dresden , Germany .
| | - Robert Wolf
- University of Regensburg , Institute of Inorganic Chemistry , 93040 Regensburg , Germany .
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18
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Borger JE, Jongkind MK, Ehlers AW, Lutz M, Slootweg JC, Lammertsma K. Metalate-Mediated Functionalization of P 4 by Trapping Anionic [Cp*Fe(CO) 2(η 1-P 4)] - with Lewis Acids. ChemistryOpen 2017; 6:350-353. [PMID: 28638766 PMCID: PMC5474660 DOI: 10.1002/open.201700027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Indexed: 11/28/2022] Open
Abstract
The development of selective functionalization strategies of white phosphorus (P4) is important to avoid the current chlorinated intermediates. The use of transition metals (TMs) could lead to catalytic procedures, but these are severely hampered by the high reactivity and unpredictable nature of the tetrahedron. Herein, we report selective first steps by reacting P4 with a metal anion [Cp*Fe(CO)2]- (Cp*=C5(CH3)5), which, in the presence of bulky Lewis acids (LA; B(C6F5)3 or BPh3), leads to unique TM-substituted LA-stabilized bicyclo[1.1.0]tetraphosphabutanide anions [Cp*Fe(CO)2(η1-P4⋅LA)]-. Their P-nucleophilic site can be subsequently protonated to afford the transient LA-free neutral butterflies exo,endo- and exo,exo-Cp*Fe- (CO)2(η1-P4H), allowing controllable stepwise metalate-mediated functionalization of P4.
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Affiliation(s)
- Jaap E. Borger
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Maarten K. Jongkind
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Andreas W. Ehlers
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Department of ChemistryUniversity of Johannesburg, Auckland ParkJohannesburg2006South Africa
- Van “t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular ResearchUtrecht UniversityPadualaan 83584 CHUtrechtThe Netherlands
| | - J. Chris Slootweg
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Van “t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Koop Lammertsma
- Department of Chemistry and Pharmaceutical SciencesVrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Department of ChemistryUniversity of Johannesburg, Auckland ParkJohannesburg2006South Africa
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19
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Borger JE, Ehlers AW, Lutz M, Slootweg JC, Lammertsma K. Selective [3+1] Fragmentations of P 4 by "P" Transfer from a Lewis Acid Stabilized [RP 4 ] - Butterfly Anion. Angew Chem Int Ed Engl 2016; 56:285-290. [PMID: 27900815 DOI: 10.1002/anie.201607234] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Indexed: 11/07/2022]
Abstract
Two [3+1] fragmentations of the Lewis acid stabilized bicyclo[1.1.0]tetraphosphabutanide Li[Mes*P4 ⋅ BPh3 ] (Mes*=2,4,6-tBu3 C6 H2 ) are reported. The reactions proceed by extrusion of a P1 fragment, induced by either an imidazolium salt or phenylisocyanate, with release of the transient triphosphirene Mes*P3 , which was isolated as a dimer and trapped by 1,3-cyclohexadiene as a Diels-Alder adduct. DFT quantum chemical computations were used to delineate the reaction mechanisms. These unprecedented pathways grant access to both P1 - and P3 -containing organophosphorus compounds in two simple steps from white phosphorus.
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Affiliation(s)
- Jaap E Borger
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV, Amsterdam, The Netherlands
| | - Andreas W Ehlers
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV, Amsterdam, The Netherlands.,Department of Chemistry, University of Johannesburg, Auckland Park, Johannesburg, 2006, South Africa.,Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - J Chris Slootweg
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV, Amsterdam, The Netherlands.,Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Koop Lammertsma
- Department of Chemistry and Pharmaceutical Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV, Amsterdam, The Netherlands.,Department of Chemistry, University of Johannesburg, Auckland Park, Johannesburg, 2006, South Africa
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20
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Borger JE, Ehlers AW, Lutz M, Slootweg JC, Lammertsma K. Selective [3+1] Fragmentations of P
4
by “P” Transfer from a Lewis Acid Stabilized [RP
4
]
−
Butterfly Anion. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607234] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jaap E. Borger
- Department of Chemistry and Pharmaceutical Sciences Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
| | - Andreas W. Ehlers
- Department of Chemistry and Pharmaceutical Sciences Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Department of Chemistry University of Johannesburg Auckland Park Johannesburg 2006 South Africa
- Van 't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research Utrecht University Padualaan 8 3584 CH Utrecht The Netherlands
| | - J. Chris Slootweg
- Department of Chemistry and Pharmaceutical Sciences Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Van 't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Koop Lammertsma
- Department of Chemistry and Pharmaceutical Sciences Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam The Netherlands
- Department of Chemistry University of Johannesburg Auckland Park Johannesburg 2006 South Africa
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21
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Pelties S, Ehlers AW, Wolf R. Insertion of phenyl isothiocyanate into a P-P bond of a nickel-substituted bicyclo[1.1.0]tetraphosphabutane. Chem Commun (Camb) 2016; 52:6601-4. [PMID: 27111495 DOI: 10.1039/c6cc01572g] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new reaction mode for bicyclo[1.1.0]tetraphosphabutanes is reported. The C[double bond, length as m-dash]S and C[double bond, length as m-dash]N bonds of phenyl isothiocyanate reversibly insert into a P-P bond of [{CpNi(IMes)}2(μ-η(1):η(1)-P4)] (, IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene), forming isomers and . X-ray crystallography and (31)P{(1)H} NMR spectroscopy revealed similar bicyclo[3.1.0]heterohexane structures for these compounds.
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Affiliation(s)
- Stefan Pelties
- University of Regensburg, Institute of Inorganic Chemistry, 93040 Regensburg, Germany.
| | - Andreas W Ehlers
- Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands
| | - Robert Wolf
- University of Regensburg, Institute of Inorganic Chemistry, 93040 Regensburg, Germany.
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22
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Bhattacharyya KX, Dreyfuss S, Saffon-Merceron N, Mézailles N. P4functionalization by hydrides: direct synthesis of P–H bonds. Chem Commun (Camb) 2016; 52:5179-82. [DOI: 10.1039/c6cc01683a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Functionalization of white phosphorus (P4) by hydride sources MBH4and LiBEt3H leads to the formation of HP4M and LiPH2(BEt3)2respectively.
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Affiliation(s)
- Koyel X. Bhattacharyya
- Laboratoire Hétérochimie Fondamentale et Appliquée
- CNRS
- Université Paul Sabatier
- 31062 Toulouse
- France
| | - Sébastien Dreyfuss
- Laboratoire Hétérochimie Fondamentale et Appliquée
- CNRS
- Université Paul Sabatier
- 31062 Toulouse
- France
| | | | - Nicolas Mézailles
- Laboratoire Hétérochimie Fondamentale et Appliquée
- CNRS
- Université Paul Sabatier
- 31062 Toulouse
- France
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23
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Borger JE, Ehlers AW, Lutz M, Slootweg JC, Lammertsma K. Stabilization and Transfer of the Transient [Mes*P4
]−
Butterfly Anion Using BPh3. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508916] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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24
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Borger JE, Ehlers AW, Lutz M, Slootweg JC, Lammertsma K. Stabilization and Transfer of the Transient [Mes*P4](-) Butterfly Anion Using BPh3. Angew Chem Int Ed Engl 2015; 55:613-7. [PMID: 26610405 DOI: 10.1002/anie.201508916] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 10/27/2015] [Indexed: 11/07/2022]
Abstract
The transient bicyclo[1.1.0]tetraphosphabutane anion, generated from white phosphorus (P4) and Mes*Li (Mes*=2,4,6-tBu3C6H2), can be trapped by BPh3 in THF. This Lewis acid stabilized anion can be used as an [RP4](-) transfer agent, reacting cleanly with neutral Lewis acids (B(C6F5)3, BH3, and W(CO)5) to afford unique singly and doubly coordinated butterfly anions, and with the trityl cation to form a neutral, nonsymmetrical, all-carbon-substituted P4 derivative. This reaction path enables a simple, stepwise functionalization of white phosphorus.
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Affiliation(s)
- Jaap E Borger
- Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam (The Netherlands)
| | - Andreas W Ehlers
- Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam (The Netherlands)
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research, Utrecht University, Padualaan 8, 3584 CH Utrecht (The Netherlands)
| | - J Chris Slootweg
- Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam (The Netherlands)
| | - Koop Lammertsma
- Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam (The Netherlands).
- Department of Chemistry, University of Johannesburg, Auckland Park, Johannesburg, 2006 (South Africa).
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25
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Bresien J, Faust K, Hering-Junghans C, Rothe J, Schulz A, Villinger A. Synthetic strategies to bicyclic tetraphosphanes using P1, P2 and P4 building blocks. Dalton Trans 2015; 45:1998-2007. [PMID: 26337397 DOI: 10.1039/c5dt02757h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different reactions of Mes* substituted phosphanes (Mes* = 2,4,6-tri-tert-butylphenyl) led to the formation of the bicyclic tetraphosphane Mes*P4Mes* (5) and its unknown Lewis acid adduct 5·GaCl3. In this context, the endo-exo isomer of 5 was fully characterized for the first time. The synthesis was achieved by reactions involving "self-assembly" of the P4 scaffold from P1 building blocks (i.e. primary phosphanes) or by reactions starting from P2 or P4 scaffolds (i.e. a diphosphene or cyclic tetraphosphane). Furthermore, interconversion between the exo-exo and endo-exo isomer were studied by (31)P NMR spectroscopy. All compounds were fully characterized by experimental as well as computational methods.
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Affiliation(s)
- Jonas Bresien
- Institut für Chemie, Universität Rostock, Albert-Einstein-Straße 3a, D-18059 Rostock, Germany.
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26
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Yao S, Lindenmaier N, Xiong Y, Inoue S, Szilvási T, Adelhardt M, Sutter J, Meyer K, Driess M. A Neutral Tetraphosphacyclobutadiene Ligand in Cobalt(I) Complexes. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409469] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Yao S, Lindenmaier N, Xiong Y, Inoue S, Szilvási T, Adelhardt M, Sutter J, Meyer K, Driess M. A neutral tetraphosphacyclobutadiene ligand in cobalt(I) complexes. Angew Chem Int Ed Engl 2014; 54:1250-4. [PMID: 25475174 DOI: 10.1002/anie.201409469] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 10/31/2014] [Indexed: 11/09/2022]
Abstract
The unusual reactivity of the newly synthesized β-diketiminato cobalt(I) complexes, [(L(Dep)Co)2] (2 a, L(Dep)=CH[C(Me)N(2,6-Et2C6H3)]2) and [L(Dipp)Co⋅toluene] (2 b, L(Dipp)=CH[CHN(2,6-(i)Pr2C6H3)]2), toward white phosphorus was investigated, affording the first cobalt(I) complexes [(L(Dep)Co)2(μ2:η(4),η(4)-P4)] (3 a) and [(L(Dipp)Co)2(μ2:η(4),η(4)-P4)] (3 b) bearing the neutral cyclo-P4 ligand with a rectangular-planar structure. The redox chemistry of 3 a and 3 b was studied by cyclic voltammetry and their chemical reduction with one molar equivalent of potassium graphite led to the isolation of [(L(Dep)Co)2(μ2:η(4),η(4)-P4)][K(dme)4] (4 a) and [(L(Dipp)Co)2(μ2:η(4),η(4)-P4)][K(dme)4] (4 b). Unexpectedly, the monoanionic Co2P4 core in 4 a and 4 b, respectively, contains the two-electron-reduced cyclo-P4(2-) ligand with a square-planar structure and mixed-valent cobalt(I,II) sites. The electronic structures of 3 a, 3 b, 4 a, and 4 b were elucidated by NMR and EPR spectroscopy as well as magnetic measurements and are in agreement with results of broken-symmetry DFT calculations.
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Affiliation(s)
- Shenglai Yao
- Technische Universität Berlin, Institute of Chemistry: Metalorganics and Inorganic Materials, Sekr. C2, Strasse des 17. Juni 135, 10623 Berlin (Germany) http://www.driess.tu-berlin.de
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28
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Camp C, Maron L, Bergman RG, Arnold J. Activation of white phosphorus by low-valent group 5 complexes: formation and reactivity of cyclo-P4 inverted sandwich compounds. J Am Chem Soc 2014; 136:17652-61. [PMID: 25469924 PMCID: PMC4277768 DOI: 10.1021/ja5107282] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We report the synthesis and comprehensive study of the electronic structure of a unique series of dinuclear group 5 cyclo-tetraphosphide inverted sandwich complexes. White phosphorus (P4) reacts with niobium(III) and tantalum(III) β-diketiminate (BDI) tert-butylimido complexes to produce the bridging cyclo-P4 phosphide species {[(BDI)(N(t)Bu)M]2(μ-η(3):η(3)P4)} (1, M = Nb; 2, M = Ta) in fair yields. 1 is alternatively synthesized upon hydrogenolysis of (BDI)Nb(N(t)Bu)Me2 in the presence of P4. The trinuclear side product {[(BDI)NbN(t)Bu]3(μ-P12)} (3) is also identified. Protonation of 1 with [HOEt2][B(C6F5)4] does not occur at the phosphide ring but rather involves the BDI ligand to yield {[(BDI(#))Nb(N(t)Bu)]2(μ-η(3):η(3)P4)}[B(C6F5)4]2 (4). The monocation and dication analogues {[(BDI)(N(t)Bu)Nb]2(μ-η(3):η(3)P4)}{B(Ar(F))4}n (5, n = 1; 6, n = 2) are both synthesized by oxidation of 1 with AgBAr(F). DFT calculations were used in combination with EPR and UV-visible spectroscopies to probe the nature of the metal-phosphorus bonding.
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Affiliation(s)
- Clément Camp
- Department of Chemistry, University of California , Berkeley, California 94720, United States
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29
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Caporali M, Gonsalvi L, Mirabello V, Ienco A, Manca G, Zanobini F, Peruzzini M. The Bimetallic Activation of White Phosphorus bytrans-[RhCl(CO)(dppm)]2Results in a Tetrahedro-Rh2P2Moiety. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201400046] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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30
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Mirabello V, Caporali M, Gonsalvi L, Manca G, Ienco A, Peruzzini M. Stabilization of the Triphosphallyl Ligand η3-P3{P(O)H} at Iridium via Alkaline Activation of P4. Chem Asian J 2013; 8:3177-84. [PMID: 24039037 DOI: 10.1002/asia.201300885] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Vincenzo Mirabello
- Consiglio Nazionale delle Ricerche, Istituto di Chimica dei Composti Organometallici, Via Madonna del Piano10, 50019 Sesto Fiorentino (Italy); Current address: Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY (UK)
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