1
|
Riethmann M, Föhrenbacher SA, Keiling H, Ignat'ev NV, Finze M, Radius U. Fluoride Abstraction Induced by Tris(pentafluoroethyl)difluorophosphorane: A Convenient Way to Synthesize Cationic N-Heterocyclic Carbene- and Cyclic (Alkyl)(amino)carbene-Ligated Copper Alkyne and Arene Complexes. Inorg Chem 2024; 63:8351-8365. [PMID: 38639397 DOI: 10.1021/acs.inorgchem.4c00750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
We herein report the convenient synthesis of different N-heterocyclic carbene (NHC)- and cyclic (alkyl)(amino)carbene (cAAC)-ligated copper cations using the weakly coordinating tris(pentafluoroethyl)trifluorophosphate counterion (FAP anion, [(C2F5)3PF3]-). The reaction of the fluorido complexes [(carbene)CuF] (carbene = NHC, cAACMe) 2a-2f and the tris(pentafluoroethyl)difluorophosphorane (C2F5)3PF2 in the presence of alkynes or arenes led to fluoride transfer from Cu to the phosphorane with formation of the cationic transition metal complexes [(carbene)Cu(L)]+ and the weakly coordinating counteranion [(C2F5)3PF3]- (FAP). Using this method, the complexes [(IDipp)Cu(L)]+FAP- (IDipp = 1,3-bis(2,6-di-iso-propylphenyl)-imidazolin-2-ylidene; L = PhC≡CPh, 4d; PhC≡CMe, 5d), [(cAACMe)Cu(L)]+FAP- (cAACMe = 1-(2,6-di-iso-propylphenyl)-3,3,5,5-tetramethyl-pyrrolidin-2-ylidene; L = PhC≡CPh, 4f; PhC≡CMe, 5f), [(SIDipp)Cu(C6Me6)]+FAP- (6e), (SIDipp = 1,3-bis(2,6-di-iso-propylphenyl)-imidazolidine-2-ylidene), and [(cAACMe)Cu(C6Me6)]+FAP- (6f) have been synthesized and characterized. The complexes [(IDipp)Cu(C6Me6)]+FAP- (6d) and [(cAACMe)Cu(C6Me6)]+FAP- (6f) have been used as catalysts for the copper(I)-catalyzed cycloaddition of benzyl azide to terminal alkynes.
Collapse
Affiliation(s)
- Melanie Riethmann
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Steffen A Föhrenbacher
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Hannes Keiling
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Nikolai V Ignat'ev
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Consultant, Merck KGaA, Frankfurter Straße 250, Darmstadt 64293, Germany
| | - Maik Finze
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Udo Radius
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| |
Collapse
|
2
|
Föhrenbacher SA, Krahfuss MJ, Zapf L, Friedrich A, Ignat'ev NV, Finze M, Radius U. Tris(pentafluoroethyl)difluorophosphorane: A Versatile Fluoride Acceptor for Transition Metal Chemistry. Chemistry 2021; 27:3504-3516. [PMID: 33241855 PMCID: PMC7898530 DOI: 10.1002/chem.202004885] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 11/23/2020] [Indexed: 12/13/2022]
Abstract
Fluoride abstraction from different types of transition metal fluoride complexes [Ln MF] (M=Ti, Ni, Cu) by the Lewis acid tris(pentafluoroethyl)difluorophosphorane (C2 F5 )3 PF2 to yield cationic transition metal complexes with the tris(pentafluoroethyl)trifluorophosphate counterion (FAP anion, [(C2 F5 )3 PF3 ]- ) is reported. (C2 F5 )3 PF2 reacted with trans-[Ni(iPr2 Im)2 (ArF )F] (iPr2 Im=1,3-diisopropylimidazolin-2-ylidene; ArF =C6 F5 , 1 a; 4-CF3 -C6 F4 , 1 b; 4-C6 F5 -C6 F4 , 1 c) through fluoride transfer to form the complex salts trans-[Ni(iPr2 Im)2 (solv)(ArF )]FAP (2 a-c[solv]; solv=Et2 O, CH2 Cl2 , THF) depending on the reaction medium. In the presence of stronger Lewis bases such as carbenes or PPh3 , solvent coordination was suppressed and the complexes trans-[Ni(iPr2 Im)2 (PPh3 )(C6 F5 )]FAP (trans-2 a[PPh3 ]) and cis-[Ni(iPr2 Im)2 (Dipp2 Im)(C6 F5 )]FAP (cis-2 a[Dipp2 Im]) (Dipp2 Im=1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene) were isolated. Fluoride abstraction from [(Dipp2 Im)CuF] (3) in CH2 Cl2 or 1,2-difluorobenzene led to the isolation of [{(Dipp2 Im)Cu}2 ]2+ 2 FAP- (4). Subsequent reaction of 4 with PPh3 and different carbenes resulted in the complexes [(Dipp2 Im)Cu(LB)]FAP (5 a-e, LB=Lewis base). In the presence of C6 Me6 , fluoride transfer afforded [(Dipp2 Im)Cu(C6 Me6 )]FAP (5 f), which serves as a source of [(Dipp2 Im)Cu)]+ . Fluoride abstraction of [Cp2 TiF2 ] (7) resulted in the formation of dinuclear [FCp2 Ti(μ-F)TiCp2 F]FAP (8) (Cp=η5 -C5 H5 ) with one terminal fluoride ligand at each titanium atom and an additional bridging fluoride ligand.
Collapse
Affiliation(s)
- Steffen A. Föhrenbacher
- Institute of Inorganic ChemistryJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Mirjam J. Krahfuss
- Institute of Inorganic ChemistryJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Ludwig Zapf
- Institute of Inorganic ChemistryJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institute of Inorganic ChemistryJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Nikolai V. Ignat'ev
- Institute of Inorganic ChemistryJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- ConsultantMerck KGaAFrankfurter Strasse 25064293DarmstadtGermany
| | - Maik Finze
- Institute of Inorganic ChemistryJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
- Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Udo Radius
- Institute of Inorganic ChemistryJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| |
Collapse
|
3
|
Shmakova AA, Berezin AS, Abramov PA, Sokolov MN. Self-Assembly of Ag +/[PW 11NbO 40] 4- Complexes in Nonaqueous Solutions. Inorg Chem 2020; 59:1853-1862. [PMID: 31967809 DOI: 10.1021/acs.inorgchem.9b03064] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Self-assembly between Ag+ and [PW11NbO40]4- in N- and O-donor solvents (nitriles and amides) has been studied. In the case of dimethylformamide (DMF), formation of a yellow [Ag4(DMF)12][PW11NbO40] (1a) metastable phase and a colorless [Ag4(DMF)10][PW11NbO40] (1) stable phase was observed. In acetonitrile (CH3CN), the product was [Ag(CH3CN)4]2{[Ag(CH3CN)3]2[PW11NbO40]} (2a). By contrast, [SiW12O40]4- of the same size and charge as [PW11NbO40]4- produces [Ag(CH3CN)3]4[SiW12O40] (3a). Partial desolvation of 2a and 3a leads to Ag4[PW11NbO40]·7.5CH3CN (2) and Ag4[SiW12O40]·7.5CH3CN (3), respectively. The CH3CN molecules in the structure of 2 are labile, and this compound was used as the starting material to study solvent-exchange processes in N-methyl-2-pyrrolidone (NMP), dimethylacetamide (DMA), diethylformamide (DEF), and benzonitrile (PhCN) solutions. These solvent reactions yield [Ag(DMA)4][Ag3(DMA)6][PW11NbO40] (4), [Ag2(NMP)4(CH3CN)]2[PW11NbO40]·1.3NMP (5a), [Ag2(NMP)5]2[PW11NbO40] (5b), Ag4[PW11NbO40]·9.5DEF (6), and [Ag(PhCN)4]2[{Ag(PhCN)3}2PW11NbO40] (7). All products were isolated and characterized by single-crystal X-ray diffraction (except for 2 and 3), IR, elemental analysis, and thermogravimetric analysis techniques. The O-donor solvents favor polynuclear, solvent-bridged cationic aggregates. In the case of DMF, DMA, and DEF discrete, tri- and tetranuclear polycations are observed, while in the case of NMP, the formation of infinite polycationic structures takes place. By contrast, the N-donor solvents (CH3CN and PhCN) favor mononuclear cations, which can exist either as distorted tetrahedral, isolated [Ag(Solv)4]+ cations or as pseudotriangular {Ag(Solv)3}+ units, additionally coordinated to a polyoxometalate. Screening of the luminescent properties for solid samples of 1-7 revealed that only 5a/5b and 7 are emissive. In particular, the sample containing 5a and 5b demonstrates long-lived phosphorescence with a 30 ms lifetime.
Collapse
Affiliation(s)
- Alexandra A Shmakova
- Nikolaev Institute of Inorganic Chemistry , 3 Akad. Lavrentiev Avenue , 630090 Novosibirsk , Russia
| | - Alexey S Berezin
- Nikolaev Institute of Inorganic Chemistry , 3 Akad. Lavrentiev Avenue , 630090 Novosibirsk , Russia
| | - Pavel A Abramov
- Nikolaev Institute of Inorganic Chemistry , 3 Akad. Lavrentiev Avenue , 630090 Novosibirsk , Russia.,South Ural State University , Prospekt Lenina 76 , 454080 Chelyabinsk , Russia
| | - Maxim N Sokolov
- Nikolaev Institute of Inorganic Chemistry , 3 Akad. Lavrentiev Avenue , 630090 Novosibirsk , Russia.,Novosibirsk State University , 2 Pirogova strasse , 630090 Novosibirsk , Russia
| |
Collapse
|
4
|
Chupina AV, Shayapov V, Novikov AS, Volchek VV, Benassi E, Abramov PA, Sokolov MN. [{AgL}2Mo8O26]n– complexes: a combined experimental and theoretical study. Dalton Trans 2020; 49:1522-1530. [DOI: 10.1039/c9dt04043a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two sets of silver–molybdate complexes with L = XR3 (X = P, As, Sb; R3 = Ph3, Ph2Py) and functionalized pyridine-based ligands have been studied with different techniques.
Collapse
Affiliation(s)
- Anastasia V. Chupina
- Nikolaev Institute of Inorganic Chemistry SB RAS
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| | - Vladimir Shayapov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- 630090 Novosibirsk
- Russia
| | - Alexander S. Novikov
- Institute of Chemistry
- Saint Petersburg State University
- Saint Petersburg
- Russian Federation
| | | | | | - Pavel A. Abramov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- 630090 Novosibirsk
- Russia
- Lanzhou Institute of Chemical Physics
- CAS
| | - Maxim N. Sokolov
- Nikolaev Institute of Inorganic Chemistry SB RAS
- 630090 Novosibirsk
- Russia
- Novosibirsk State University
- 630090 Novosibirsk
| |
Collapse
|
5
|
Ueda T, Tominaga T, Mochida T, Takahashi K, Kimura S. Photogeneration of Microporous Amorphous Coordination Polymers from Organometallic Ionic Liquids. Chemistry 2018; 24:9490-9493. [DOI: 10.1002/chem.201801365] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Revised: 05/30/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Takahiro Ueda
- Department of Chemistry; Graduate School of Science; Kobe University; Kobe Hyogo 657-8501 Japan
| | - Takumi Tominaga
- Department of Chemistry; Graduate School of Science; Kobe University; Kobe Hyogo 657-8501 Japan
| | - Tomoyuki Mochida
- Department of Chemistry; Graduate School of Science; Kobe University; Kobe Hyogo 657-8501 Japan
| | - Kazuyuki Takahashi
- Department of Chemistry; Graduate School of Science; Kobe University; Kobe Hyogo 657-8501 Japan
| | - Seiji Kimura
- Coordinated Center for UEC Research Facilities; The University of Electro-Communications; Chofu Tokyo 182-8585 Japan
| |
Collapse
|
6
|
Bader J, Neumann B, Stammler HG, Ignat'ev N, Hoge B. Activation of Acetonitrile with (C 2 F 5 ) 3 PF 2 and Amines. Chemistry 2018; 24:6975-6982. [PMID: 29488665 DOI: 10.1002/chem.201800682] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Indexed: 11/10/2022]
Abstract
Acetonitrile is deprotonated by a combination of the strong Lewis acid (C2 F5 )3 PF2 and triethylamine. The resulting cyanomethyl function is bound to the phosphorus moiety, affording the highly stable salt [HNEt3 ][P(C2 F5 )3 F2 (CH2 CN)]. Salt metathesis reactions furnished the corresponding [Cu(MeCN)2 ]+ and [Ag(MeCN)]+ derivatives in which the CH2 CN substituent of the anion [P(C2 F5 )3 F2 (CH2 CN)]- coordinates to the metal. An investigation of the gas separation capability of the silver salt [Ag(MeCN)][P(C2 F5 )3 F2 (CH2 CN)] shows an uptake of 1.7 equivalents of isobutene from a propane/isobutene mixture. The reaction of (C2 F5 )3 PF2 with acetonitrile and diethylamine furnishes [P(C2 F5 )3 F2 {NHC(CH3 )NEt2 }]-a phosphate featuring an amidine ligand which formally results from hydroamination of acetonitrile by HNEt2 . Exchange of HNEt2 with the primary amines H2 NPh and H2 NBu leads to comparable amidine salts that exhibit a solvent-dependent conformational isomerism.
Collapse
Affiliation(s)
- Julia Bader
- Centrum für Molekulare Materialien, Fakultät für Chemie, Anorganische Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Beate Neumann
- Centrum für Molekulare Materialien, Fakultät für Chemie, Anorganische Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Hans-Georg Stammler
- Centrum für Molekulare Materialien, Fakultät für Chemie, Anorganische Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Nikolai Ignat'ev
- Consultant, Merck KGaA, Frankfurter Str. 250, 64293, Darmstadt, Germany
| | - Berthold Hoge
- Centrum für Molekulare Materialien, Fakultät für Chemie, Anorganische Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| |
Collapse
|