1
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Chen M, Zhang Z, Qiao Z, Zhao L, Mo Z. An Isolable Bis(Germylene)-Stabilized Plumbylone. Angew Chem Int Ed Engl 2023; 62:e202215146. [PMID: 36421062 DOI: 10.1002/anie.202215146] [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: 10/14/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/25/2022]
Abstract
We report herein the synthesis of a stable plumbylone (3) by reduction of a bromodigermylplumbylene (2) with 2.2 equiv of potassium graphite (KC8 ). The molecular structure of 3 was established by a single-crystal X-ray diffraction study and features a two-coordinated Pb center with an acute Ge-Pb-Ge bond angle. Computational studies showed that this complex (3) possesses a singlet electronic ground state with a Pb0 center. Its high thermal stability can be most likely ascribed to the delocalization of π electrons over the Ge-Pb-Ge moiety. A preliminary reactivity study demonstrates that complex 3 can deliver Pb0 atoms to an organic azide producing a tetrameric imido complex [(PbNDipp)4 ] (Dipp=2,6-i Pr-C6 H3 , 4) and perform a metathesis reaction with GeCl2 ⋅dioxane to produce a bis(germylene)-stabilized germylone (5), highlighting the synthetic utility of 3.
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Affiliation(s)
- Ming Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhaoyin Zhang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China
| | - Zihao Qiao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Lili Zhao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, 211816, China
| | - Zhenbo Mo
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
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2
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Dolai R, Kumar R, Elvers BJ, Pal PK, Joseph B, Sikari R, Nayak MK, Maiti A, Singh T, Chrysochos N, Jayaraman A, Krummenacher I, Mondal J, Priyakumar UD, Braunschweig H, Yildiz CB, Schulzke C, Jana A. Carbodicarbenes and Striking Redox Transitions of their Conjugate Acids: Influence of NHC versus CAAC as Donor Substituents. Chemistry 2023; 29:e202202888. [PMID: 36129127 PMCID: PMC10100033 DOI: 10.1002/chem.202202888] [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: 09/15/2022] [Indexed: 01/11/2023]
Abstract
Herein, a new type of carbodicarbene (CDC) comprising two different classes of carbenes is reported; NHC and CAAC as donor substituents and compare the molecular structure and coordination to Au(I)Cl to those of NHC-only and CAAC-only analogues. The conjugate acids of these three CDCs exhibit notable redox properties. Their reactions with [NO][SbF6 ] were investigated. The reduction of the conjugate acid of CAAC-only based CDC with KC8 results in the formation of hydrogen abstracted/eliminated products, which proceed through a neutral radical intermediate, detected by EPR spectroscopy. In contrast, the reduction of conjugate acids of NHC-only and NHC/CAAC based CDCs led to intermolecular reductive (reversible) carbon-carbon sigma bond formation. The resulting relatively elongated carbon-carbon sigma bonds were found to be readily oxidized. They were, thus, demonstrated to be potent reducing agents, underlining their potential utility as organic electron donors and n-dopants in organic semiconductor molecules.
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Affiliation(s)
- Ramapada Dolai
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - Rahul Kumar
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - Benedict J Elvers
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Strasse 4, 17489, Greifswald, Germany
| | - Pradeep Kumar Pal
- International Institute of Information Technology Gachibowli, Hyderabad, 500032, India
| | - Benson Joseph
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - Rina Sikari
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - Mithilesh Kumar Nayak
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - Avijit Maiti
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - Tejender Singh
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - Nicolas Chrysochos
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - Arumugam Jayaraman
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Ivo Krummenacher
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Jagannath Mondal
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
| | - U Deva Priyakumar
- International Institute of Information Technology Gachibowli, Hyderabad, 500032, India
| | - Holger Braunschweig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Cem B Yildiz
- Department of Aromatic and Medicinal Plants, Aksaray University, Aksaray, 68100, Turkey
| | - Carola Schulzke
- Institut für Biochemie, Universität Greifswald, Felix-Hausdorff-Strasse 4, 17489, Greifswald, Germany
| | - Anukul Jana
- Tata Institute of Fundamental Research Hyderabad Gopanpally, Hyderabad, 500046, Telangana, India
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3
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Su W, Ma Y, Xiang L, Wang J, Wang S, Zhao L, Frenking G, Ye Q. Isolation of a Uranium(III)-Carbon Multiple Bond Complex. Chemistry 2021; 27:10006-10011. [PMID: 33913186 PMCID: PMC8362146 DOI: 10.1002/chem.202100699] [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: 02/25/2021] [Indexed: 12/16/2022]
Abstract
Low-valent uranium-element multiple bond complexes remain scarce, though there is burgeoning interest regarding to their bonding and reactivity. Herein, isolation of a uranium(III)-carbon double bond complex [(Cp*)2 U(CDP)](BPh4 ) (1) comprising a tridentate carbodiphosphorane (CDP) was reported for the first time. Oxidation of 1 afforded the corresponding U(IV) complex [(Cp*)2 U(CDP)](BPh4 )2 (2). The distance between U and C in 2 is 2.481 Å, indicating the existence of a typical U=C double bond, which is further confirmed by quantum chemical calculations. Bonding analysis suggested that the CDP also serves as both σ- and π-donor in complex 1, though a longer U-C bond (2.666(3) Å) is observed. It implies that 1 is the first isolable mononuclear uranium(III) carbene complex. Moreover, these results suggest that CDPs are promising ligands to establish other low-valent f-block metal-carbon multiple bond complexes.
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Affiliation(s)
- Wei Su
- Department of ChemistrySouthern University of Science and Technology518055ShenzhenChina
| | - Yanshun Ma
- Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringNanjing Tech University211816NanjingChina
| | - Libo Xiang
- Department of ChemistrySouthern University of Science and Technology518055ShenzhenChina
| | - Junyi Wang
- Department of ChemistrySouthern University of Science and Technology518055ShenzhenChina
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection School for Radiological and interdisciplinary Sciences (RAD−X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSooChow University199 Ren'ai Road215123SuzhouChina
| | - Lili Zhao
- Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringNanjing Tech University211816NanjingChina
| | - Gernot Frenking
- Institute of Advanced Synthesis School of Chemistry and Molecular EngineeringNanjing Tech University211816NanjingChina
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Straße 435032MarburgGermany
| | - Qing Ye
- Department of ChemistrySouthern University of Science and Technology518055ShenzhenChina
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4
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Yao S, Szilvási T, Xiong Y, Lorent C, Ruzicka A, Driess M. Bis(silylene)-Stabilized Monovalent Nitrogen Complexes. Angew Chem Int Ed Engl 2020; 59:22043-22047. [PMID: 32841449 PMCID: PMC7756627 DOI: 10.1002/anie.202011598] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Indexed: 01/08/2023]
Abstract
The first series of bis(silylene)-stabilized nitrogen(I) compounds is described. Starting from the 1,2-bis(N-heterocyclic silylenyl) 1,2-dicarba-closo-dedocaborane(12) scaffold 1, [1,2-(LSi)2 C2 B10 H10 ; L=PhC(Nt Bu)2 ], reaction with adamantyl azide (AdN3 ) affords the terminal N-μ2 -bridged zwitterionic carborane-1,2-bis(silylium) AdN3 adduct 2 with an open-cage dianionic nido-C2 B10 cluster core. Remarkably, upon one-electron reduction of 2 with C8 K and liberation of N2 and adamantane, the two silylene subunits are regenerated to furnish the isolable bis(silylene)-stabilized NI complex as an anion of 3 with the nido-C2 B10 cluster cage. On the other hand, one-electron oxidation of 2 with silver(I) yields the monocationic bis(silylene) NI complex 4 with the closo-C2 B10 cluster core. Moreover, the corresponding neutral NI radical complex 5 results from single-electron transfer from 3 to 4.
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Affiliation(s)
- Shenglai Yao
- Department of Chemistry: Metalorganics and Inorganic MaterialsTechnische Universität BerlinStrasse des 17. Juni 135, Sekr. C210623BerlinGermany
| | - Tibor Szilvási
- Department of Chemical & Biological EngineeringUniversity of Wisconsin-Madison1415 Engineering DriveMadisonWI53706USA
| | - Yun Xiong
- Department of Chemistry: Metalorganics and Inorganic MaterialsTechnische Universität BerlinStrasse des 17. Juni 135, Sekr. C210623BerlinGermany
| | - Christian Lorent
- Department of Chemistry, Physical and Biophysical ChemistryTechnische Universität BerlinStrasse des 17. Juni 135, Sekr. PC1410623BerlinGermany
| | - Ales Ruzicka
- Department of General and Inorganic ChemistryFaculty of Chemical TechnologyUniversity of PardubiceStudentska 573532 10PardubiceCzech Republic
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic MaterialsTechnische Universität BerlinStrasse des 17. Juni 135, Sekr. C210623BerlinGermany
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5
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Yao S, Szilvási T, Xiong Y, Lorent C, Ruzicka A, Driess M. Bis(silylene)‐Stabilized Monovalent Nitrogen Complexes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202011598] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Shenglai Yao
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 135, Sekr. C2 10623 Berlin Germany
| | - Tibor Szilvási
- Department of Chemical & Biological Engineering University of Wisconsin-Madison 1415 Engineering Drive Madison WI 53706 USA
| | - Yun Xiong
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 135, Sekr. C2 10623 Berlin Germany
| | - Christian Lorent
- Department of Chemistry, Physical and Biophysical Chemistry Technische Universität Berlin Strasse des 17. Juni 135, Sekr. PC14 10623 Berlin Germany
| | - Ales Ruzicka
- Department of General and Inorganic Chemistry Faculty of Chemical Technology University of Pardubice Studentska 573 532 10 Pardubice Czech Republic
| | - Matthias Driess
- Department of Chemistry: Metalorganics and Inorganic Materials Technische Universität Berlin Strasse des 17. Juni 135, Sekr. C2 10623 Berlin Germany
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6
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Zargaran P, Mulks FF, Gall S, Rudolph M, Rominger F, Hashmi ASK. Dinuclear NHC Gold(I) Allenyl and Propargyl Complexes: An Experimental and Theoretical Study. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00943] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Poorya Zargaran
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Florian. F. Mulks
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Samuel Gall
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut, Heidelberg University, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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7
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Mulks FF, Antoni PW, Gross JH, Graf J, Rominger F, Hashmi ASK. 1,1-Digoldallylium Complexes: Diaurated Allylic Carbocations Indicate New Prospects of the Coordination Chemistry of Carbon. J Am Chem Soc 2019; 141:4687-4695. [PMID: 30764608 DOI: 10.1021/jacs.8b13395] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Reacting (NHC)(cyclopropenyl)gold(I) complexes with cationic gold complexes [(IPr)AuX] afforded extremely reactive allylium-1,1-diido-bridged digold intermediates. We prove the existence and constitution of this structure with FT-ICR-MS/MS, NMR, and UV-vis-NIR experiments and isolated the nucleophilic addition product [(Me)(Ph)(CCHC){Au(IPr)}2(SOMe2)]NTf2 with DMSO. Our computational investigation unveiled that the bonding situation of this μ-allylium-1,1-diido digold domain was best described as a three-center-four-electron bond with a π-backbond. The valence orbitals showed extreme delocalization and strong π-interactions between the three centers Au1-C1-Au2. The bridging carbon atom C1 was best described as trigonal planar sp-hybridized carbon in this structure. Excitation succeeded in UV-vis-NIR measurements with energies as low as near-IR radiation.
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Affiliation(s)
- Florian F Mulks
- Organisch-Chemisches Institut , Heidelberg University , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Patrick W Antoni
- Organisch-Chemisches Institut , Heidelberg University , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Jürgen H Gross
- Organisch-Chemisches Institut , Heidelberg University , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Jürgen Graf
- Organisch-Chemisches Institut , Heidelberg University , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Frank Rominger
- Organisch-Chemisches Institut , Heidelberg University , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - A Stephen K Hashmi
- Organisch-Chemisches Institut , Heidelberg University , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
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8
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Chan SC, Gupta P, Engelmann X, Ang ZZ, Ganguly R, Bill E, Ray K, Ye S, England J. Observation of Carbodicarbene Ligand Redox Noninnocence in Highly Oxidized Iron Complexes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809158] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Siu-Chung Chan
- Division of Chemistry and Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Puneet Gupta
- Max-Plank-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Xenia Engelmann
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Zhi Zhong Ang
- Division of Chemistry and Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Eckhard Bill
- Max-Plank-Institut für Chemische Energie Konversion; Stiftstraße 34-36 45470 Mülheim an der Ruhr Germany
| | - Kallol Ray
- Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Straße 2 12489 Berlin Germany
| | - Shengfa Ye
- Max-Plank-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Jason England
- Division of Chemistry and Biological Chemistry; School of Physical & Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
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9
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Chan SC, Gupta P, Engelmann X, Ang ZZ, Ganguly R, Bill E, Ray K, Ye S, England J. Observation of Carbodicarbene Ligand Redox Noninnocence in Highly Oxidized Iron Complexes. Angew Chem Int Ed Engl 2018; 57:15717-15722. [PMID: 30239076 DOI: 10.1002/anie.201809158] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/14/2018] [Indexed: 01/06/2023]
Abstract
To probe the possibility that carbodicarbenes (CDCs) are redox active ligands, all four members of the redox series [Fe(1)2 ]n+ (n=2-5) were synthesized, where 1 is a neutral tridentate CDC. Through a combination of spectroscopy and DFT calculations, the electronic structure of the pentacation is shown to be [FeIII (1.+ )2 ]5+ (S= 1 / 2 ). That of [Fe(1)2 ]4+ is more ambiguous, but it has significant contributions from the open-shell singlet [FeIII (1)(1.+ )]4+ (S=0). The observed spin states derive from antiferromagnetic coupling of their constituent low-spin iron(III) centres and cation radical ligands. This marks the first time redox activity has been observed for carbones and expands the diverse chemical behaviour known for these ligands.
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Affiliation(s)
- Siu-Chung Chan
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Puneet Gupta
- Max-Plank-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Xenia Engelmann
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany
| | - Zhi Zhong Ang
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Rakesh Ganguly
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Eckhard Bill
- Max-Plank-Institut für Chemische Energie Konversion, Stiftstraße 34-36, 45470, Mülheim an der Ruhr, Germany
| | - Kallol Ray
- Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, 12489, Berlin, Germany
| | - Shengfa Ye
- Max-Plank-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim an der Ruhr, Germany
| | - Jason England
- Division of Chemistry and Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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10
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Kim Y, Lee E. Stable Organic Radicals Derived from N‐Heterocyclic Carbenes. Chemistry 2018; 24:19110-19121. [PMID: 30058298 DOI: 10.1002/chem.201801560] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 06/23/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Youngsuk Kim
- Center for Self-assembly and ComplexityInstitute for Basic Science (IBS) Pohang 37673 Republic of Korea
- Department of ChemistryPohang University of Science and Technology Pohang 37673 Republic of Korea
| | - Eunsung Lee
- Center for Self-assembly and ComplexityInstitute for Basic Science (IBS) Pohang 37673 Republic of Korea
- Department of ChemistryPohang University of Science and Technology Pohang 37673 Republic of Korea
- Division of Advanced Materials SciencePohang University of Science and Technology Pohang 37673 Republic of Korea
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11
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Hernán-Gómez A, Uzelac M, Baillie SE, Armstrong DR, Kennedy AR, Fuentes MÁ, Hevia E. Molecular Manipulations of a Utility Nitrogen-Heterocyclic Carbene by Sodium Magnesiate Complexes and Transmetallation Chemistry with Gold Complexes. Chemistry 2018; 24:10541-10549. [PMID: 29750849 DOI: 10.1002/chem.201802008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Indexed: 01/17/2023]
Abstract
Expanding the scope and applications of anionic N-heterocyclic carbenes (NHCs), a novel series of magnesium NHC complexes is reported using a mixed sodium-magnesium approach. Sequential reactivity of classical imidazol- 2-ylidene carbene IPr with NaR and MgR2 (R=CH2 SiMe3 ) affords [(THF)3 Na(μ-IPr- )MgR2 (THF)] (2) [IPr- =:C{[N(2,6-iPr2 C6 H3 )]2 CHC] containing an anionic NHC ligand, whereas surprisingly sodium magnesiate [NaMgR3 ] fails to deprotonate IPr affording instead the redistribution coordination adduct [IPr2 Na2 MgR4 ] (1). Compound 2 undergoes selective C2-methylation when treated with MeOTf furnishing novel abnormal NHC complex [{aIPrMe MgR2 }2 ] (3). Dissolving 3 in THF led to the dissociation of this complex into MgR2 and aIPrMe with the latter isomerizing to the olefinic NHC IPr=CH2 . The ability of 2 and 3 to transfer their anionic and abnormal NHC ligands, respectively to AuI metal fragments has been investigated allowing the isolation and structural characterization of [RAu(μ-IPr- )MgR(THF)2 ] (4) and [aIPrMe AuR] (5) respectively. In both cases transfer of an alkyl R group is observed. However while 3 can also transfer its abnormal NHC ligand to give 5, in 4 the anionic NHC still remains coordinated to Mg via its C4 position, whereas the {AuR} fragment occupies the C2 position previously filled by a donor-solvated {Na(THF)3 }+ cation.
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Affiliation(s)
- Alberto Hernán-Gómez
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Marina Uzelac
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Sharon E Baillie
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - David R Armstrong
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Alan R Kennedy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - M Ángeles Fuentes
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Eva Hevia
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
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12
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Patel N, Arfeen M, Sood R, Khullar S, Chakraborti AK, Mandal SK, Bharatam PV. Can Remote N-Heterocyclic Carbenes Coordinate with Main Group Elements? Synthesis, Structure, and Quantum Chemical Analysis of N + -Centered Complexes. Chemistry 2018; 24:6418-6425. [PMID: 29504658 DOI: 10.1002/chem.201705999] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Indexed: 11/11/2022]
Abstract
Remote N-heterocyclic carbenes (rNHCs), such as N-methyl-4-pyridylidene, are known to form coordination complexes with TMs. Herein, it is established that rNHCs can also coordinate to the N+ centre. Synthesis of some novel divalent NI complexes with the general formula (rNHC)→N+ ←(NHC) and (rNHC)→N+ ←(rNHC) was achieved, and X-ray diffraction studies supported the coordination bond character between the rNHCs and the N+ centre. Quantum chemical analysis established the presence of divalent NI character at the central nitrogen in these systems.
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Affiliation(s)
- Neha Patel
- National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S., Nagar, 160 062, Punjab, India
| | - Minhajul Arfeen
- National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S., Nagar, 160 062, Punjab, India
| | - Radhika Sood
- National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S., Nagar, 160 062, Punjab, India
| | - Sadhika Khullar
- Department of Chemistry, D.A.V. University, Jalandhar-Pathankot National Highway, Jalandhar, 144012, Punjab, India
| | - Asit K Chakraborti
- National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S., Nagar, 160 062, Punjab, India
| | - Sanjay K Mandal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Sector 81, S.A.S., Nagar, 140 308, Punjab, India
| | - Prasad V Bharatam
- National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S., Nagar, 160 062, Punjab, India
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13
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Rottschäfer D, Ebeler F, Strothmann T, Neumann B, Stammler HG, Mix A, Ghadwal RS. The Viability of C5-Protonated- and C4,C5-Ditopic Carbanionic Abnormal NHCs: A New Dimension in NHC Chemistry. Chemistry 2018; 24:3716-3720. [DOI: 10.1002/chem.201800260] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Indexed: 01/10/2023]
Affiliation(s)
- Dennis Rottschäfer
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für, Anorganische Chemie und Strukturchemie, Centrum für, Molekulare Materialien, Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33615 Bielefeld Germany
| | - Falk Ebeler
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für, Anorganische Chemie und Strukturchemie, Centrum für, Molekulare Materialien, Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33615 Bielefeld Germany
| | - Till Strothmann
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für, Anorganische Chemie und Strukturchemie, Centrum für, Molekulare Materialien, Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33615 Bielefeld Germany
| | - Beate Neumann
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für, Anorganische Chemie und Strukturchemie, Centrum für, Molekulare Materialien, Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33615 Bielefeld Germany
| | - Hans-Georg Stammler
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für, Anorganische Chemie und Strukturchemie, Centrum für, Molekulare Materialien, Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33615 Bielefeld Germany
| | - Andreas Mix
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für, Anorganische Chemie und Strukturchemie, Centrum für, Molekulare Materialien, Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33615 Bielefeld Germany
| | - Rajendra S. Ghadwal
- Anorganische Molekülchemie und Katalyse, Lehrstuhl für, Anorganische Chemie und Strukturchemie, Centrum für, Molekulare Materialien, Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33615 Bielefeld Germany
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14
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Binder JF, Kosnik SC, Macdonald CLB. Assessing the Ligand Properties of NHC-Stabilised Phosphorus(I) Cations. Chemistry 2018; 24:3556-3565. [DOI: 10.1002/chem.201705224] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Justin F. Binder
- Department of Chemistry and Biochemistry; University of Windsor; 401 Sunset Ave. Windsor N9B 3P4 Ontario Canada
| | - Stephanie C. Kosnik
- Department of Chemistry and Biochemistry; University of Windsor; 401 Sunset Ave. Windsor N9B 3P4 Ontario Canada
| | - Charles L. B. Macdonald
- Department of Chemistry and Biochemistry; University of Windsor; 401 Sunset Ave. Windsor N9B 3P4 Ontario Canada
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15
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Lozano González M, Bousquet L, Hameury S, Alvarez Toledano C, Saffon-Merceron N, Branchadell V, Maerten E, Baceiredo A. Phosphine/Sulfoxide-Supported Carbon(0) Complex. Chemistry 2018; 24:2570-2574. [PMID: 29318686 DOI: 10.1002/chem.201705557] [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: 11/22/2017] [Indexed: 01/06/2023]
Abstract
A new carbon(0) complex 2 with two different L ligands, a phosphine and a sulfoxide, was synthesized and fully characterized. This new type of carbone exhibits excellent coordination ability, in contrast to the related phosphine/sulfide-supported carbon(0) complexes. Several organometallic complexes were isolated and, of special interest, the νav (CO) value of RhI -dicarbonyl complex indicates that 2 has a donor capability superior to classical NHCs.
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Affiliation(s)
- Mariana Lozano González
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France.,Instituto de Química-UNAM, Circuito Exterior, Ciudad Universitaria, Coyoacán C.P., 04510 Ciudad de, México, México
| | - Laura Bousquet
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France
| | - Sophie Hameury
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France
| | - Cecilio Alvarez Toledano
- Instituto de Química-UNAM, Circuito Exterior, Ciudad Universitaria, Coyoacán C.P., 04510 Ciudad de, México, México
| | - Nathalie Saffon-Merceron
- Université de Toulouse, UPS, and CNRS, ICT FR2599, 118 route de Narbonne, 31062, Toulouse, France
| | - Vicenç Branchadell
- Departament de Quimica, Universitat Autonoma de Barcelona, 08193, Bellaterra, Spain
| | - Eddy Maerten
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France
| | - Antoine Baceiredo
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 118 route de Narbonne, 31062, Toulouse, France
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16
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Liu SK, Shih WC, Chen WC, Ong TG. Carbodicarbenes and their Captodative Behavior in Catalysis. ChemCatChem 2018. [DOI: 10.1002/cctc.201701577] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Shu-kai Liu
- Institute of Chemistry; Academia Sinica; Taipei Taiwan, Republic of China
- Department of Applied Chemistry; National Chiao Tung University; Taiwan, Republic of China
- Sustainable Chemical Science and Technology, International Graduate Program; Academia Sinica and National Chiao Tung University; Taiwan, Republic of China
| | - Wei-Chih Shih
- Institute of Chemistry; Academia Sinica; Taipei Taiwan, Republic of China
| | - Wen-Ching Chen
- Institute of Chemistry; Academia Sinica; Taipei Taiwan, Republic of China
| | - Tiow-Gan Ong
- Institute of Chemistry; Academia Sinica; Taipei Taiwan, Republic of China
- Department of Applied Chemistry; National Chiao Tung University; Taiwan, Republic of China
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17
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Morosaki T, Iijima R, Suzuki T, Wang WW, Nagase S, Fujii T. Synthesis, Electronic Structure, and Reactivities of Two-Sulfur-Stabilized Carbones Exhibiting Four-Electron Donor Ability. Chemistry 2017; 23:8694-8702. [PMID: 28337803 DOI: 10.1002/chem.201700863] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Indexed: 01/06/2023]
Abstract
Bis(sulfane)carbon(0) (BSC; Ph2 S→C←SPh2 (1)) is successfully synthesized by deprotonation of the corresponding protonated salt 1⋅HTfO. The diprotonated salt 1⋅(HTfO)2 as the starting material can be also easily accessed by the deimination of iminosulfane(sulfane)carbon(0) (iSSC)⋅HBF4 . Density functional theory calculations revealed the peculiar electronic structure of 1, which has two lone pairs of electrons at the central carbon atom. The largest proton affinities (PA(1): 297.5 kcal mol-1 ; PA(2): 183.7 kcal mol-1 ) and the highest energy levels of the HOMOs (HOMO: -4.89 eV; HOMO-1: -5.02 eV) for 1 among the two-sulfur-stabilized carbones clearly indicate the strong donor ability of carbon center stabilized by two SII ligands. The donating ability of these lone pairs of electrons is demonstrated by the C-diaurated and C-proton-aurated complexes, which provide the first experimental evidence for two-sulfurstabilized carbones behaving as four-electron donors. Furthermore, the syntheses and application of AgI carbone complexes as carbone transfer agents are also reported.
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Affiliation(s)
- Tomohito Morosaki
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Ryo Iijima
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Tsubasa Suzuki
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
| | - Wei-Wei Wang
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Shigeru Nagase
- Fukui Institute for Fundamental Chemistry, Kyoto University, Kyoto, 606-8103, Japan
| | - Takayoshi Fujii
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Chiba, 275-8575, Japan
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18
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Troadec T, Wasano T, Lenk R, Baceiredo A, Saffon-Merceron N, Hashizume D, Saito Y, Nakata N, Branchadell V, Kato T. Donor-Stabilized Silylene/Phosphine-Supported Carbon(0) Center with High Electron Density. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702858] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Thibault Troadec
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | - Tatsuya Wasano
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | - Romaric Lenk
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | - Antoine Baceiredo
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | | | - Daisuke Hashizume
- Materials Characterization Support Unit; RIKEN Center for Emergent Matter Science (CEMS); Wako Saitama 351-0198 Japan
| | - Yosuke Saito
- Department of Chemistry, Graduate School of Science and Engineering Departament; Saitama University; Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
| | - Norio Nakata
- Department of Chemistry, Graduate School of Science and Engineering Departament; Saitama University; Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
| | - Vicenç Branchadell
- Departament de Química; Universitat Autònoma de Barcelona; 08193 Bellaterra Spain
| | - Tsuyoshi Kato
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
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19
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Troadec T, Wasano T, Lenk R, Baceiredo A, Saffon-Merceron N, Hashizume D, Saito Y, Nakata N, Branchadell V, Kato T. Donor-Stabilized Silylene/Phosphine-Supported Carbon(0) Center with High Electron Density. Angew Chem Int Ed Engl 2017; 56:6891-6895. [PMID: 28474846 DOI: 10.1002/anie.201702858] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Indexed: 11/08/2022]
Abstract
An isolable donor-stabilized silavinylidene phosphorane was synthesized. This molecule, which can also be regarded as a new carbon(0) complex featuring a phosphine and a donor-stabilized silylene ligand, presents a central carbon atom with a remarkably high electron density (-1.82). Furthermore, the experimental electron-density study of this compound demonstrates the delocalization of the σ-lone pair at the central carbon atom toward the silicon center, a feature which is remarkably different from electronic situation of other bent-allene-type molecules. This result clearly demonstrates the powerful electron-donating ability of donor-stabilized silylene ligands, as well as their excellent electron-acceptor properties.
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Affiliation(s)
- Thibault Troadec
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
| | - Tatsuya Wasano
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
| | - Romaric Lenk
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
| | - Antoine Baceiredo
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
| | - Nathalie Saffon-Merceron
- Université de Toulouse, UPS, and CNRS, ICT FR2599, 118 route de Narbonne, 31062, Toulouse, France
| | - Daisuke Hashizume
- Materials Characterization Support Unit, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan
| | - Yosuke Saito
- Department of Chemistry, Graduate School of Science and Engineering Departament, Saitama University, Shimo-okubo, Sakura-ku, Saitama, 338-8570, Japan
| | - Norio Nakata
- Department of Chemistry, Graduate School of Science and Engineering Departament, Saitama University, Shimo-okubo, Sakura-ku, Saitama, 338-8570, Japan
| | - Vicenç Branchadell
- Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Tsuyoshi Kato
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
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20
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Lyons DJM, Crocker RD, Blümel M, Nguyen TV. Promotion of Organic Reactions by Non‐Benzenoid Carbocyclic Aromatic Ions. Angew Chem Int Ed Engl 2016; 56:1466-1484. [DOI: 10.1002/anie.201605979] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Indexed: 12/12/2022]
Affiliation(s)
| | - Reece D. Crocker
- School of Chemistry University of New South Wales Sydney Australia
| | - Marcus Blümel
- School of Chemistry University of New South Wales Sydney Australia
- Institute of Organic Chemistry RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Thanh V. Nguyen
- School of Chemistry University of New South Wales Sydney Australia
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21
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Lyons DJM, Crocker RD, Blümel M, Nguyen TV. Vermittlung organischer Reaktionen durch nichtbenzoide carbocyclische aromatische Ionen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605979] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Reece D. Crocker
- School of Chemistry University of New South Wales Sydney Australien
| | - Marcus Blümel
- School of Chemistry University of New South Wales Sydney Australien
- Institut für Organische Chemie RWTH Aachen Landoltweg 1 52074 Aachen Deutschland
| | - Thanh V. Nguyen
- School of Chemistry University of New South Wales Sydney Australien
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