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Jameei Moghaddam N, Gil-Sepulcre M, Wang JW, Benet-Buchholz J, Gimbert-Suriñach C, Llobet A. Interplay between β-Diimino and β-Diketiminato Ligands in Nickel Complexes Active in the Proton Reduction Reaction. Inorg Chem 2022; 61:16639-16649. [PMID: 36196853 PMCID: PMC9597662 DOI: 10.1021/acs.inorgchem.2c02150] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two Ni complexes are reported with κ4-P2N2 β-diimino (BDI) ligands with the general formula [Ni(XBDI)](BF4)2, where BDI is N-(2-(diphenylphosphaneyl)ethyl)-4-((2-(diphenylphosphaneyl)ethyl)imino)pent-2-en-2-amine and X indicates the substituent in the α-carbon intradiimine position, X = H for 1(BF4)2 and X = Ph for 2(BF4)2. Electrochemical analysis together with UV-vis and NMR spectroscopy in acetonitrile and dimethylformamide (DMF) indicates the conversion of the β-diimino complexes 12+ and 22+ to the negatively charged β-diketiminato (BDK) analogues (1-H)+ and (2-H)+ via deprotonation in DMF. Moreover, further electrochemical and spectroscopy evidence indicates that the one-electron-reduced derivatives 1+ and 2+ can also rapidly evolve to the BDK (1-H)+ and (2-H)+, respectively, via hydrogen gas evolution through a bimolecular homolytic pathway. Finally, both complexes are demonstrated to be active for the proton reduction reaction in DMF at Eapp = -1.8 V vs Fc+/0, being the active species the one-electron-reduced derivative 1-H and 2-H.
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Affiliation(s)
- Navid Jameei Moghaddam
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007Tarragona, Spain.,Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, Marcel·lí Domingo s/n, 43007Tarragona, Spain
| | - Marcos Gil-Sepulcre
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007Tarragona, Spain
| | - Jia-Wei Wang
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007Tarragona, Spain
| | - Jordi Benet-Buchholz
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007Tarragona, Spain
| | - Carolina Gimbert-Suriñach
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007Tarragona, Spain.,Departament de Química, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193Barcelona, Spain
| | - Antoni Llobet
- Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avda. Països Catalans 16, 43007Tarragona, Spain.,Departament de Química, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193Barcelona, Spain
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2
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Li B, Huse K, Wölper C, Schulz S. Synthesis and reactivity of heteroleptic zinc(I) complexes toward heteroallenes. Chem Commun (Camb) 2021; 57:13692-13695. [PMID: 34842862 DOI: 10.1039/d1cc05617d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heteroleptic zinc(I) complexes L1,2Zn-ZnCp* (L1 = HC[C(CF3)NC6F5]21; L2 = HC[C(Me)NDipp]2; Dipp = 2,6-i-Pr2C6H32) are synthesized by reactions of Cp*2Zn2 with L1H and L2ZnH. 2 reacts with t-BuNCO to give unprecedented carbamate complex (4), while reactions with RN3 gave bis-hexazene, triazenide, and trimeric azide complexes (5-7).
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Affiliation(s)
- Bin Li
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45117 Essen, Germany.
| | - Kevin Huse
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45117 Essen, Germany.
| | - Christoph Wölper
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45117 Essen, Germany.
| | - Stephan Schulz
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45117 Essen, Germany.
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3
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Ziółkowska A, Szynkiewicz N, Pikies J, Ponikiewski Ł. Synthesis of compounds with C-P-P and C[double bond, length as m-dash]P-P bond systems based on the phospha-Wittig reaction. Dalton Trans 2020; 49:13635-13646. [PMID: 32975265 DOI: 10.1039/d0dt02728f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A reactivity study of a β-diketiminate titanium(iii) phosphanylphosphido complex [MeNacNacTi(Cl){η2-P(SiMe3)-PtBu2}] (1) towards ketones such as benzophenone, 9-fluorenone, acetophenone, cyclopentanone, cyclohexanone and cycloheptanone is reported. The reactions of 1 with aromatic ketones (without α-protons) directly lead to the Ti(iii) complex [MeNacNacTi(μ2-Cl)(OSiMe3)] (5) and Ti(iv) complexes with the pinacol condensation product [MeNacNacTi(OSiMe3)(η2-pinacolate)] (3), and phosphanylphosphaalkenes Ph2C[double bond, length as m-dash]P-PtBu2 (2) and (fluorenyl)C[double bond, length as m-dash]P-PtBu2 (6), respectively. The reaction with acetophenone leads to the titanium(iii) complex with the aldol condensation product as ligand [MeNacNacTi(Cl){OC{Me(Ph)}CH2(C[double bond, length as m-dash]O)Ph}] (8) and in parallel to phosphanylphosphaalkene (Ph)MeC[double bond, length as m-dash]P-PtBu2 (9) and 5. The reactions of 1 with cyclic ketones (cyclopentanone and cyclohexanone) lead to Ti(iii) complexes [{(ArN[double bond, length as m-dash]C(Me)CHC(Me)[double bond, length as m-dash]NAr)((CH2)4CO)}Ti(Cl){PtBu2-P(SiMe3)((CH2)4CO)}] (10) and [{(ArN[double bond, length as m-dash]C(Me)CHC(Me)[double bond, length as m-dash]NAr)((CH2)5CO)}Ti(Cl){PtBu2-P(SiMe3)((CH2)5CO)}] (11), which are formed via the successive insertion of two molecules of ketone to one molecule of 1. The stability investigation of complexes 10 and 11 in a polar solvent (THF) revealed that under these conditions, the complexes decompose, resulting in titanium(iii) complexes with aldol condensation products and the expected phosphanylphosphaalkenes (CH2)4C[double bond, length as m-dash]P-PtBu2 (10a) and (CH2)5C[double bond, length as m-dash]P-PtBu2 (11a). In the reaction of 1 with cycloheptanone, only the Ti(iii) complex with the aldol condensation product [MeNacNacTi(Cl){OC(CH2)6}CH(C[double bond, length as m-dash]O)(CH2)5] (12) was isolated. The structures 3, 5, 8, 10, 11, 11b and 12 were characterized by X-ray spectroscopy, while all the phosphanylphosphaalkenes were characterized by NMR spectroscopy.
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Affiliation(s)
- Aleksandra Ziółkowska
- Gdansk University of Technology, Faculty of Chemistry, Department of Inorganic Chemistry, Gabriela Narutowicza Str. 11/12, 80-233 Gdansk, Poland.
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4
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Li B, Wölper C, Huse K, Schulz S. Intermediate snapshot on the insertion reaction of isocyanates into the Zn-Cp* bond of dizincocene Cp* 2Zn 2. Chem Commun (Camb) 2020; 56:8643-8646. [PMID: 32601630 DOI: 10.1039/d0cc03831h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heteroleptic Zn(i) complexes Cp*Zn-Zn(N(R)C(Cp*)O) (R = Dipp = 2,6-i-Pr2-C6H32, t-Bu 3) with unsymmetrically η4-coordinated Cp* substituents represent snapshots of the insertion reaction of RNCO into the Zn-Cp* bond of Cp*2Zn21. The bonding situation in 2 and 3, which represent the first Zn(i) olefin complexes, was evaluated by computational calculation and further compared to other Zn(i) complexes.
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Affiliation(s)
- Bin Li
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45117 Essen, Germany.
| | - Christoph Wölper
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45117 Essen, Germany.
| | - Kevin Huse
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45117 Essen, Germany.
| | - Stephan Schulz
- Institute of Inorganic Chemistry and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45117 Essen, Germany.
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5
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Kaiser K, Ganesamoorthy C, Wölper C, Schulz S. Metal Complexes of Donor‐functionalized Fluorinated
β
‐Ketoiminates – Synthesis, Structure, and CVD Application. Z Anorg Allg Chem 2019. [DOI: 10.1002/zaac.201900239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kevin Kaiser
- Institute for Inorganic Chemistry and Center for Nanointegration Duisburg‐Essen (Cenide) University of Duisburg‐Essen Universitätsstraße 5–7 45117 Essen Germany
| | - Chelladurai Ganesamoorthy
- Institute for Inorganic Chemistry and Center for Nanointegration Duisburg‐Essen (Cenide) University of Duisburg‐Essen Universitätsstraße 5–7 45117 Essen Germany
| | - Christoph Wölper
- Institute for Inorganic Chemistry and Center for Nanointegration Duisburg‐Essen (Cenide) University of Duisburg‐Essen Universitätsstraße 5–7 45117 Essen Germany
| | - Stephan Schulz
- Institute for Inorganic Chemistry and Center for Nanointegration Duisburg‐Essen (Cenide) University of Duisburg‐Essen Universitätsstraße 5–7 45117 Essen Germany
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6
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Webster RL. β-Diketiminate complexes of the first row transition metals: applications in catalysis. Dalton Trans 2017; 46:4483-4498. [DOI: 10.1039/c7dt00319f] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Although β-diketiminate complexes have been widely explored in stoichiometric studies, their use as catalysts is largely underdeveloped.
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7
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Bayram M, Gondzik S, Bläser D, Wölper C, Schulz S. Syntheses and Structures of Zinc Bis(phosphinimino)methanide Complexes. Z Anorg Allg Chem 2016. [DOI: 10.1002/zaac.201600196] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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8
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Ganesamoorthy C, Matthias M, Bläser D, Wölper C, Schulz S. Lewis acid–base adducts of group 13 elements: synthesis, structure and reactivity toward benzaldehyde. Dalton Trans 2016; 45:11437-44. [DOI: 10.1039/c6dt01688j] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
[LGa-M(C6F5)3] (M = B 1, Al 2, Ga 3) reacts with benzaldehyde in different ways including the formation of the zwitterionic species [LGa(C6F5){CH(Ph)(OAl(C6F5)2)}] (5).
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Affiliation(s)
- C. Ganesamoorthy
- Institute of Inorganic Chemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - M. Matthias
- Institute of Inorganic Chemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - D. Bläser
- Institute of Inorganic Chemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - C. Wölper
- Institute of Inorganic Chemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
| | - S. Schulz
- Institute of Inorganic Chemistry
- University of Duisburg-Essen
- 45117 Essen
- Germany
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9
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Camp C, Arnold J. On the non-innocence of “Nacnacs”: ligand-based reactivity in β-diketiminate supported coordination compounds. Dalton Trans 2016; 45:14462-98. [DOI: 10.1039/c6dt02013e] [Citation(s) in RCA: 133] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
While β-diketiminate (BDI or ‘nacnac’) ligands have been widely adopted to stabilize a wide range of metal ions in multiple oxidation states and coordination numbers, in several occurrences these ligands do not behave as spectators and participate in reactivity.
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Affiliation(s)
- Clément Camp
- Univ Lyon
- CNRS, ESCPE Lyon
- Université Claude Bernard Lyon 1
- C2P2 UMR 5265
- F-69616 Villeurbanne
| | - John Arnold
- Department of Chemistry
- University of California
- Berkeley
- USA
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10
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Bayram M, Bläser D, Wölper C, Schulz S. Synthesis and X-ray Crystal Structure of Diimidosulfinate Transition Metal Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00407] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Melike Bayram
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
| | - Dieter Bläser
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
| | - Christoph Wölper
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
| | - Stephan Schulz
- Institute
of Inorganic Chemistry, University of Duisburg-Essen, Universitätsstr. 5-7, D-45117 Essen, Germany
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