1
|
Knoell T, Polanco J, MacMillan SN, Bertke JA, Foroutan-Nejad C, Lancaster KM, 'Gus' Bakhoda A. Alkaline earth metal-assisted dinitrogen activation at nickel. Dalton Trans 2024; 53:4689-4697. [PMID: 38362644 PMCID: PMC10922974 DOI: 10.1039/d3dt03984f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Rare examples of trinuclear [Ni-N2-M-N2-Ni] core (M = Ca, Mg) with linear bridged dinitrogen ligands are reported in this work. The reduction of [iPr2NN]Ni(μ-Br)2Li(thf)2 (1) (iPr2NN = 2,4-bis-(2,6-diisopropylphenylimido)pentyl) with elemental Mg or Ca in THF under an atmosphere of dinitrogen yields the complex {iPr2NNNi(μ-N2)}2M (thf)4 (M = Mg, complex 2 and M = Ca, complex 3). The bridging end-on (μ-N2)2M(thf)4 moiety connects the two [iPr2NNNi]- nickelate fragments. A combination of X-ray crystallography, solution and solid-state spectroscopy have been applied to characterize complexes 2 and 3, and DFT studies have been used to help explain the bonding and electronic structure in these unique Ni-N2-Mg and Ni-N2-Ca complexes.
Collapse
Affiliation(s)
- Theresa Knoell
- Department of Chemistry Towson University, 8000 York Road, Towson, MD 21252, USA.
| | - Jocelyn Polanco
- Department of Chemistry Towson University, 8000 York Road, Towson, MD 21252, USA.
| | - Samantha N MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Jeffery A Bertke
- Georgetown University, Department of Chemistry, Washington, DC 20057, USA
| | - Cina Foroutan-Nejad
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Kyle M Lancaster
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | | |
Collapse
|
2
|
Jeong SY, Kim J, Lee E, Son KS. Ring-Opening Copolymerization Using a Chromium Complex with a Readily Available Aminotriphenolate Ligand. Organometallics 2023. [DOI: 10.1021/acs.organomet.2c00586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Seung Yeon Jeong
- Department of Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jaelim Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Kyung-sun Son
- Department of Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
| |
Collapse
|
3
|
Xie SJ, Wu RK, Huang YF, Chen HL, Zhang SQ, Liu F, Zhai DD, Hong X, Shi ZJ. Direct Incorporation of Dinitrogen into an Aliphatic C-H Bond. J Am Chem Soc 2023; 145:6773-6780. [PMID: 36821052 DOI: 10.1021/jacs.2c13086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The activation of dinitrogen (N2) and direct incorporation of its N atom into C-H bonds to create aliphatic C-N compounds remains unresolved. Incompatible conditions between dinitrogen reduction and C-H functionalization make this process extremely challenging. Herein, we report the first example of dinitrogen insertion into an aliphatic Csp3-H bond on the ligand scaffold of a 1,3-propane-bridged [N2N]2--type dititanium complex. Mechanistic investigations on the behaviors of dinuclear and mononuclear Ti complexes indicated the intramolecular synergistic effect of two Ti centers at a C-N bond-forming step. Computational studies revealed the critical isomerization between the inactive side-on N2 complex and the active nitridyl complex, which is responsible for the Csp3-H amination. This strategy maps an efficient route toward the future synthesis of aliphatic amines directly from N2.
Collapse
Affiliation(s)
- Si-Jun Xie
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Rong-Kai Wu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Yi-Fei Huang
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Hao-Lin Chen
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Shuo-Qing Zhang
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
| | - Feng Liu
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Dan-Dan Zhai
- Department of Chemistry, Fudan University, Shanghai 200438, China
| | - Xin Hong
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, Hangzhou 310024, China.,Beijing National Laboratory for Molecular Sciences, Zhongguancun North First Street No. 2, Beijing 100190, PR China
| | - Zhang-Jie Shi
- Department of Chemistry, Fudan University, Shanghai 200438, China.,State Key Laboratory of Organometallic Chemistry, SIOC, CAS, Shanghai 200032, China
| |
Collapse
|
4
|
Synthesis and structural analysis of titanium-μ-dinitrogen complex supported by di-anionic guanidinate ligands. Sci China Chem 2023. [DOI: 10.1007/s11426-022-1490-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
|
5
|
Tanabe Y, Nishibayashi Y. Recent advances in catalytic nitrogen fixation using transition metal–dinitrogen complexes under mild reaction conditions. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
6
|
del Horno E, Jover J, Mena M, Pérez‐Redondo A, Yélamos C. Dinitrogen Binding at a Trititanium Chloride Complex and Its Conversion to Ammonia under Ambient Conditions. Angew Chem Int Ed Engl 2022; 61:e202204544. [PMID: 35748604 PMCID: PMC9542190 DOI: 10.1002/anie.202204544] [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: 03/28/2022] [Indexed: 12/18/2022]
Abstract
Reaction of [TiCp*Cl3 ] (Cp*=η5 -C5 Me5 ) with one equivalent of magnesium in tetrahydrofuran at room temperature affords the paramagnetic trinuclear complex [{TiCp*(μ-Cl)}3 (μ3 -Cl)], which reacts with dinitrogen under ambient conditions to give the diamagnetic derivative [{TiCp*(μ-Cl)}3 (μ3 -η1 : η2 : η2 -N2 )] and the titanium(III) dimer [{TiCp*Cl(μ-Cl)}2 ]. The structure of the trinuclear mixed-valence complexes has been studied by experimental and theoretical methods and the latter compound represents the first well-defined example of the μ3 -η1 : η2 : η2 coordination mode of the dinitrogen molecule. The reaction of [{TiCp*(μ-Cl)}3 (μ3 -η1 : η2 : η2 -N2 )] with excess HCl in tetrahydrofuran results in clean NH4 Cl formation with regeneration of the starting material [TiCp*Cl3 ]. Therefore, a cyclic ammonia synthesis under ambient conditions can be envisioned by alternating N2 /HCl atmospheres in a [TiCp*Cl3 ]/Mg(excess) reaction mixture in tetrahydrofuran.
Collapse
Affiliation(s)
- Estefanía del Horno
- Departamento de Química Orgánica y Química InorgánicaInstituto de Investigación Química “Andrés M. del Río” (IQAR)Universidad de Alcalá28805Alcalá de Henares-MadridSpain
| | - Jesús Jover
- Secció de Química InorgànicaDepartament de Química Inorgànica i OrgànicaInstitut de Química Teòrica i Computacional (IQTC-UB)Universitat de BarcelonaMartí i Franquès 1-1108028BarcelonaSpain
| | - Miguel Mena
- Departamento de Química Orgánica y Química InorgánicaInstituto de Investigación Química “Andrés M. del Río” (IQAR)Universidad de Alcalá28805Alcalá de Henares-MadridSpain
| | - Adrián Pérez‐Redondo
- Departamento de Química Orgánica y Química InorgánicaInstituto de Investigación Química “Andrés M. del Río” (IQAR)Universidad de Alcalá28805Alcalá de Henares-MadridSpain
| | - Carlos Yélamos
- Departamento de Química Orgánica y Química InorgánicaInstituto de Investigación Química “Andrés M. del Río” (IQAR)Universidad de Alcalá28805Alcalá de Henares-MadridSpain
| |
Collapse
|
7
|
Yelamos C, del Horno E, Jover J, Mena M, Perez-Redondo A. Dinitrogen Binding at a Trititanium Chloride Complex and Its Conversion to Ammonia under Ambient Conditions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Carlos Yelamos
- Universidad de Alcala Quimica Organica y Quimica Inorganica Campus Universitario, Edificio Farmacia 28805 Alcala de Henares SPAIN
| | - Estefania del Horno
- Universidad de Alcala Departamento de Quimica Organica y Quimica Inorganica Edificio de Farmacia, Campus Universitario 28805 Alcalá de Henares, Madrid SPAIN
| | - Jesus Jover
- Universitat de Barcelona Facultat de Quimica Deapartment de Quimica Inorganica i Organica Marti i Franques 1-11 08028 Barcelona SPAIN
| | - Miguel Mena
- Universidad de Alcala Departamento de Quimica Organica y Quimica Inorganica Edificio de Farmacia, Campus Universitario 28805 Alcalá de Henares, Madrid SPAIN
| | - Adrian Perez-Redondo
- Universidad de Alcala Departamento de Quimica Organica y Quimica Inorganica Edificio de Farmacia, Campus Universitario 28805 Alcalá de Henares, Madrid SPAIN
| |
Collapse
|
8
|
Okuda J, Okumura A, Ghana P, Fink F, Schmidt R, Hoffmann A, Spaniol TP, Herres-Pawlis S. Formate Complexes of Tri- and Tetravalent Titanium Supported by a Tris(phenolato)amine Ligand. Dalton Trans 2022; 51:14345-14351. [DOI: 10.1039/d2dt01739c] [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
Titanium(III) and titanium(IV) formate complexes supported by the sterically encumbering tris(phenolato)amine ligand (H3(O3N) = tris(4,6-di-tert-butyl-2-hydroxybenzyl)amine) are described. Salt metathesis of the chlorido precursor [(O3N)TiCl] (1-Cl) with sodium formate in a...
Collapse
|
9
|
Bae DY, Lee G, Lee E. Reduction of highly bulky triphenolamine molybdenum nitrido and chloride complexes. Dalton Trans 2021; 50:14139-14143. [PMID: 34635894 DOI: 10.1039/d1dt02375f] [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
Transition metal nitrides are key intermediates in the catalytic reduction of dinitrogen to ammonia. To date, transition metal nitride complexes with the triphenolamine (TPA) ligand have not been reported and the system with the ligand has been much less studied for ammonia formation compared with other systems. Herein, we report a series of molybdenum complexes supported by a sterically demanding TPA ligand, including a nitrido complex NMo(TPA). We achieved the stoichiometric conversion of the nitride moiety into ammonia under ambient conditions by adding proton and electron sources to NMo(TPA). However, the catalytic turnover for N2 reduction to ammonia was not observed in the triphenolamine ligand system unlike the Schrock system-triamidoamine ligand. Density functional theory calculation revealed that the molybdenum center favors binding NH3 over N2 by 16.9 kcal mol-1 and the structural lability of the trigonal bipyramidal (TBP) molybdenum complex seems to prevent catalytic turnover. Our systematic study showed that the electronegativity and bond length of ancillary ligands determine the preference between N2 and NH3, suggesting a systematic design strategy for improvement.
Collapse
Affiliation(s)
- Dae Young Bae
- Department of Chemistry, Pohang University of Science and Technology, 77 Cheongam-Ro, 37673, Pohang, Republic of Korea.
| | - Gunhee Lee
- Department of Chemistry, Pohang University of Science and Technology, 77 Cheongam-Ro, 37673, Pohang, Republic of Korea.
| | - Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology, 77 Cheongam-Ro, 37673, Pohang, Republic of Korea.
| |
Collapse
|