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Ghosh B, Banerjee A, Roy L, Manna RN, Nath R, Paul A. The Role of Copper Salts and O
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in the Mechanism of C≡N Bond Activation for Facilitating Nitrogen Transfer Reactions**. Angew Chem Int Ed Engl 2022; 61:e202116868. [DOI: 10.1002/anie.202116868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Indexed: 11/12/2022]
Affiliation(s)
- Boyli Ghosh
- School of Chemical Sciences Indian Association for the Cultivation of Science 2A & 2B, Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Ambar Banerjee
- Department of Physics Stockholm University Frescativägen 11419 Stockholm Sweden
| | - Lisa Roy
- Institute of Chemical Technology Mumbai – IOC Odisha Campus Bhubaneswar IIT Kharagpur Extension Centre Bhubaneswar 751013 India
| | - Rabindra Nath Manna
- School of Chemical Sciences Indian Association for the Cultivation of Science 2A & 2B, Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Rounak Nath
- School of Chemical Sciences Indian Association for the Cultivation of Science 2A & 2B, Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Ankan Paul
- School of Chemical Sciences Indian Association for the Cultivation of Science 2A & 2B, Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
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2
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Ghosh B, Banerjee A, Roy L, Manna RN, Nath R, Paul A. The Role of Copper Salts and O
2
in the Mechanism of C≡N Bond Activation for Facilitating Nitrogen Transfer Reactions**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Boyli Ghosh
- School of Chemical Sciences Indian Association for the Cultivation of Science 2A & 2B, Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Ambar Banerjee
- Department of Physics Stockholm University Frescativägen 11419 Stockholm Sweden
| | - Lisa Roy
- Institute of Chemical Technology Mumbai – IOC Odisha Campus Bhubaneswar IIT Kharagpur Extension Centre Bhubaneswar 751013 India
| | - Rabindra Nath Manna
- School of Chemical Sciences Indian Association for the Cultivation of Science 2A & 2B, Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Rounak Nath
- School of Chemical Sciences Indian Association for the Cultivation of Science 2A & 2B, Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
| | - Ankan Paul
- School of Chemical Sciences Indian Association for the Cultivation of Science 2A & 2B, Raja S. C. Mullick Road Jadavpur Kolkata 700032 India
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3
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Wu Q, Luo Y, Lei A, You J. Aerobic Copper-Promoted Radical-Type Cleavage of Coordinated Cyanide Anion: Nitrogen Transfer to Aldehydes To Form Nitriles. J Am Chem Soc 2016; 138:2885-8. [PMID: 26907853 DOI: 10.1021/jacs.5b10945] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qian Wu
- Key
Laboratory of Green Chemistry and Technology of Ministry of Education,
College of Chemistry, and State Key Laboratory of Biotherapy, West
China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Yi Luo
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Aiwen Lei
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Jingsong You
- Key
Laboratory of Green Chemistry and Technology of Ministry of Education,
College of Chemistry, and State Key Laboratory of Biotherapy, West
China Medical School, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
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4
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Robinson R, Shaw MF, Stranger R, Yates BF. Theoretical study of the mechanism for the sequential N–O and N–N bond cleavage within N2O adducts of N-heterocyclic carbenes by a vanadium(iii) complex. Dalton Trans 2016; 45:1047-54. [DOI: 10.1039/c5dt03600c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The addition of N-heterocyclic carbene (NHC) increases the activity of N2O towards cleavage of both the N–O and N–N bonds.
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Affiliation(s)
- Robert Robinson
- School of Physical Sciences (Chemistry)
- University of Tasmania
- Hobart
- Australia
| | - Miranda F. Shaw
- School of Physical Sciences (Chemistry)
- University of Tasmania
- Hobart
- Australia
| | - Robert Stranger
- Research School of Chemistry
- Australian National University
- Canberra
- Australia
| | - Brian F. Yates
- School of Physical Sciences (Chemistry)
- University of Tasmania
- Hobart
- Australia
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5
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Robinson R, Abbasi KK, Ariafard A, Stranger R, Yates BF. Sulfur Dioxide Activation: A Theoretical Investigation into Dual S═O Bond Cleavage by Three-Coordinate Molybdenum(III) Complexes. Inorg Chem 2015; 54:534-43. [DOI: 10.1021/ic502298j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Robert Robinson
- School
of Physical Sciences - Chemistry, University of Tasmania, Private
Bag 75, Hobart TAS 7001, Australia
| | - Kiana Khadem Abbasi
- Department
of Chemistry, Faulty of Science, Central Tehran Branch, Islamic Azad University, Shahrak Gharb, Tehran, Iran
| | - Alireza Ariafard
- School
of Physical Sciences - Chemistry, University of Tasmania, Private
Bag 75, Hobart TAS 7001, Australia
- Department
of Chemistry, Faulty of Science, Central Tehran Branch, Islamic Azad University, Shahrak Gharb, Tehran, Iran
| | - Robert Stranger
- Research
School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Brian F. Yates
- School
of Physical Sciences - Chemistry, University of Tasmania, Private
Bag 75, Hobart TAS 7001, Australia
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6
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Shaw MF, Mahdizadeh Ghohe N, Ariafard A, Brookes NJ, Stranger R, Yates BF. NO2 bond cleavage by MoL3 complexes. Dalton Trans 2014; 43:1620-9. [PMID: 24217121 DOI: 10.1039/c3dt52554f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The cleavage of one N-O bond in NO2 by two equivalents of Mo(NRAr)3 has been shown to occur to form molybdenum oxide and nitrosyl complexes. The mechanism and electronic rearrangement of this reaction was investigated using density functional theory, using both a model Mo(NH2)3 system and the full [N((t)Bu)(3,5-dimethylphenyl)] experimental ligand. For the model ligand, several possible modes of coordination for the resulting complex were observed, along with isomerisation and bond breaking pathways. The lowest barrier for direct bond cleavage was found to be via the singlet η(2)-N,O complex (7 kJ mol(-1)). Formation of a bimetallic species was also possible, giving an overall decrease in energy and a lower barrier for reaction (3 kJ mol(-1)). Results for the full ligand showed similar trends in energies for both isomerisation between the different isomers, and for the mononuclear bond cleavage. The lowest calculated barrier for cleavage was only 21 kJ mol(-1)via the triplet η(1)-O isomer, with a strong thermodynamic driving force to the final products of the doublet metal oxide and a molecule of NO. Formation of the full ligand dinuclear complex was not accompanied by an equivalent decrease in energy seen with the model ligand. Direct bond cleavage via an η(1)-O complex is thus the likely mechanism for the experimental reaction that occurs at ambient temperature and pressure. Unlike the other known reactions between MoL3 complexes and small molecules, the second equivalent of the metal does not appear to be necessary, but instead irreversibly binds to the released nitric oxide.
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Affiliation(s)
- Miranda F Shaw
- School of Chemistry, University of Tasmania, Private Bag 75, Hobart, TAS 7001, Australia.
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Cavigliasso G, Criddle A, Kim HS, Stranger R, Yates BF. On the selective cleavage of nitrous oxide by metal–amide complexes. Dalton Trans 2014; 43:4631-4. [DOI: 10.1039/c3dt53062k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The remarkable selective cleavage of nitrous oxide by metal–amide systems, involving a bimetallic mechanism, has been investigated using computational methodology and rationalized on the basis of the interplay of structural and bonding factors.
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Affiliation(s)
- G. Cavigliasso
- Research School of Chemistry
- Australian National University
- Canberra, Australia
| | - A. Criddle
- Research School of Chemistry
- Australian National University
- Canberra, Australia
| | - H.-S. Kim
- Research School of Chemistry
- Australian National University
- Canberra, Australia
| | - R. Stranger
- Research School of Chemistry
- Australian National University
- Canberra, Australia
| | - B. F. Yates
- School of Chemistry
- University of Tasmania
- Hobart, Australia
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Du JL, Zhu XL, Yang XY, Shen TL, Li LJ. Ni(II) and Cu(II) Complexes of Pyridyl-Pyrazole Ligands: Syntheses, Crystal Structures and Influence of Metal Ion. JOURNAL OF CHEMICAL RESEARCH 2012. [DOI: 10.3184/174751912x13497101646885] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The ligand 3-(2-pyridyl)pyrazol-1-yl acetic acid (HL) has been prepared and the complexes [Ni(L)(N3)] n and [Cu(L‘)2(H2O)2] n [HL‘ = 3-(2-pyridyl)pyrazole] have been synthesised by reaction of HL and NaN3 with NiCl2·6H2O and CuCl2·2H2O under hydrothermal condition. Single-crystal X-ray diffraction analysis shows that [Ni(L)(N3)] n possesses a 1D infinite chain structure, which further forms a 2D supramolecular framework connected by π···π weak interactions, and [Cu(L‘)2(H2O)2] n is linked to form a 1D chain by π···π weak interactions, then to a 2D supramolecular structure by weak C–H···O interactions.
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Affiliation(s)
- Jian-Long Du
- College of Chemistry and Environmental Science, and Chemical Biology Key Laboratory of Hebei Province, Hebei University, Baoding 071002, P. R. China
| | - Xiao-Long Zhu
- College of Chemistry and Environmental Science, and Chemical Biology Key Laboratory of Hebei Province, Hebei University, Baoding 071002, P. R. China
| | - Xiao-Yan Yang
- College of Chemistry and Environmental Science, and Chemical Biology Key Laboratory of Hebei Province, Hebei University, Baoding 071002, P. R. China
| | - Tian-Li Shen
- College of Chemistry and Environmental Science, and Chemical Biology Key Laboratory of Hebei Province, Hebei University, Baoding 071002, P. R. China
| | - Li-Jun Li
- College of Chemistry and Environmental Science, and Chemical Biology Key Laboratory of Hebei Province, Hebei University, Baoding 071002, P. R. China
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Cavigliasso G, Stranger R, Yates BF. Dinitrogen metal complexes with a strongly activated N-N bond: a computational investigation of [(Cy2N)3Nb-(μ-NN)-Nb(NCy2)3] and related [Nb-(μ-NN)-Nb] systems. Dalton Trans 2012; 41:13948-59. [PMID: 23026839 DOI: 10.1039/c2dt31845h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The structural and bonding properties of the dinitrogen-bridged diniobium [(Cy(2)N)(3)Nb(μ-NN)Nb(NCy(2))(3)] complex experimentally characterized by Berno and Gambarotta, which exhibits a strongly activated N-N bond of 134 pm, have been explored using density functional methods and compared with those of a series of related [(R(2)N)(3)Nb(μ-NN)Nb(NR(2))(3)] (R = H, Me, (i)Pr, (t)Bu, Cy) model species and other experimentally relevant [Nb(μ-NN)Nb] systems, in order to rationalize the unusually long N-N distance. Geometry optimizations of [(Cy(2)N)(3)Nb(μ-NN)Nb(NCy(2))(3)] and three other known systems indicate that the most favourable N-N distance lies within the range of commonly reported results for end-on bound dinitrogen-diniobium complexes, between 123 and 128 pm. However, structures exhibiting appreciably longer N-N distances, close to 134 pm, are found to be only weakly disfavoured, and may represent the preferred geometry in cases where lengthening of the N-N bond counteracts the effects of highly repulsive steric interactions between terminal fragments. Calculations on model complexes, in which small-sized [R = H, Me] terminal groups are involved, support the finding that N-N bond lengths within the 123-128 pm range are most favoured, whereas calculations on larger [R = (i)Pr, (t)Bu] model species indicate that the presence of excessively repulsive intramolecular interactions can lead to substantial changes in the geometric properties of the [Nb-NN-Nb] core, including significant increase in N-N bond length and activation. The preference for N-N distances ranging between 123 and 128 pm, irrespective of ligand size and identity, can be understood on the basis that the principal bonding mechanisms across the central [Nb-NN-Nb] core are largely unaffected by changes in the chemical composition and properties of terminal fragments. However, the balance between repulsive (steric) and attractive (electrostatic plus orbital) bonding contributions can be altered by the presence of geometrically rigid and oversized peripheral groups and, in these cases, the interplay between repulsive and attractive bonding effects is dominated by the former and can result in abnormally elongated N-N distances. The present calculations thus provide a rationale for the observed structural properties of the [(Cy(2)N)(3)Nb(μ-NN)Nb(NCy(2))(3)] system on the basis of the interplay between electronic and steric factors.
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Affiliation(s)
- Germán Cavigliasso
- Research School of Chemistry, Australian National University, Canberra ACT, Australia
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10
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Li S, Tang Z, Gong Q, Yu X, Beaumont PR, Jensen CM. Phenyl introduced ammonium borohydride: synthesis and reversible dehydrogenation properties. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm34766k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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