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Cobalt(I) Pincer Complexes: Four‐ versus Five‐coordination. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Skubi KL, Hooper RX, Mercado BQ, Bollmeyer MM, MacMillan SN, Lancaster KM, Holland PL. Iron Complexes of a Proton-Responsive SCS Pincer Ligand with a Sensitive Electronic Structure. Inorg Chem 2022; 61:1644-1658. [PMID: 34986307 PMCID: PMC8792349 DOI: 10.1021/acs.inorgchem.1c03499] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Sulfur/carbon/sulfur pincer ligands have an interesting combination of strong-field and weak-field donors, a coordination environment that is also present in the nitrogenase active site. Here, we explore the electronic structures of iron(II) and iron(III) complexes with such a pincer ligand, bearing a monodentate phosphine, thiolate S donor, amide N donor, ammonia, or CO. The ligand scaffold features a proton-responsive thioamide site, and the protonation state of the ligand greatly influences the reduction potential of iron in the phosphine complex. The N-H bond dissociation free energy, derived from the Bordwell equation, is 56 ± 2 kcal/mol. Electron paramagnetic resonance (EPR) spectroscopy and superconducting quantum interference device (SQUID) magnetometry measurements show that the iron(III) complexes with S and N as the fourth donors have an intermediate spin (S = 3/2) ground state with a large zero field splitting, and X-ray absorption spectra show a high Fe-S covalency. The Mössbauer spectrum changes drastically with the position of a nearby alkali metal cation in the iron(III) amido complex, and density functional theory calculations explain this phenomenon through a change between having the doubly occupied orbital as dz2 or dyz, as the former is more influenced by the nearby positive charge.
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Affiliation(s)
- Kazimer L. Skubi
- Department of Chemistry, Yale University, New Haven, Connecticut 06511
| | - Reagan X. Hooper
- Department of Chemistry, Yale University, New Haven, Connecticut 06511
| | | | - Melissa M. Bollmeyer
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853
| | - Kyle M. Lancaster
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853
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Deng R, Wang C, Milton M, Tang D, Hollingsworth AD, Weck M. Side-chain functionalized supramolecular helical brush copolymers. Polym Chem 2021. [DOI: 10.1039/d1py00373a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The construction of a supramolecular brush copolymer featuring a helical backbone is described. The pendant chains are grafted onto the backbone through metal coordination.
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Affiliation(s)
- Ru Deng
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
| | - Chengyuan Wang
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
| | - Margarita Milton
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
| | - Danni Tang
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
| | - Andrew D. Hollingsworth
- Department of Physics and Center for Soft Matter Research, New York University, New York, NY 10003, USA
| | - Marcus Weck
- Department of Chemistry and Molecular Design Institute, New York University, New York, NY 10003, USA
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Jia AQ, Shi LM, Wu F, Xin ZF, Zhang QF. Syntheses, structures and immobilization of ruthenium complexes bearing N , O -Schiff-base or N , N′ -diamine ligands functionalized with alkoxysilyl groups. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2017.12.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Behnia A, Boyle PD, Fard MA, Blacquiere JM, Puddephatt RJ. Pincer-plus-one ligands in self-assembly with palladium(ii): a molecular square and a molecular tetrahedron. Dalton Trans 2016; 45:19485-19490. [PMID: 27891539 DOI: 10.1039/c6dt04264c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The combination of a palladium(ii) precursor with a diimine-phenol ligand and an oxidant (H2O2 or O2) under different conditions has, serendipitously, given both a molecular square and a molecular tetrahedron by self-assembly of building blocks comprising palladium(ii) centres coordinated to the oxidised forms of the ligand.
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Affiliation(s)
- Ava Behnia
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7.
| | - Paul D Boyle
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7.
| | - Mahmood A Fard
- Department of Chemistry, University of Western Ontario, London, Canada N6A 5B7.
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MacInnis MC, DeMott JC, Zolnhofer EM, Zhou J, Meyer K, Hughes RP, Ozerov OV. Cationic Two-Coordinate Complexes of Pd(I) and Pt(I) Have Longer Metal-Ligand Bonds Than Their Neutral Counterparts. Chem 2016. [DOI: 10.1016/j.chempr.2016.11.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Shi LM, Wang XX, Ma XF, Jia AQ, Zhang QF. Ruthenium(III)-carbonyl and ruthenium(II)-nitrosyl complexes of nitrogen-containing ligands with ethoxysilane groups. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1216108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Li-Miao Shi
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, PR China
| | - Xin-Xin Wang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, PR China
| | - Xiu-Fang Ma
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, PR China
| | - Ai-Quan Jia
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, PR China
| | - Qian-Feng Zhang
- Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma’anshan, PR China
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Horak KT, VanderVelde DG, Agapie T. Tuning of Metal Complex Electronics and Reactivity by Remote Lewis Acid Binding to π-Coordinated Pyridine Diphosphine Ligands. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00562] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kyle T. Horak
- Division of Chemistry and
Chemical Engineering, California Institute of Technology, 1200 East
California Boulevard MC 127-72, Pasadena, California 91125, United States
| | - David G. VanderVelde
- Division of Chemistry and
Chemical Engineering, California Institute of Technology, 1200 East
California Boulevard MC 127-72, Pasadena, California 91125, United States
| | - Theodor Agapie
- Division of Chemistry and
Chemical Engineering, California Institute of Technology, 1200 East
California Boulevard MC 127-72, Pasadena, California 91125, United States
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Karami K, Abedanzadeh S, Yadollahi F, Büyükgüngör O, Farrokhpour H, Rizzoli C, Lipkowski J. Mono- and binuclear orthopalladated complexes of phosphorus ylides containing nitrogen, phosphorus or bridging diphosphine ligands: Self-assembly, theoretical calculations and comparative catalytic activity. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.01.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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García-Eleno MA, Padilla-Mata E, Estudiante-Negrete F, Pichal-Cerda F, Hernández-Ortega S, Toscano RA, Morales-Morales D. Single step, high yield synthesis of para-hydroxy functionalized POCOP ligands and their Ni(ii) pincer derivatives. NEW J CHEM 2015. [DOI: 10.1039/c5nj00052a] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and efficient method is provided for the production of phosphinito ligands [C6H3-5-OH-1,3-(OPR2)2] and their pincer complexes [NiCl{C6H2-4-OH-2,6-(OPR2)2}].
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Affiliation(s)
| | | | | | | | | | - Rubén A. Toscano
- Instituto de Química
- Universidad Nacional Autónoma de México
- Coyoacán
- Mexico
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Cross WB, Hope EG, Forrest G, Singh K, Solan GA. N-Triisopropylphenyl-substituted N,Npy,O pincers as supports for mononuclear palladium(II) complexes and hydrogen-bonded dimeric assemblies. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Adeyi O, Cross WB, Forrest G, Godfrey L, Hope EG, McLeod A, Singh A, Singh K, Solan GA, Wang Y, Wright LA. From discrete monomeric complexes to hydrogen-bonded dimeric assemblies based on sterically encumbered square planar palladium(ii) ONN-pincers. Dalton Trans 2013; 42:7710-23. [DOI: 10.1039/c3dt50176k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Choi J, MacArthur AHR, Brookhart M, Goldman AS. Dehydrogenation and related reactions catalyzed by iridium pincer complexes. Chem Rev 2011; 111:1761-79. [PMID: 21391566 DOI: 10.1021/cr1003503] [Citation(s) in RCA: 821] [Impact Index Per Article: 63.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jongwook Choi
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, New Brunswick, New Jersey 08903, USA
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Casely IJ, Ziller JW, Mincher BJ, Evans WJ. Bismuth Coordination Chemistry with Allyl, Alkoxide, Aryloxide, and Tetraphenylborate Ligands and the {[2,6-(Me2NCH2)2C6H3]2Bi}+ Cation. Inorg Chem 2010; 50:1513-20. [DOI: 10.1021/ic102119y] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ian J. Casely
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
| | - Bruce J. Mincher
- Aqueous Separations and Radiochemistry Department, Idaho National Laboratory, Idaho Falls, Idaho 83415-6180, United States
| | - William J. Evans
- Department of Chemistry, University of California, Irvine, California 92697-2025, United States
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Supported palladium catalysis using a heteroleptic 2-methylthiomethylpyridine–N,S–donor motif for Mizoroki–Heck and Suzuki–Miyaura coupling, including continuous organic monolith in capillary microscale flow-through mode. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Au RHW, Jennings MC, Puddephatt RJ. Self-Assembly of Chiral Organoplatinum(IV) Complexes with Both Carboxylic Acid and Amide Groups. Organometallics 2009. [DOI: 10.1021/om900611d] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Richard H. W. Au
- Department of Chemistry, University of Western Ontario, London, Canada, N6A 5B7
| | - Michael C. Jennings
- Department of Chemistry, University of Western Ontario, London, Canada, N6A 5B7
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Au RHW, Jennings MC, Puddephatt RJ. Supramolecular Organoplatinum(IV) Chemistry: Sequential Introduction of Amide Hydrogen Bonding Groups. Organometallics 2009. [DOI: 10.1021/om900272w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Richard H. W. Au
- Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Michael C. Jennings
- Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Richard J. Puddephatt
- Department of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
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Blug M, Heuclin H, Cantat T, Le Goff XF, Mézailles N, Le Floch P. A Strained S∼C∼S Ir Pincer Complex: Intramolecular C−H Activation of an Aromatic Ring. Organometallics 2009. [DOI: 10.1021/om801164p] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthias Blug
- Laboratoire “Hétéroéléments et Coordination”, Ecole Polytechnique, CNRS, 91128 Palaiseau cedex, France
| | - Hadrien Heuclin
- Laboratoire “Hétéroéléments et Coordination”, Ecole Polytechnique, CNRS, 91128 Palaiseau cedex, France
| | - Thibault Cantat
- Laboratoire “Hétéroéléments et Coordination”, Ecole Polytechnique, CNRS, 91128 Palaiseau cedex, France
| | - Xavier-Frederic Le Goff
- Laboratoire “Hétéroéléments et Coordination”, Ecole Polytechnique, CNRS, 91128 Palaiseau cedex, France
| | - Nicolas Mézailles
- Laboratoire “Hétéroéléments et Coordination”, Ecole Polytechnique, CNRS, 91128 Palaiseau cedex, France
| | - Pascal Le Floch
- Laboratoire “Hétéroéléments et Coordination”, Ecole Polytechnique, CNRS, 91128 Palaiseau cedex, France
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O'Leary P, van Walree CA, Mehendale NC, Sumerel J, Morse DE, Kaska WC, van Koten G, Klein Gebbink RJM. Enzymatic immobilization of organometallic species: biosilification of NCN- and PCP-pincer metal species using demosponge axial filaments. Dalton Trans 2009:4289-91. [DOI: 10.1039/b900341j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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