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Shafizadeh N, Crestoni ME, de la Lande A, Soep B. Heme ligation in the gas phase. INT REV PHYS CHEM 2021. [DOI: 10.1080/0144235x.2021.1952006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - Maria Elisa Crestoni
- Dipartimento di Chimica e Tecnologie del Farmaco, Università di Roma “La Sapienza”, Roma, Italy
| | | | - Benoît Soep
- ISMO-CNRS, Université Paris Saclay, Orsay Cedex, France
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Kruppa SV, Groß C, Gui X, Bäppler F, Kwasigroch B, Sun Y, Diller R, Klopper W, Niedner-Schatteburg G, Riehn C, Thiel WR. Photoinitiated Charge Transfer in a Triangular Silver(I) Hydride Complex and Its Oxophilicity. Chemistry 2019; 25:11269-11284. [PMID: 31188502 DOI: 10.1002/chem.201901981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/08/2019] [Indexed: 12/28/2022]
Abstract
The photoexcitation of a triangular silver(I) hydride complex, [Ag3 (μ3 -H)(μ2 -dcpm)3 ](PF6 )2 ([P](PF6 )2 , dcpm=bis(dicyclohexylphosphino)methane), designed with "UV-silent" bis-phosphine ligands, provokes hydride-to-Ag3 single and double electron transfer. The nature of the electronic transitions has been authenticated by absorption and photodissociation spectroscopy in parallel with high-level quantum-chemical computations utilizing the GW method and Bethe-Salpeter equation (GW-BSE). Specific photofragments of mass-selected [P]2+ ions testify to charge transfer and competing pathways resulting from the unique [Ag3 (μ3 -H)]2+ scaffold. This structural motif of [P](PF6 )2 has been unequivocally verified by 1 H NMR spectroscopy in concert with DFT and X-ray diffraction structural analysis, which revealed short equilateral Ag-Ag distances (dAgAg =3.08 Å) within the range of argentophilic interactions. The reduced radical cation [P]. + exhibits strong oxophilicity, forming [P+O2 ].+ ,which is a model intermediate for silver oxidation catalysis.
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Affiliation(s)
- Sebastian V Kruppa
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| | - Cedric Groß
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| | - Xin Gui
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131, Karlsruhe, Germany
| | - Florian Bäppler
- Department of Physics, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 46, 67663, Kaiserslautern, Germany
| | - Björn Kwasigroch
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| | - Yu Sun
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
| | - Rolf Diller
- Department of Physics, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 46, 67663, Kaiserslautern, Germany
| | - Wim Klopper
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131, Karlsruhe, Germany
| | - Gereon Niedner-Schatteburg
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany.,Research Center OPTIMAS, Erwin-Schrödinger Str. 46, 67663, Kaiserslautern, Germany
| | - Christoph Riehn
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany.,Research Center OPTIMAS, Erwin-Schrödinger Str. 46, 67663, Kaiserslautern, Germany
| | - Werner R Thiel
- Department of Chemistry, Technische Universität Kaiserslautern (TUK), Erwin-Schrödinger. Str. 52, 67663, Kaiserslautern, Germany
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Kerkeni B, Aquino AJA, Berman MR, Hase WL. Structures and binding energies for complexations of different spin states of Ni + and Ni 2+ to aromatic molecules. Mol Phys 2019. [DOI: 10.1080/00268976.2018.1552800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Boutheïna Kerkeni
- Département de Physique, Laboratoire de Physique de la Matière Condensée (LPMC), Faculté des Sciences de Tunis, Université de Tunis El Manar, Tunis, Tunisia
- Institut Supérieur des Arts Multimédia de la, Université de la Manouba, Manouba, Tunisia
- Sorbonne Université, Observatoire de Paris, Université PSL, CNRS, LERMA, Meudon, France
| | - Adelia J. A. Aquino
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, People’s Republic of China
| | | | - William L. Hase
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA
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Aarabi M, Omidyan R, Soorkia S, Grégoire G, Broquier M, Crestoni ME, de la Lande A, Soep B, Shafizadeh N. The dramatic effect of N-methylimidazole on trans axial ligand binding to ferric heme: experiment and theory. Phys Chem Chem Phys 2019; 21:1750-1760. [PMID: 30623949 DOI: 10.1039/c8cp06210b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The binding energy of CO, O2 and NO to isolated ferric heme, [FeIIIP]+, was studied in the presence and absence of a σ donor (N-methylimidazole and histidine) as the trans axial ligand. This study combines the experimental determination of binding enthalpies by equilibrium measurements in a low temperature ion trap using the van't Hoff equation and high level DFT calculations. It was found that the presence of N-methylimidazole as the axial ligand on the [FeIIIP]+ porphyrin dramatically weakens the [FeIIIP-ligand]+ bond with an up to sevenfold decrease in binding energy owing to the σ donation by N-methylimidazole to the FeIII(3d) orbitals. This trans σ donor effect is characteristic of ligation to iron in hemes in both ferrous and ferric redox forms; however, to date, this has not been observed for ferric heme.
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Affiliation(s)
- Mohammad Aarabi
- Department of Chemistry, University of Isfahan, 81746-73441 Isfahan, Iran.
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Phung QM, Pierloot K. The dioxygen adducts of iron and manganese porphyrins: electronic structure and binding energy. Phys Chem Chem Phys 2018; 20:17009-17019. [DOI: 10.1039/c8cp03078b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The electronic structures of adducts of O2 and metal porphyrins were thoroughly investigated by highly accurate DMRG-CASPT2.
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