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Casas J, Baudron SA, Bonnefont A, Chaumont A, Chauvin J, Mobian P, Ruhlmann L. Synthesis, Characterization, and Properties of a Titanium(IV)-Tetrathiafulvalene-Based Complex. Inorg Chem 2024; 63:10057-10067. [PMID: 38728673 DOI: 10.1021/acs.inorgchem.4c01389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
To deeply investigate the interaction between a tetrathiafulvalene (TTF) unit and a Ti(IV) center, a monomeric heteroleptic octahedral Ti(IV) complex containing a diimine ligand composed of a 1,10-phenanthroline core fused with a TTF fragment (ligand 2a) was prepared. The stable complex formulated as Ti(1)2(2a), where 1 is a 2,2'-biphenolato derivative, was efficiently synthesized by following a one-step approach. This complex and its model species [Ti(1)2(2b)] were fully characterized in solution, and their solid-state structures were established by single-crystal X-ray diffraction analysis. Density functional theory calculations allowed the assignment of the frontier orbitals involved in the electronic transitions characterized by ultraviolet-visible absorption spectroscopy. Electrochemical and spectroelectrochemical studies revealed that the TTF unit within Ti(1)2(2a) can undergo two reversible one-electron oxidation processes; a reversible one-electron reduction of the Ti(IV) atom was highlighted. The photophysical measurements performed for this donor-acceptor molecular system indicated that an electron transfer process upon light excitation occurred within Ti(1)2(2a).
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Affiliation(s)
- Jaison Casas
- Université de Strasbourg, CNRS, CMC UMR 7140, F-67000 Strasbourg, France
| | - Stéphane A Baudron
- Université de Strasbourg, CNRS, CMC UMR 7140, F-67000 Strasbourg, France
| | - Antoine Bonnefont
- Université de Strasbourg, CNRS, IC UMR 7177, F-67000 Strasbourg, France
- LEPMI, Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, Grenoble INP, F-38000 Grenoble, France
| | - Alain Chaumont
- Université de Strasbourg, CNRS, CMC UMR 7140, F-67000 Strasbourg, France
| | - Jérôme Chauvin
- Université Grenoble Alpes, CNRS, DCM UMR 5250, 38058 Grenoble, France
| | - Pierre Mobian
- Université de Strasbourg, CNRS, CMC UMR 7140, F-67000 Strasbourg, France
| | - Laurent Ruhlmann
- Université de Strasbourg, CNRS, IC UMR 7177, F-67000 Strasbourg, France
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Basu P, Colston KJ, Mogesa B. Dithione, the antipodal redox partner of ene-1,2-dithiol ligands and their metal complexes. Coord Chem Rev 2020; 409:213211. [PMID: 38094102 PMCID: PMC10718511 DOI: 10.1016/j.ccr.2020.213211] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Defining the oxidation state of the central atom in a coordination compound is fundamental in understanding the electronic structure and provides a starting point for elucidating molecular properties. The presence of non-innocent ligand(s) can obscure the oxidation state of the central atom as the ligand contribution to the electronic structure is difficult to ascertain. Redox-active ligands, such as dithiolene ligands, are well known non-innocent ligands that can exist in both a fully reduced (Dt2-) and fully oxidized (Dt0) states. Complexes containing the fully oxidized dithione state of the ligand are uncommon and only a few have been completely characterized. Dithione ligands are of interest due to their electron-deficient nature and ability to act as an electron acceptor for more electron-rich moieties, such as other dithiolene ligands or metal centers. This article focuses the syntheses, structures, and metal coordination, particularly coordination compounds, of dithione ligands. Various examples of mono, bis, and tris dithione complexes are discussed.
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Affiliation(s)
- Partha Basu
- Department of Chemistry and Chemical Biology, IUPUI, Indianapolis, IN 46202, United States
| | - Kyle J. Colston
- Department of Chemistry and Chemical Biology, IUPUI, Indianapolis, IN 46202, United States
| | - Benjamin Mogesa
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, PA 15282, United States
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Lopes G, da Gama V, Belo D, Simão D, Santos IC, Almeida M, Rabaça S. A 4-cyanobenzene-ethylenedithio-TTF electron donor and its (1 : 1) triiodide radical cation salt; isomer effects in C–N⋯H–C interactions. CrystEngComm 2019. [DOI: 10.1039/c8ce01967c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new isomer of the dissymmetric TTF derivative, 4-cyanobenzene-ethylenedithio-tetrathiafulvalene (4-CNB-EDT-TTF) (1), was prepared and compared with the previously reported 5-CNB-EDT-TTF.
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Affiliation(s)
- Gonçalo Lopes
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Vasco da Gama
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Dulce Belo
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Dulce Simão
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- P-1049-001 Lisboa
- Portugal
| | - Isabel Cordeiro Santos
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Manuel Almeida
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
| | - Sandra Rabaça
- C2TN, Centro de Ciências e Tecnologias Nucleares
- Instituto Superior Técnico
- Universidade de Lisboa
- 2695-066 Bobadela LRS
- Portugal
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Oliveira S, Belo D, Santos IC, Rabaça S, Almeida M. Synthesis and characterization of the cyanobenzene-ethylenedithio-TTF donor. Beilstein J Org Chem 2015; 11:951-6. [PMID: 26124897 PMCID: PMC4464436 DOI: 10.3762/bjoc.11.106] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 05/11/2015] [Indexed: 11/23/2022] Open
Abstract
A dissymmetric TTF-type electron donor, cyanobenzene-ethylenedithio-tetrathiafulvalene (CNB-EDT-TTF), was obtained in high yield, by a cross-coupling reaction with triethyl phosphite between 2-thioxobenzo[d][1,3]dithiole-5-carbonitrile and 5,6-dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-one. This new donor was characterized namely by single crystal X-ray diffraction, cyclic voltammetry, NMR, UV-visible and IR spectroscopy.
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Affiliation(s)
- Sandrina Oliveira
- C²TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, P-2695-066 Bobadela LRS, Portugal
| | - Dulce Belo
- C²TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, P-2695-066 Bobadela LRS, Portugal
| | - Isabel Cordeiro Santos
- C²TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, P-2695-066 Bobadela LRS, Portugal
| | - Sandra Rabaça
- C²TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, P-2695-066 Bobadela LRS, Portugal
| | - Manuel Almeida
- C²TN, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, P-2695-066 Bobadela LRS, Portugal
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Belhadj E, El‐Ghayoury A, Cauchy T, Allain M, Mazari M, Sallé M. Tetrathiafulvalene‐Based Phenanthroline Ligands: Synthesis, Crystal Structures, and Electronic Properties. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402073] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Esmah Belhadj
- Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH‐Anjou, 2 bd Lavoisier, 49045 Angers Cedex, France http://moltech‐anjou.univ‐angers.fr/
- Laboratoire de Synthèse Organique Appliquée d'Oran, Université d'Oran Es‐Sénia, Algérie
| | - Abdelkrim El‐Ghayoury
- Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH‐Anjou, 2 bd Lavoisier, 49045 Angers Cedex, France http://moltech‐anjou.univ‐angers.fr/
| | - Thomas Cauchy
- Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH‐Anjou, 2 bd Lavoisier, 49045 Angers Cedex, France http://moltech‐anjou.univ‐angers.fr/
| | - Magali Allain
- Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH‐Anjou, 2 bd Lavoisier, 49045 Angers Cedex, France http://moltech‐anjou.univ‐angers.fr/
| | - Miloud Mazari
- Laboratoire de Synthèse Organique Appliquée d'Oran, Université d'Oran Es‐Sénia, Algérie
| | - Marc Sallé
- Université d'Angers, CNRS UMR 6200, Laboratoire MOLTECH‐Anjou, 2 bd Lavoisier, 49045 Angers Cedex, France http://moltech‐anjou.univ‐angers.fr/
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