Optical and Electrochemical Properties of a Photosensitive Pyromellitic Diimide Derivative of Cymantrene
Photochemical properties of symmetrical pyromellitic diimide containing two cymantrenyl fragments at two nitrogen atoms were studied with IR, NMR, UV-vis, ESI-MS, and cyclic voltammetry. It was found that new unstable chelates are formed during photolysis. At the same time, the CO ligand dissociates...
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MDPI AG
2023-10-01
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| author | Elena S. Kelbysheva Mariam G. Ezernitskaya Rinat R. Aysin Tatyana V. Strelkova Alexey N. Rodionov Lyudmila N. Telegina |
| author_facet | Elena S. Kelbysheva Mariam G. Ezernitskaya Rinat R. Aysin Tatyana V. Strelkova Alexey N. Rodionov Lyudmila N. Telegina |
| author_sort | Elena S. Kelbysheva |
| collection | DOAJ |
| description | Photochemical properties of symmetrical pyromellitic diimide containing two cymantrenyl fragments at two nitrogen atoms were studied with IR, NMR, UV-vis, ESI-MS, and cyclic voltammetry. It was found that new unstable chelates are formed during photolysis. At the same time, the CO ligand dissociates from two Mn(CO)<sub>3</sub> fragments during photoexcitation, which dramatically changes the electronic and redox properties of the molecule compared to the cymantrene derivative containing one imide fragment. Photolysis leads to a color change from light yellow to green. DFT calculations confirmed the possibility of the formation of complexes due to the loss of one or two CO ligands from manganese atoms. The results obtained with variation of photolysis conditions demonstrated the hemilabile character of the Mn-O=C(imide) bond. On addition of external ligands, the color and electrochemical properties changed, which is promising for the use of this complex as a sensor for small molecules. |
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| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T21:00:56Z |
| publishDate | 2023-10-01 |
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| series | Molecules |
| spelling | doaj.art-af888713a9d34c06bd62b3ca02adf0232023-11-19T17:32:42ZengMDPI AGMolecules1420-30492023-10-012820709810.3390/molecules28207098Optical and Electrochemical Properties of a Photosensitive Pyromellitic Diimide Derivative of CymantreneElena S. Kelbysheva0Mariam G. Ezernitskaya1Rinat R. Aysin2Tatyana V. Strelkova3Alexey N. Rodionov4Lyudmila N. Telegina5A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova 28, Moscow 119991, RussiaA.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova 28, Moscow 119991, RussiaA.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova 28, Moscow 119991, RussiaA.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova 28, Moscow 119991, RussiaA.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova 28, Moscow 119991, RussiaA.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova 28, Moscow 119991, RussiaPhotochemical properties of symmetrical pyromellitic diimide containing two cymantrenyl fragments at two nitrogen atoms were studied with IR, NMR, UV-vis, ESI-MS, and cyclic voltammetry. It was found that new unstable chelates are formed during photolysis. At the same time, the CO ligand dissociates from two Mn(CO)<sub>3</sub> fragments during photoexcitation, which dramatically changes the electronic and redox properties of the molecule compared to the cymantrene derivative containing one imide fragment. Photolysis leads to a color change from light yellow to green. DFT calculations confirmed the possibility of the formation of complexes due to the loss of one or two CO ligands from manganese atoms. The results obtained with variation of photolysis conditions demonstrated the hemilabile character of the Mn-O=C(imide) bond. On addition of external ligands, the color and electrochemical properties changed, which is promising for the use of this complex as a sensor for small molecules.https://www.mdpi.com/1420-3049/28/20/7098cymantrenepyromellitic diimidephotochemistryoptical propertieselectrochemistry |
| spellingShingle | Elena S. Kelbysheva Mariam G. Ezernitskaya Rinat R. Aysin Tatyana V. Strelkova Alexey N. Rodionov Lyudmila N. Telegina Optical and Electrochemical Properties of a Photosensitive Pyromellitic Diimide Derivative of Cymantrene Molecules cymantrene pyromellitic diimide photochemistry optical properties electrochemistry |
| title | Optical and Electrochemical Properties of a Photosensitive Pyromellitic Diimide Derivative of Cymantrene |
| title_full | Optical and Electrochemical Properties of a Photosensitive Pyromellitic Diimide Derivative of Cymantrene |
| title_fullStr | Optical and Electrochemical Properties of a Photosensitive Pyromellitic Diimide Derivative of Cymantrene |
| title_full_unstemmed | Optical and Electrochemical Properties of a Photosensitive Pyromellitic Diimide Derivative of Cymantrene |
| title_short | Optical and Electrochemical Properties of a Photosensitive Pyromellitic Diimide Derivative of Cymantrene |
| title_sort | optical and electrochemical properties of a photosensitive pyromellitic diimide derivative of cymantrene |
| topic | cymantrene pyromellitic diimide photochemistry optical properties electrochemistry |
| url | https://www.mdpi.com/1420-3049/28/20/7098 |
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