X‐ray Absorption Spectroscopy for the Characterization of Photoinduced Linkage Isomers in Single Crystals: Experimental Setup and XANES Results** - CRM2 - Laboratoire de Cristallographie, Résonance Magnétique et Modélisations Accéder directement au contenu
Article Dans Une Revue ChemPhotoChem Année : 2022

X‐ray Absorption Spectroscopy for the Characterization of Photoinduced Linkage Isomers in Single Crystals: Experimental Setup and XANES Results**

Résumé

Photoinduced linkage isomers (PLI) of the nitrosyl ligand in single crystals of Na2[Fe(CN)5NO]•2H2O (SNP, sodium nitroprusside) have been studied by X-ray absorption spectroscopy (XAS) at low temperatures, using a cryostat allowing in-situ polarized LASER irradiation and XAS measurements. In the XANES (X-ray Absorption Near Edge Structure) region a significant modification of the pre-edge peak intensities is observed after irradiation of the ground state (GS) nitrosyl NO-κN isomer with light in the blue and infrared spectral range, used for the generation of the isonitrosyl NO-κO isomer (MS1) and the side-on bound κ 2 N,O isomer (MS2), respectively. These observations are interpreted with respect to the changes in the nature of the frontier (unoccupied) molecular orbitals of the different linkage isomer configurations, expected from earlier calculations.
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Dates et versions

hal-03905865 , version 1 (19-12-2022)

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Duclair Tchana Kamgne, Bridinette Thiodjio Sendja, Danilo Oliveira de Souza, Theo Woike, Giuliana Aquilanti, et al.. X‐ray Absorption Spectroscopy for the Characterization of Photoinduced Linkage Isomers in Single Crystals: Experimental Setup and XANES Results**. ChemPhotoChem, 2022, 6 (12), ⟨10.1002/cptc.202200221⟩. ⟨hal-03905865⟩
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