دورية
Photon-Modulated Bond Covalency of [Sm(II)(η9-C9H9)2]
| العنوان: | Photon-Modulated Bond Covalency of [Sm(II)(η9-C9H9)2] |
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| المؤلفون: | Vitova, T., Ramanantoanina, H., Schacherl, B., Münzfeld, L., Hauser, A., Ekanayake, R. S. K., Reitz, C. Y., Prüßmann, T., Neill, T. S., Göttlicher, J., Steininger, R., Saveleva, V. A., Haverkort, M. W., Roesky, P. W. |
| المصدر: | Journal of the American Chemical Society; July 2024, Vol. 146 Issue: 30 p20577-20583, 7p |
| مستخلص: | Lanthanides are widely assumed not to form covalent bonds due to the localized nature of their 4f valence electrons. This work demonstrates that the ionic bond of Sm(II) with cyclononatetraenyl (η9-C9H9–) in [Sm(η9-C9H9)2] can be modulated and becomes more covalent by photon-induced transfer of Sm 4f electrons to Sm 5d orbitals. This photon-induced change in bonding properties facilitates a subsequent reconfiguration of [Sm(η9-C9H9)2]. As a result, Sm–C bond length contraction is detected and the local Sm coordination environment exhibits more extensive disorder. Both Sm 4f and 5d electrons have increased participation in covalent Sm–ligand interactions. The Sm L3-edge valence band resonant inelastic X-ray scattering (VB-RIXS), high-resolution X-ray absorption near-edge structure (HR-XANES), and quantum chemical computations showcase a spectroscopic methodology for in-depth studies of bond covalency of lanthanide atoms. |
| قاعدة البيانات: | Supplemental Index |
Find this issue from the American Chemical Society | تدمد: | 00027863 15205126 |
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| DOI: | 10.1021/jacs.3c13934 |