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[OsF6]x−: Molecular Models for Spin‐Orbit Entangled Phenomena

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/persons/resource/persons216833

Singh,  Saurabh Kumar
Research Department Neese, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Atanasov,  Mihail
Research Department Neese, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;
Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences;

/persons/resource/persons216825

Neese,  Frank
Research Department Neese, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Citation

Pedersen, K. S., Woodruff, D. N., Singh, S. K., Tressaud, A., Durand, E., Atanasov, M., et al. (2017). [OsF6]x−: Molecular Models for Spin‐Orbit Entangled Phenomena. Chemistry – A European Journal, 23(47), 11244-11248. doi:10.1002/chem.201702894.


Cite as: http://hdl.handle.net/21.11116/0000-0007-7144-D
Abstract
Heavy 5d elements, like osmium, feature strong spin‐orbit interactions which are at the origin of exotic physical behaviors. Revealing the full potential of, for example, novel osmium oxide materials (“osmates”) is however contingent upon a detailed understanding of the local single‐ion properties. Herein, two molecular osmate analogues, [OsF6]2− and [OsF6], are reported as model systems for Os4+ and Os5+ centers found in oxides. Using X‐ray absorption spectroscopy (XAS) and X‐ray magnetic circular dichroism (XMCD) techniques, combined with state‐of‐the‐art ab initio calculations, their ground state was elucidated; mirroring the osmium electronic structure in osmates. The realization of such molecular model systems provides a unique chemical playground to engineer materials exhibiting spin‐orbit entangled phenomena.