LaSr3NiRuO4H4: A 4d Transition‐Metal Oxide–Hydride Containing Metal Hydride Sheets |
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| Authors: | Lun Jin Michael Lane Dihao Zeng Franziska K. K. Kirschner Dr. Franz Lang Dr. Pascal Manuel Prof. Stephen J. Blundell Prof. John E. McGrady Prof. Michael A. Hayward |
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| Affiliation: | 1. Department of Chemistry, Inorganic Chemistry Laboratory, University of Oxford, UK;2. Department of Physics, Clarendon Laboratory, University of Oxford, UK;3. ISIS Facility, Rutherford Appleton Laboratory, Oxon, UK |
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| Abstract: | The synthesis of the first 4d transition metal oxide–hydride, LaSr3NiRuO4H4, is prepared via topochemical anion exchange. Neutron diffraction data show that the hydride ions occupy the equatorial anion sites in the host lattice and as a result the Ru and Ni cations are located in a plane containing only hydride ligands, a unique structural feature with obvious parallels to the CuO2 sheets present in the superconducting cuprates. DFT calculations confirm the presence of S= Ni+ and S=0, Ru2+ centers, but neutron diffraction and μSR data show no evidence for long‐range magnetic order between the Ni centers down to 1.8 K. The observed weak inter‐cation magnetic coupling can be attributed to poor overlap between Ni 3d and H 1s in the super‐exchange pathways. |
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| Keywords: | anion exchange reactions metal hydrides neutron diffraction oxide– hydrides transition metals |
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Ni+ and S=0, Ru2+ centers, but neutron diffraction and μSR data show no evidence for long‐range magnetic order between the Ni centers down to 1.8 K. The observed weak inter‐cation magnetic coupling can be attributed to poor overlap between Ni 3d
and H 1s in the super‐exchange pathways.