Premium
LaSr 3 NiRuO 4 H 4 : A 4d Transition‐Metal Oxide–Hydride Containing Metal Hydride Sheets
Author(s) -
Jin Lun,
Lane Michael,
Zeng Dihao,
Kirschner Franziska K. K.,
Lang Franz,
Manuel Pascal,
Blundell Stephen J.,
McGrady John E.,
Hayward Michael A.
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201800989
Subject(s) - hydride , neutron diffraction , crystallography , chemistry , oxide , inorganic chemistry , transition metal , metal , cuprate , crystal structure , superconductivity , condensed matter physics , physics , catalysis , organic chemistry
The synthesis of the first 4d transition metal oxide–hydride, LaSr 3 NiRuO 4 H 4 , 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 CuO 2 sheets present in the superconducting cuprates. DFT calculations confirm the presence of S= 1 / 2 Ni + and S=0, Ru 2+ 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 3dz2and H 1s in the super‐exchange pathways.