Covalent Stabilization of the Iridium-Containing Oxyhydrides Sr<sub>2</sub>Mn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>3.25</sub>H<sub>0.75</sub> and Sr<sub>2</sub>Mn<sub>0.5</sub>Ir<sub>0.5</sub>O<sub>2.66</sub>H<sub>1.33</sub>.
Ontology highlight
ABSTRACT: Reaction between Sr2Mn0.5Ir0.5O4 and CaH2 or LiH yields the iridium-containing oxyhydride phases Sr2Mn0.5Ir0.5O3.25H0.75 or Sr2Mn0.5Ir0.5O2.66H1.33, respectively. Analysis of Mn K-edge XANES data indicate the presence of Ir3+ centers in these oxyhydride phases, whose low-spin d6 configuration is consistent with the "covalent stabilization" of the metastable oxyhydride phases, as seen previously in analogous ruthenium and rhodium containing materials. Neutron powder diffraction data indicate the hydride ions are located exclusively within the "equatorial" anion sites of Sr2Mn0.5Ir
SUBMITTER: Murrell JI
PROVIDER: S-EPMC11577310 | biostudies-literature | 2024 Nov
REPOSITORIES: biostudies-literature
ACCESS DATA
