Xu, Z;
Palgrave, RG;
Hayward, MA;
(2020)
LaSrCo_{0.5}Rh_{0.5}O_{3.25} and LaSrNi_{0.5}Rh_{0.5}O_{3.25}:Topochemically Reduced, Mixed Valence Rh(I)/Rh(III) Oxides.
Inorganic Chemistry
, 59
(18)
pp. 13767-13773.
10.1021/acs.inorgchem.0c02131.
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Abstract
Topochemical reduction of the n = 1 Ruddlesden–Popper phases LaSrCo_{0.5}Rh_{0.5}O_{4} and LaSrNi_{0.5}Rh_{0.5}O_{4} with Zr yields LaSrCo_{0.5}Rh_{0.5}O_{3.25} and LaSrNi_{0.5}Rh_{0.5}O_{3.25}, respectively. Magnetization and XPS data reveal that while the rhodium centers in LaSrCo_{0.5}Rh_{0.5}O_{3.25} and LaSrNi_{0.5}Rh_{0.5}O_{3.25} have an average oxidation state of Rh^{2+}, these are actually mixed valence Rh(I,III) compounds, with the disproportionation of Rh^{2+} driven by the favorability of locating d^{8} Rh^{1+} and d^{6} Rh^{3+} cations within square-planar and square-based pyramidal coordination sites, respectively.
| Type: | Article |
|---|---|
| Title: | LaSrCo_{0.5}Rh_{0.5}O_{3.25} and LaSrNi_{0.5}Rh_{0.5}O_{3.25}:Topochemically Reduced, Mixed Valence Rh(I)/Rh(III) Oxides |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acs.inorgchem.0c02131 |
| Publisher version: | https://doi.org/10.1021/acs.inorgchem.0c02131 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Palladium, Oxides, Oxidation state, Transition metals, Cations |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10110568 |
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