Mixed‐Metal Monophosphate Tungsten Bronzes Containing Rhodium and Iridium
| العنوان: | Mixed‐Metal Monophosphate Tungsten Bronzes Containing Rhodium and Iridium |
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| المؤلفون: | Alexander Karbstein, Werner Mader, Robert Glaum, Markus Weber, Jörg Daniels, Dominic Lahr, Stephan Andreas Schunk, Wilfried Assenmacher, Frank Rosowski |
| المصدر: | European Journal of Inorganic Chemistry. 2021:1459-1469 |
| بيانات النشر: | Wiley, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Inorganic Chemistry, Solid-state chemistry, chemistry, Mixed metal, ddc:540, Inorganic chemistry, chemistry.chemical_element, Iridium, Tungsten, Solid state structure, Rhodium |
| الوصف: | Solution combustion synthesis followed by annealing in air led to the MPTB‐related phosphates (Rh1/6W5/6O3)8(PO2)4, (Ir1/6W5/6O3)8(PO2)4 (a=5.258(2) Å, b=6.538(3) Å, c=17.322(8) Å), (Rh1/9W8/9O3)12(PO2)4 and (Rh2/21W19/21O3)14(PO2)4. Single‐crystals of the mixed‐metal (Rh,W)‐MPTBs at m=4 and at m=7 were grown by chemical vapor transport (CVT). Their crystal structures have been refined from X‐ray single‐crystal data {(Rh,W)‐MPTB at m=4: P212121, Z=1, a=5.2232(3) Å, b=6.4966(3) Å, c=17.3819(9) Å, R1=0.032, wR2=0.075 for 1714 unique reflections, 1524 with Fo>4σ(Fo), 66 variables, 1 constraint, composition from refinement (Rh0.15W0.85O3)8(PO2)4; (Rh,W)‐MPTB at m=7: P21/n, Z=1, a=5.2510(4) Å, b=6.4949(5) Å, c=26.685(2) Å, β=90.30(1)°, R1=0.060, wR2=0.163 for 2074 unique reflections, 1894 with Fo>4σ(Fo), 100 variables, comp. from ref. (Rh0.07W0.93O3)14(PO2)4}. These structure refinements show unexpected distribution of Rh and W over the available metal sites. Further characterization (powder reflectance and magnetic measurements) of the (Rh,W)‐MPTB at m=4 and at m=7 suggest for both phases a homogeneity range with respect to the Rh/W ratio and the presence of small amounts of W5+ besides Rh3+ and W6+. Results of the ligand field analysis for the reference material Rh(PO3)3, which is containing the octahedral chromophore [RhIIIO6], are reported (Δo=23200 cm−1, B=490 cm−1). |
| وصف الملف: | application/pdf |
| تدمد: | 1099-0682 1434-1948 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c75963f3df9499f06495aacbeb12a2a6 https://doi.org/10.1002/ejic.202100047 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....c75963f3df9499f06495aacbeb12a2a6 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10990682 14341948 |
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