| Autor: |
Takefumi Yoshida, Brian K. Breedlove, Mohammad Rasel Mian, Shinya Takaishi, Hiroshi Okamoto, Masahiro Yamashita, Shin-ichi Kuroda, Unjila Afrin, Masanori Wakizaka, Hisaaki Tanaka, Tatsuya Miyamoto, Hiroaki Iguchi |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Dalton transactions (Cambridge, England : 2003). 50(5) |
| ISSN: |
1477-9234 |
| Popis: |
The Pd(iii) oxidation state is unusual and unstable since it strongly tends to disproportionate. We synthesized the quasi-one-dimensional (1D) halogen-bridged Pd(iii)-Cl complex [Pd(dabdOH)2Cl]Cl2 (1-Cl; dabdOH = (2S,3S)-2,3-diaminobutane-1,4-diol) with multiple hydrogen bonds. From single-crystal X-ray diffraction, the bridging Cl- ions were located at the midpoint of the Pd-Cl-Pd moieties in the 1D chains, indicating that the Pd ions are in a Pd(iii) average valence (AV) state. Moreover, bright spots for the Pd(iii) dz2 orbitals in the upper Hubbard band above the Fermi level were observed every ∼5 A using scanning tunnelling microscopy. These results clearly indicate that the Pd ions are in a Pd(iii) AV state in 1-Cl. In addition, 1-Cl has the highest thermal stability (470 K) among the Pd(iii) complexes reported and the highest electrical conductivity (0.6 S cm-1 at 300 K) among the 1D Pd-Cl chains reported so far. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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