Multiple-Hydrogen-Bond Approach to Uncommon Pd(III) Oxidation State: A Pd-Br Chain with High Conductivity and Thermal Stability
| Autor: | Brian K. Breedlove, Shin-ichi Kuroda, Hideaki Murasugi, Hisaaki Tanaka, Tatsuya Miyamoto, Mohammad Rasel Mian, Hiroaki Iguchi, Shinya Takaishi, Hiroshi Okamoto, Masahiro Yamashita |
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| Rok vydání: | 2017 |
| Předmět: |
Hydrogen
010405 organic chemistry Hydrogen bond Ligand Thermal decomposition chemistry.chemical_element General Chemistry Conductivity 010402 general chemistry 01 natural sciences Biochemistry Catalysis 0104 chemical sciences Colloid and Surface Chemistry chemistry Electrical resistivity and conductivity Oxidation state Organic chemistry Physical chemistry Thermal stability |
| Zdroj: | Journal of the American Chemical Society. 139(19) |
| ISSN: | 1520-5126 |
| Popis: | A Br-bridged Pd chain complex with the Pd ion in an uncommon +3 oxidation state, [Pd(dabdOH)2Br]Br2 (3), was prepared using a new method involving multiple hydrogen bonds. The PdBr chain complex exhibited superior electrical conductivity and thermal stability. An in-plane ligand with an additional hydrogen donor group (hydroxy group), (2S,3S)-2,3-diaminobutane-1,4-diol (dabdOH), was used to create a multiple-hydrogen-bond network, which effectively shrinks the Pd–Br–Pd distance, stabilizing the Pd(III) state up to its decomposition temperature (443 K). 3 shows semiconducting behavior with quite high electrical conductivity (3–38 S cm–1 at room temperature), which is 106 times larger than the previous record for analogous PdBr chains. Indeed, 3 is the most conductive MX-type chain complex reported so far. The precise positional control of ions via a multiple-hydrogen-bond network is a useful method for controlling the electronic states, thermal stability and conductivity of linear coordination polymers. |
| Databáze: | OpenAIRE |
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