Observation of charge bistability in quasi-one-dimensional halogen-bridged palladium complexes by X-ray absorption spectroscopy

Takefumi Yoshida; Shinya Takaishi; Shohei Kumagai; Hiroaki Iguchi; Mohammad Rasel Mian; Masahiro Yamashita

doi:10.1039/c9dt01684h

Observation of charge bistability in quasi-one-dimensional halogen-bridged palladium complexes by X-ray absorption spectroscopy

Takefumi Yoshida, Shinya Takaishi, Shohei Kumagai, Hiroaki Iguchi, Mohammad Rasel Mian, Masahiro Yamashita

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We performed X-ray absorption fine structure (XAFS) measurements on three representative bromo-bridged palladium compounds. In the X-ray absorption near-edge structure (XANES) spectra, the averaged-valence (AV) compound, [Pd³⁺(dabdOH)₂Br]Br₂ (1: dabdOH = (2S,3S)-2,3-diaminobutane-1,4-diol), and the mixed-valence (MV) compound, [Pd²⁺(en)₂][Pd⁴⁺(en)₂Br₂](ReO₄)₄ (2), showed significant differences in their spectra. In [Pd(en)₂Br](Suc-C₅)₂·H₂O (3: en = ethylenediamine, Suc-C₅ = dipentylsulfosuccinate), which exhibits an MV-AV phase transition, on the other hand, the spectroscopic difference between below and above the phase transition temperature was hardly observed due to the subtle difference in the oxidation states. In the extended X-ray absorption fine structure (EXAFS) spectra, a clear difference in the Pd-Br correlation region was observed upon the phase transition.

Original language	English
Pages (from-to)	11628-11631
Number of pages	4
Journal	Dalton Transactions
Volume	48
Issue number	31
DOIs	https://doi.org/10.1039/c9dt01684h
Publication status	Published - 2019

ASJC Scopus subject areas

Inorganic Chemistry

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Observation of charge bistability in quasi-one-dimensional halogen-bridged palladium complexes by X-ray absorption spectroscopy. / Yoshida, Takefumi ; Takaishi, Shinya; Kumagai, Shohei; Iguchi, Hiroaki; Mian, Mohammad Rasel; Yamashita, Masahiro.

In: Dalton Transactions, Vol. 48, No. 31, 2019, p. 11628-11631.

Research output: Contribution to journal › Article › peer-review

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title = "Observation of charge bistability in quasi-one-dimensional halogen-bridged palladium complexes by X-ray absorption spectroscopy",

abstract = "We performed X-ray absorption fine structure (XAFS) measurements on three representative bromo-bridged palladium compounds. In the X-ray absorption near-edge structure (XANES) spectra, the averaged-valence (AV) compound, [Pd3+(dabdOH)2Br]Br2 (1: dabdOH = (2S,3S)-2,3-diaminobutane-1,4-diol), and the mixed-valence (MV) compound, [Pd2+(en)2][Pd4+(en)2Br2](ReO4)4 (2), showed significant differences in their spectra. In [Pd(en)2Br](Suc-C5)2·H2O (3: en = ethylenediamine, Suc-C5 = dipentylsulfosuccinate), which exhibits an MV-AV phase transition, on the other hand, the spectroscopic difference between below and above the phase transition temperature was hardly observed due to the subtle difference in the oxidation states. In the extended X-ray absorption fine structure (EXAFS) spectra, a clear difference in the Pd-Br correlation region was observed upon the phase transition.",

author = "Takefumi Yoshida and Shinya Takaishi and Shohei Kumagai and Hiroaki Iguchi and Mian, {Mohammad Rasel} and Masahiro Yamashita",

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T1 - Observation of charge bistability in quasi-one-dimensional halogen-bridged palladium complexes by X-ray absorption spectroscopy

AU - Yoshida, Takefumi

AU - Takaishi, Shinya

AU - Kumagai, Shohei

AU - Iguchi, Hiroaki

AU - Mian, Mohammad Rasel

AU - Yamashita, Masahiro

PY - 2019

Y1 - 2019

N2 - We performed X-ray absorption fine structure (XAFS) measurements on three representative bromo-bridged palladium compounds. In the X-ray absorption near-edge structure (XANES) spectra, the averaged-valence (AV) compound, [Pd3+(dabdOH)2Br]Br2 (1: dabdOH = (2S,3S)-2,3-diaminobutane-1,4-diol), and the mixed-valence (MV) compound, [Pd2+(en)2][Pd4+(en)2Br2](ReO4)4 (2), showed significant differences in their spectra. In [Pd(en)2Br](Suc-C5)2·H2O (3: en = ethylenediamine, Suc-C5 = dipentylsulfosuccinate), which exhibits an MV-AV phase transition, on the other hand, the spectroscopic difference between below and above the phase transition temperature was hardly observed due to the subtle difference in the oxidation states. In the extended X-ray absorption fine structure (EXAFS) spectra, a clear difference in the Pd-Br correlation region was observed upon the phase transition.

AB - We performed X-ray absorption fine structure (XAFS) measurements on three representative bromo-bridged palladium compounds. In the X-ray absorption near-edge structure (XANES) spectra, the averaged-valence (AV) compound, [Pd3+(dabdOH)2Br]Br2 (1: dabdOH = (2S,3S)-2,3-diaminobutane-1,4-diol), and the mixed-valence (MV) compound, [Pd2+(en)2][Pd4+(en)2Br2](ReO4)4 (2), showed significant differences in their spectra. In [Pd(en)2Br](Suc-C5)2·H2O (3: en = ethylenediamine, Suc-C5 = dipentylsulfosuccinate), which exhibits an MV-AV phase transition, on the other hand, the spectroscopic difference between below and above the phase transition temperature was hardly observed due to the subtle difference in the oxidation states. In the extended X-ray absorption fine structure (EXAFS) spectra, a clear difference in the Pd-Br correlation region was observed upon the phase transition.

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