Synchrotron-based Nickel Mössbauer Spectroscopy

Leland B. Gee, Chun Yi Lin, Francis E. Jenney, Michael W.W. Adams, Yoshitaka Yoda, Ryo Masuda, Makina Saito, Yasuhiro Kobayashi, Kenji Tamasaku, Michael Lerche, Makoto Seto, Charles G. Riordan, Ann Ploskonka, Philip P. Power, Stephen P. Cramer, Lars Lauterbach

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13 引文 斯高帕斯(Scopus)


We used a novel experimental setup to conduct the first synchrotron-based 61Ni Mössbauer spectroscopy measurements in the energy domain on Ni coordination complexes and metalloproteins. A representative set of samples was chosen to demonstrate the potential of this approach. 61NiCr2O4 was examined as a case with strong Zeeman splittings. Simulations of the spectra yielded an internal magnetic field of 44.6 T, consistent with previous work by the traditional 61Ni Mössbauer approach with a radioactive source. A linear Ni amido complex, 61Ni{N(SiMe3)Dipp}2, where Dipp = C6H3-2,6-iPr2, was chosen as a sample with an "extreme" geometry and large quadrupole splitting. Finally, to demonstrate the feasibility of metalloprotein studies using synchrotron-based 61Ni Mössbauer spectroscopy, we examined the spectra of 61Ni-substituted rubredoxin in reduced and oxidized forms, along with [Et4N]2[61Ni(SPh)4] as a model compound. For each of the above samples, a reasonable spectrum could be obtained in ∼1 d. Given that there is still room for considerable improvement in experimental sensitivity, synchrotron-based 61Ni Mössbauer spectroscopy appears to be a promising alternative to measurements with radioactive sources.

頁(從 - 到)6866-6872
期刊Inorganic Chemistry
出版狀態Published - 2016 7月 18

All Science Journal Classification (ASJC) codes

  • 物理與理論化學
  • 無機化學


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