Synchrotron-based Nickel Mössbauer Spectroscopy.
Document Type
Article
Publication Date
7-18-2016
Abstract
We used a novel experimental setup to conduct the first synchrotron-based (61)Ni 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. (61)NiCr2O4 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 (61)Ni Mössbauer approach with a radioactive source. A linear Ni amido complex, (61)Ni{N(SiMe3)Dipp}2, where Dipp = C6H3-2,6-(i)Pr2, was chosen as a sample with an "extreme" geometry and large quadrupole splitting. Finally, to demonstrate the feasibility of metalloprotein studies using synchrotron-based (61)Ni Mössbauer spectroscopy, we examined the spectra of (61)Ni-substituted rubredoxin in reduced and oxidized forms, along with [Et4N]2[(61)Ni(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 (61)Ni Mössbauer spectroscopy appears to be a promising alternative to measurements with radioactive sources.
Publication Title
Inorganic chemistry
Volume
55
Issue
14
First Page
6866
Last Page
6872
PubMed ID
27387959
Recommended Citation
Gee, Leland B; Lin, Chun-Yi; Jenney, Francis E.; Adams, Michael W W; Yoda, Yoshitaka; Masuda, Ryo; Saito, Makina; Kobayashi, Yasuhiro; Tamasaku, Kenji; Lerche, Michael; Seto, Makoto; Riordan, Charles G; Ploskonka, Ann; Power, Philip P; Cramer, Stephen P; and Lauterbach, Lars, "Synchrotron-based Nickel Mössbauer Spectroscopy." (2016). PCOM Scholarly Works. 1745.
https://digitalcommons.pcom.edu/scholarly_papers/1745