Notizen: The Nuclear Moments of the 67.4 keV Level in <sup>61</sup>Ni

Göring, J.

doi:10.1515/zna-1971-1126

Cited by 15 publications

(1 citation statement)

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“…The fit was fixed to an axial EFG as in previous studies. 44,45 The fit yielded an internal hyperfine magnetic field of 44.6 T, in agreement with the value (44.5 T) from previous Mössbauer studies using radioactive 61 Co in a 62 Ni 0.85 Cr 0.15 source that was activated by bremsstrahlung. 46 V zz was fit to 7.23 V/m 2 , however the fit was largely invariant of the V zz value due to the quality of the data and the small effect of the EFG relative to the large internal magnetic field.…”

Section: Resultssupporting

confidence: 87%

Synchrotron-based Nickel Mössbauer Spectroscopy

et al. 2016

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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.

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Section: Resultssupporting

confidence: 87%