title: Synchrotron-based Nickel Mössbauer Spectroscopy.
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.
authors.affiliation: Department of Chemistry, University of California , Davis, California 95616, United States.
authors.forename: Leland B
authors.initials: LB
authors.lastname: Gee
authors.affiliation: Department of Chemistry, University of California , Davis, California 95616, United States.
authors.forename: Chun-Yi
authors.initials: CY
authors.lastname: Lin
authors.affiliation: Georgia Campus, Philadelphia College of Osteopathic Medicine , Suwanee, Georgia 30024, United States.
authors.forename: Francis E
authors.initials: FE
authors.lastname: Jenney
authors.affiliation: Georgia Campus, Philadelphia College of Osteopathic Medicine , Suwanee, Georgia 30024, United States.
authors.forename: Michael W W
authors.initials: MW
authors.lastname: Adams
authors.affiliation: Japan Synchrotron Radiation Research Institute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-gun, Hyogo 679-5198, Japan.
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Yoda
authors.affiliation: Research Reactor Institute, Kyoto University , Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan.
authors.forename: Ryo
authors.initials: R
authors.lastname: Masuda
authors.affiliation: Research Reactor Institute, Kyoto University , Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan.
authors.forename: Makina
authors.initials: M
authors.lastname: Saito
authors.affiliation: Research Reactor Institute, Kyoto University , Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan.
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Kobayashi
authors.affiliation: SR Material Science Inst. Unit, RIKEN SPring-8 Center , 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Tamasaku
authors.affiliation: Department of Chemistry, University of California , Davis, California 95616, United States.
authors.forename: Michael
authors.initials: M
authors.lastname: Lerche
authors.affiliation: Research Reactor Institute, Kyoto University , Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan.|Japan Atomic Energy Agency , Mikazuki-cho, Sayo-gun, Hyogo 679-5148, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Seto
authors.affiliation: Department of Chemistry & Biochemistry, University of Delaware , Newark, Delaware 19716, United States.
authors.forename: Charles G
authors.initials: CG
authors.lastname: Riordan
authors.affiliation: Department of Chemistry & Biochemistry, University of Delaware , Newark, Delaware 19716, United States.
authors.forename: Ann
authors.initials: A
authors.lastname: Ploskonka
authors.affiliation: Department of Chemistry, University of California , Davis, California 95616, United States.
authors.forename: Philip P
authors.initials: PP
authors.lastname: Power
authors.affiliation: Department of Chemistry, University of California , Davis, California 95616, United States.|Physical Biosciences Division, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Cramer
authors.affiliation: Department of Chemistry, University of California , Davis, California 95616, United States.|Department of Chemistry, Technische Universtät Berlin , Strasse des 17. Juni 135, 10623 Berlin, Germany.
authors.forename: Lars
authors.initials: L
authors.lastname: Lauterbach
mesh_terms: D008280:Magnetics; D009532:Nickel / Q000737:chemistry*; D015204:Spectroscopy, Mossbauer / Q000379:methods*; D017356:Synchrotrons
chemical_list: D009532:Nickel