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Synthesis and vibrational spectroscopy of Fe-57-labeled models of [NiFe] hydrogenase: first direct observation of a nickel-iron interaction
Synthesis and vibrational spectroscopy of Fe-57-labeled models of [NiFe] hydrogenase: first direct observation of a nickel-iron interaction
Schilter, David; Pelmenschikov, Vladimir; Wang, Hongxin; Meier, Florian; Gee, Leland B.; Yoda, Yoshitaka; Kaupp, Martin; Rauchfuss, Thomas B.; Cramer, Stephen P.
Inst. Chemie
A new route to iron carbonyls has enabled synthesis of 57Fe-labeled [NiFe] hydrogenase mimic (OC)357Fe(pdt)Ni(dppe) (pdt = 1,3-propanedithiolate). Its study by nuclear resonance vibrational spectroscopy revealed Ni-57Fe vibrations, as confirmed by calcns. The modes are absent for [(OC)357Fe(pdt)Ni(dppe)]+, which lacks Ni-57Fe bonding, underscoring the utility of the analyses in identifying metal-metal interactions.
