Abstract
A new route to iron carbonyls has enabled synthesis of (57)Fe-labeled [NiFe] hydrogenase mimic (OC)3(57)Fe(pdt)Ni(dppe). Its study by nuclear resonance vibrational spectroscopy revealed Ni-(57)Fe vibrations, as confirmed by calculations. The modes are absent for [(OC)3(57)Fe(pdt)Ni(dppe)](+), which lacks Ni-(57)Fe bonding, underscoring the utility of the analyses in identifying metal-metal interactions.
Highlights
David Schilter,*a Vladimir Pelmenschikov,b Hongxin Wang,cd Florian Meier,b Leland B
Specificity for 57Fe-coupled modes is afforded by nuclear resonance vibrational spectroscopy (NRVS, vide infra)
Intense bands assigned to nFe–CO and dFe–CO modes were observed at 440–630 cmÀ1, with full-range NRVS spectra and Fe–C(O) kinetic energy distribution (KED) diagrams presented in Fig. S9 (ESI†)
Summary
David Schilter,*a Vladimir Pelmenschikov,b Hongxin Wang,cd Florian Meier,b Leland B. 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.
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