Journal
ISRAEL JOURNAL OF CHEMISTRY
Volume 57, Issue 12, Pages 1106-1116Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ijch.201700036
Keywords
Iron; cross-coupling; Mossbauer spectroscopy; magnetic circular dichroism
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Funding
- National Institutes of Health [R01GM111480]
- Sloan Research Fellowship
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Detailed studies of iron speciation and mechanism in iron-catalyzed cross-coupling reactions are critical for providing the necessary fundamental insight to drive new reaction development. However, such insight is challenging to obtain due to the prevalence of mixtures of unstable, paramagnetic organoiron species that can form in this chemistry. A physical-inorganic research approach combining freeze-trapped inorganic spectroscopic studies, organometallic synthesis and GC/kinetic studies provides a powerful method for studying such systems. Mossbauer, EPR and MCD spectroscopy enable the direct investigation of insitu formed iron species and, combined with GC analysis, the direct correlation of reactions of specific iron species to the generation of organic products. This review focuses on a description of the key methods involved in this physical-inorganic approach, as well as examples of its application to investigations of iron-SciOPP catalyzed cross-coupling catalysis.
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