Comprehensive Description of Heme Iron Dynamics From X-ray Vibrational Spectroscopy

摘要

Nuclear resonance vibrational spectroscopy (NRVS) reveals the vibrational dynamics of a Mossbauer probe nucleus. Here, 57Fe NRVS measurements yield the complete spectrum of Fe vibrations in halide complexes of iron porphyrins. Iron porphine serves as a useful comparison with the more complex spectrum of less symmetric heme molecules that contribute to numerous essential biological processes.