ESR STUDY OF IRON COMPOUNDS FOR UNDERSTANDING NITROGEN FIXATION

点击翻译按钮获取中文摘要

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The Holland group from the University of Rochester's Department of Chemistry utilized the X-Band EPR instrumentation at ACERT to study iron compounds with hydride and sulfide donors. These studies were part of an on-going investigation of the spectroscopy of coordination compounds with the same coordination features as the iron-molybdenum cofactor of nitrogenase. These are intended to facilitate the use of spectroscopy to understand the enzyme. The continuous-flow, liquid helium cryostat available at ACERT is essential for these experiments because the EPR spectra of cyts c are typically not observed above 30 K due to a relatively short spin-lattice relaxation time.