Physical and chemical transformations of iron pentacarbonyl under pressure

18th APS-SCCM; 24th AIRAPT

Ryu, Young Jay^1,3 ; Yoo, Choong Shik^1,2,3

Department of Material Science and Engineering, Washington State University, United States^1

Department of Chemistry, Washington State University, United States^2

Institutes for Shock Physics, Washington State University, United States^3

关键词: Chemical transformations;    Confocal micro Raman spectroscopy;    Diamond-anvil cell;    Iron pentacarbonyls;    Polymeric solids;    Raman spectral;    Solid polymorphs;    Transformation diagrams;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/2/022011/pdf
DOI  :  10.1088/1742-6596/500/2/022011

来源: IOP

【 摘 要 】

We have studied the physical and chemical transformations of iron pentacarbonyl (Fe(CO)5) in externally-heated diamond anvil cells using in-situ confocal micro-Raman spectroscopy. Raman spectroscopy of Fe(CO)5were used to identify three different solid polymorphs and a polymeric solid found at high pressures, yielding the phase/chemical transformation diagram to 20 GPa. The pressure-induced Raman spectral changes suggest that liquid Fe(CO)5undergoes several phase transformations at room temperature to phase I at 0.3 GPa, phase II at 1.5 GPa, and phase III at 4.9 GPa that polymerizes above 15.2 GPa.