Chemical reactions of localized Fe atoms in ethylene and acetylene matrices at low temperatures using in-beam Mössbauer spectroscopy

• Published in: Hyperfine interactions 2018-12, Vol.239 (1), p.1-9, Article 18
• Main Authors: Kobayashi, Y., Yamada, Y., Kubo, M. K., Mihara, M., Sato, W., Miyazaki, J., Nagatomo, T., Takahashi, K., Tanigawa, S., Sato, Y., Natori, D., Suzuki, M., Kobayashi, J., Sato, S., Kitagawa, A.
• Format: Article
• Language: English
• Subjects: 3-8 September 2017; Acetylene; Atomic; Chemical reactions; Condensed Matter Physics; Density functional theory; Ethylene; Hadrons; Heavy Ions; Implantation; Iron 57; Low temperature; Molecular; Mossbauer spectroscopy; Nuclear Physics; Optical and Plasma Physics; Physics; Physics and Astronomy; Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2017); Russia; Saint-Petersburg; Spectrum analysis; Surfaces and Interfaces; Thin Films
• ISSN: 0304-3843; 1572-9540
• DOI: 10.1007/s10751-018-1494-2

In-beam Mössbauer spectroscopy of 57 Fe using a short-lived 57 Mn ( T 1/2 = 89 s) implantation was applied to study the chemical products of localized Fe atoms in ethylene and acetylene matrices at low temperatures. The spectra obtained in both matrices were analyzed as three doublets. In ethylene at 14 K, Fe(C 2 H 4 ) 2 (Fe 0 , S = 1), [Fe(C 2 H 4 ) 3 ] + (Fe + , S = 3/2), and [Fe(C 2 H 4 ) 2 ] + (Fe + , S = 3/2) were assigned as derived from the Mössbauer parameters and density functional theory calculations. On the other hand, the products of [Fe(C 2 H 2 ) 2 ] + (Fe + , S = 3/2) and [(C 2 H 2 )FeCCH 2 ] + (Fe + , S = 3/2) were determined in the acetylene matrix at 17 K.