Thermal chemistry of Mn2(CO)10 deposited on MgO thin films

Fabrice Vanolli, Ueli Heiz, Wolf Dieter Schneider

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4 Scopus citations

Abstract

Adsorption of Mn2(CO)10 at 90 K on MgO(100) thin films grown onto Mo(100) has been investigated using thermal desorption spectroscopy and infrared reflection-absorption spectroscopy. The results of infrared spectroscopy are compared with gas-phase and solid-state studies of Mn2(CO)10. Heating a deposit of 3.5 monolayers to 800 K showed first molecular desorption and an ordering of the layers towards the crystalline phase at low temperature followed by decarbonylation as the temperature increases. At 800 K only a small amount (1-3% of a monolayer of manganese) of the initial deposit remained on the surface, anchored to defects. A CO stretching frequency was still observed at this temperature and was attributed to CO strongly bound to the remaining manganese.

Original languageEnglish
Pages (from-to)780-785
Number of pages6
JournalSurface Science
Volume377-379
DOIs
StatePublished - 20 Apr 1997
Externally publishedYes

Keywords

  • Dimanganese decacarbonyl
  • Insulating films
  • Magnesium oxide
  • Physical adsorption
  • Surface chemical reaction
  • Thermal desorption

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