1 Department of Chemistry, Technical University of Denmark2 unknown3 Department of Chemistry, Technical University of Denmark
Elastic neutron diffraction and Mössbauer spectroscopy have been used to study the structure, orientational-disordering (OD) transition, and melting of an Fe(CO)5 submonolayer adsorbed on Grafoil. The OD transition occurs between 150 and 167 K from a two-sublattice (sqrt×sqrt) structure to a nearly (sqrt×sqrt) phase in which the molecules are believed to rotate about the surface normal. Mössbauer spectra exhibit a more abrupt variation with temperature near melting at 170 K than through the OD transition.
Physical Review B Condensed Matter, 1983, Vol 27, Issue 9, p. 5864-5867