Metal atom dynamics in four triferrocenylmethane derivatives and the crystal structure of Fc3COH

Abstract

The metal atom dynamics of four triferrocenylmethane derivatives have been elucidated, using temperature-dependent ⁵⁷Fe Mössbauer effect (ME) spectroscopy. The hyperfine parameters (IS and QS) at 90 K are compared to each other and those of related ferrocenoids. The metal atom vibrational amplitudes as a function of temperature have been extracted from the ME recoil-free fraction data, and are compared to the X-ray U_i,jvalues for two of the compounds. The single crystal structural data for triferrocenylmethanol have been determined at 173 and 295 K. The vibrational anisotropy of the metal atom for all of the compounds is negligibly small over the accessible temperature range.