Moessbauer Spectroscopy in the Characterisation of Polymetallic Cluster Compounds: a Triple Moessbauer Study of (PPh_4)Fe_2Ir_2(CO)_(12){μ~3-Au(PPh_3)}

摘要

The mixed-metal cluster compound (PPh_4)[Fe_2Ir_2(CO)_(12){μ~3-Au(PPh_3)}], which has a trigonal bipyramidal core consisting of five atoms of three different Moessbauer isotopes, was studied by ~(193)Ir, ~(197)Au and ~(57)Fe Moessbauer spectroscopy. The nature and the chemical character of the atoms located at the different sites are discussed with respect to their Moessbauer spectra.