Mössbauer Spectra of Tris(diorganothioselenocarbamato)- and Tris(diorganodiselenocarbamato)iron(III) Complexes
Room temperature 57Fe Mössbauer spectra of several tris(diorganothioselenocarbamato)- and tris(diorganodiselenocarbamato)iron(III) complexes are reported, along with their room temperature magnetic moments for the solid state. These results are compared to the previously reported diethyl derivatives and to the corresponding monothio- and dithiocarbamates. Each complex exhibited a single, quadrupole-split absorption in its Mössbauer spectrum. Although variations are noted within specific organic substituents, general trends for the average isomer shifts of all ligands are -OSCNR2 < -S2CNR2 ∼-SSeCNR2 ∼-Se2CNR2, while the typical order of the quadrupole splittings for a given ligand is -OSCNR2 < -S2CNR2 < -SSeCNR2 < -Se2CNR2. For the same organic substituent, the magnetic moments usually decrease in the order -OSCNR2 > -S2CNR2 > -SSeCNR2 > -Se2CNR2. It is noteworthy that higher quadrupole splittings are observed for the symmetric diselenocarbamate iron(III) complexes than for the corresponding thioselenocarbamates. © 1990.
W. Dietzsch et al., "Mössbauer Spectra of Tris(diorganothioselenocarbamato)- and Tris(diorganodiselenocarbamato)iron(III) Complexes," Inorganica Chimica Acta, Elsevier, Jan 1990.
The definitive version is available at http://dx.doi.org/10.1016/S0020-1693(00)80511-3
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