On the Nature of the High Spin-low Spin Crossover in Tris(N-ethyl-N-phenyldithiocarbamato)iron(III)
The infrared spectrum in the metal-ligand region of the title complex has been studied as a function of pressure and compared with that of tris(1-pyrrolidinecarbodithioato-S,S′)iron(III), tris(N,N-dicyclohexyldithiocarbamato)iron(III) and the chromium(III) analogues. Only the title complex lies at the high spin (6A1)-low spin (distortion split 2T2) crossover, and it alone has two metal-sulfur bands. The intensity of the band assigned to the 2T2 state increases relative to the 6A1 band with increasing pressure. The results are interpreted in terms of an equilibrium between distinct high spin and low spin species instead of a single intermediate spin state which has also been suggested for this system by other workers.
R. J. Butcher et al., "On the Nature of the High Spin-low Spin Crossover in Tris(N-ethyl-N-phenyldithiocarbamato)iron(III)," Inorganic Chemistry, American Chemical Society (ACS), Jan 1976.
The definitive version is available at https://doi.org/10.1021/ic50163a012
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© 1976 American Chemical Society (ACS), All rights reserved.