Iron III compounds with 5 f spin state

4 Iron(III) Compounds with 5 = f Spin State Bis-(N,N-diaIkylditliiocarbamato)iron(ni) Halides 

Typical spectra at 1-2 K are shown in Fig. 8.7, and values are in Table 8.4. Prominent features of the Mossbauer spectra are as follows  

1-2 K with the major axis of the electric field gradient tensor perpendicular to the spin axis. 

The spin Hamiltonian appropriate to rhombic symmetry may be approximated by 

Although these initial experiments did not show any distinction between Refs, on p. 219] 

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