Iron II salts of oxyacids and other anions

2 Iron(II) Salts of Oxyacids and Other Anions [Fe(H20)6]SiF6 

At high temperatures the susceptibility x is small and at fields up to 30 kG the value of 5 /S)//n is very small. The effective field is close to as assumed in the magnetic perturbation method for determining the sign of 

0-99 I — y y + 0-09 z . The contributions to H were estimated assuming that the observed field of 185 kG at 4-2 K was negative in sign (see Table 

Excited-state electronic levels have been estimated to lie at 360 cm and 1680 cm [5, 19], and the positive sign of e qQ has been verified by the magnetic perturbation method [32]. 

Iron(II) sulphate heptahydrate contains four formula weights per unit cell on two distinct sites A and B. The immediate iron environment in both cases is a distorted octahedron of oxygens so that the compound contains [Fe(H20)e] +. The two types of sites are so similar as to generate only one Mbssbauer quadrupole doublet, but the relative orientations of the four iron positions are important in interpreting the asymmetry of the quadrupole doublet in oriented single crystals. Such measurements have been made 

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