The preparation and some properties of ferricinium trichloroferrate(II) and ferricinium tribromoferrate(II)

The preparation and characterization of ferricinium trichloroferrate(II) and ferricinium tribromoferrate(II) are reported. The first salt crystallizes in the form of square, thin, platelets of d = 1.654 g/cm3. Its unit cell was determined to be orthorhombic with a = 14.49 Å, b = 14.52 Å, c = 13.38 Å and Z = 8. The second salt crystallizes in the form of thin parallelopiped platelets of d = 1.964 g/cm3. Its unit cell was determined to be also orthorhombic with a = 9.92 Å, b = 13.96 Å, c = 11.79 Å and Z = 4.