Vibrational and magnetic properties of [C 2 H 5 NH 3 ][Fe III M II (HCOO) 6 ] (M = Mn, Ni) and [C 2 H 5 NH 3 ][Cr III Mn II (HCOO) 6 ] framework compounds

Vibrational and magnetic properties of [C 2 H 5 NH 3 ][Fe III M II (HCOO) 6 ] (M = Mn, Ni) and [C 2 H 5 NH 3 ][Cr III Mn II (HCOO) 6 ] framework compounds