Catalysis Letters, Vol.92, No.3-4, 157-162, 2004
Manganese (II) modified heteropoly compounds studied by ESR
Tungstophosphoric lacunary heteropoly compounds modified with manganese ions ([PW11Mnx](5-), x = 1 - 0.02) were studied by means of ESR spectroscopy in the range of X-band. Presence of two manganese (II) species of different symmetry, characterized by two signals, one with g = similar to 2 and the second with g = 4.3, were found.