Thermal, spectroscopic and electrical properties of lead pyrophosphate glass prepared by melt quenching have been examined.
A model based on the structural disproportionation of the P
2O
7
4−
ions has been proposed and is shown to consistently explain all the observations. The equilibrium of various anionic species
has been discussed on the basis of their electronegativities which are in turn related to their basicities.
Keywords Pb2P2O7 glass - anion disproportionation - molecular electronegativities
Communication No. 129 from the Materials Research Centre