The Crystal Structures of the Tetragonal Monoxides of Lead, Tin, Palladium, and Platinum

The present investigation was undertaken to resolve these discrepancies. We have verified the Dickinson-Friauf structure for plumbous oxide, have shown that stannous oxide has the same structure, and have found that palladous oxide is not isomorphous with these crystals, but has the structure suggested by Huggins. We have also found that platinous oxide has this same structure.