Single cell hydration properties

The hydrate Th(HCOO)4,0.66H2O can exist at room temperature in two polymorphic forms, L and The structure of the L modification is well known it is isomorphous with A-Th(HCOO)4. An analysis of the JT-ray diffraction data of single crystals and powders of the M form of Th(HCOO)4,-O.66H2O has shown that at room temperature the crystals are orthorhombic, with space group P2i2i2i, and the unit-cell parameters area =6.761 0.003, b — 10.491 0.005, c = 12.323 0.005 A. The preparation of pluto-nium(m) formate by the reaction of plutonium(m) hydroxide with formic acid has been reported. Characterization of the new compound has been accomplished by analysis, t.g.a., A"-ray powder diffraction, and i.r. spectroscopy it was found to be formally analogous to the well-known lanthanide(ui) formates in all its properties. 

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