Abstract
Abstract The conditions of the formation of Y(III) and lanthanide (III) (LaLu) isocinchomeronates were studied, and their quantitative compositions and solubilities in water at 293 K were determined. The IR spectra of the hydrated complexes were recorded and their thermal decomposition in static air were determined. During heating the hydrated isocinchomeronates Ln2(C7H3NO4)3·nH2O (n = 6−20) lose some (Ce, Pr, DyTm) or all (Y, La, NdTm, Dy, Lu) of their crystallization water molecules in one (Y, La, PrDy, Er, Yb, Lu) or two (Ce, Ho, Tm) steps then the hydrated complexes decompose directly to the oxides (Y, Ce, PrLu) or with intermediate formation of oxocarbonates Ln2O2CO3 (La).
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