Darstellung und Eigenschaften von Kupfer(II)-Hypophosphit

Thermal Behaviour of the Mixtures Na₂S? P₄S₁₀ and Na₄Ge₄S₁₀? P₄S₁₀ of the System Na₂S? GeS₂? P₄S₁₀ The mixtures of Na₂S? P₄S₁₀ and Na₄Ge₄S₁₀? P₄S₁₀ were investigated by DTA and DSC. In the system Na₂S? P₄S₁₀ the congruently melting compounds Na₃PS₄ and (NaPS₃)_x and the peritectic phase Na₄P₂S₇ were found. The IR-spectra are given. Glassy, anhydrous and hydrated Na₄Ge₄S_l0 were prepared and thermochemically characterized. The section Na₄Ge₄S₁₀? P₄S₁₀ is not quasibinary, the mixed cage-anion Ge_4?xP_xS₁₀^(4?x)? thus cannot be prepared by heating and annealing mixtures of Na₄Ge₄S₁₀ and P₄S₁₀.