Sodium reduction of a mixture of tetrabromosilane with imidazole ionic liquids in organic solvents gives dispersions of silicon nanoparticles stabilized by carbene ligands. It was shown that the size...

Protic metal-containing ionic liquids with the diethanolammonium cation (HO–CH₂–CH₂)₂\({\text{NH}}_{{\text{2}}}^{ + }\) (DEAH⁺) and anions \({\text{FeCl}}_{{\text{4}}}^{-}\) and \({\text{CoCl}}_{{\text{4}}}^{{{\text{2}}-}}\) (DEAHFeCl₄ (I), (DEAH)₂CoCl₄ (II)) are synthesized. The crystal structures of compounds I and II are determined by X-ray structure analysis (CIF files CCDC nos. 1957208 (I) and 1957189 (II)). Compound I has a layered structure. The layer consists of the DEAH⁺ cations with the disordered system of hydrogen bonds and attached \({\text{FeCl}}_{{\text{4}}}^{-}\) anions. The structure of compound II represents a three-dimensional framework consisting of the DEAH⁺ cations and \({\text{CoCl}}_{{\text{4}}}^{{{\text{2}}-}}\) anions linked by hydrogen bonds. The thermal analysis shows that the melting points of compounds I (45°С) and II (55°С) are lower than 100°С, the enthalpy of melting of compound I is higher than that of compound II, and the decomposition temperature of compound II (210°С) is higher than that of compound I (128°C).

Thulium trifluoroacetate compounds have been synthesized, Tm(CF3COO)3 · 3H2O ( I) and Tm2(CF3COO)6 · 2CF3COOH · 3H2O ( II). The structure of Ihas been refined by the Rietveld method on the basis of...