Trichloroacetates of Lanthanum, Neodymium, and Dysprosium

Abstract

Lanthanum, neodymium, and dysprosium trichloroacetates have been prepared and characterized. Vacuum pyrolysis of the anhydrous salts yields anhydrous metal chlorides.

A Solvate‐Isolated Linear Trimer CuNd2(CCl3COO)8 ⋅ 6MeCN: Structure, Synthesis and Magnetic Behavior

“…Individual metal trichloroacetates were obtained according to the procedure described in Refs. [9][10][11][27][28][29] The copper salt, Cu(CCl 3 COO) 2 • 3H 2 O, was prepared by adding (CuOH) 2 CO 3 (2 mmol) to slight excess of a concentrated water solution of trichloroacetic acid CCl 3 COOH (9 mmol, 50 ml) until the precipitate dissolved completely with continuous stirring and heating at 60°C. Then the solution was evaporated by half the volume at the same temperature.…”

“…The presence of traces of water in acetonitrile increases the solubility of salts; [10] therefore, the use of dry acetonitrile is not necessary, since water still enters the solution as a part of crystalline hydrates. When the salt was completely dissolved, the resulting solution had been stored in the desiccator with P 2 O 5 for a week so that the traces of water can be removed.…”

“…The X-ray diffraction pattern of the sample coincides with the theoretically calculated one for the known structure, which has determined by Kiriyama. [9] In the case of the neodymium salt, the structure of the compound synthesized by Tilley [10] has not been solved. Following him, Legendziewicz [11] published a method for the synthesis of neodymium trichloroacetate dihydrate, which turned out to be isostructural with Er(CCl 3 COO) 3 • 2H 2 O.…”

The Mutual Solubility of Salts of Rare Earth Elements

“…Analysis of the receiving salts is carried out by XRD diffraction on Shimadzu XRD -6000. Synthesis of initial lanthanum and erbium trichloroacetate salts is carried out in accordance with technique [9]. During the synthesis of lanthanum trichloroacetate heating the solution is avoided, since this process is accompanied with hydrolysis leads to the formation of carbonates (4).…”