Synthesis and crystal structure of the isotypic rare earth thioborates Ce[BS3], Pr[BS3], and Nd[BS3]

✍ Scribed by Jens Hunger; Marija Borna; Rüdiger Kniep

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 388 KB
• Volume: 183
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2010.01.002

✦ Synopsis

The orthothioborates Ce[BS 3 ], Pr [BS 3 ] and Nd[BS 3 ] were prepared from mixtures of the rare earth (RE) metals together with amorphous boron and sulfur summing up to the compositions CeB 3 S 6 , PrB 5 S 9 and NdB 3 S 6 . The following preparation routes were used: solid state reactions with maximum temperatures of 1323 K and high-pressure high-temperature syntheses at 1173 K and 3 GPa. Pr[BS 3 ] and Nd[BS 3 ] were also obtained from rare earth chlorides RECl 3 and sodium thioborate Na 2 B 2 S 5 by metathesis type reactions at maximum temperatures of 1073 K. The crystal structure of the title compounds was determined from X-ray powder diffraction data. The thioborates are isotypic and crystallize in the orthorhombic spacegroup Pna2 1 (No.