Na2ZrS3: Ein ternäres Sulfid des Zirconiums mit aufgefüllter AlCl3-Struktur

✍ Scribed by Falk Lissner; Thomas Schleid

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: German
• Weight: 96 KB
• Volume: 625
• Category: Article
• ISSN: 0372-7874
• DOI: 10.1002/(sici)1521-3749(199902)625:2<195::aid-zaac195>3.0.co;2-v

✦ Synopsis

Dark green, plate-like single crystals of Na 2 ZrS 3 (monoclinic, C2/m; a = 664.69(6), b = 1152.5(1), c = 695.48(7) pm, b = 108.78(1)°; Z = 4) are obtained along with pale yellow platelets of NaZr 2 N 2 SCl (trigonal, R 3m; a = 363.56(3), c = 2951.2( 4) pm; Z = 3) upon oxidation of zirconium metal with sulfur and sodium azide (NaN 3 ) in the presence of fluxing NaCl (molar ratio 7 : 6 : 2 : 3) in evacuated silica tubes at 850 °C within three weeks. The crystal structure is best described as stuffed AlCl 3 type with all cations (Na + and Zr 4+ ) in octahedral coordination of the S 2± anions, which build up a cubic closest packed host lattice. The internuclear metal sulfur distances range from 276 to 296 pm for all three crystallographically different Na + cations, and from 258 to 260 pm for Zr 4+ .