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Preparation and Crystal Structure of Li 4 [TaN 3 ]
Author(s) -
Niewa R.,
Zherebtsov D. A.,
Borrmann H.,
Kniep R.
Publication year - 2002
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200211)628:11<2505::aid-zaac2505>3.0.co;2-s
Subject(s) - crystallography , chemistry , crystal structure , superstructure , metal , single crystal , stereochemistry , physics , organic chemistry , thermodynamics
The new lithium nitridotantalate(V), Li 4 [TaN 3 ], was prepared by reaction of Li 15 [CrN 4 ] 2 N with the wall of a welded Ta ampoule in the presence of metallic Li at 1470 K. Li 4 [TaN 3 ] forms colourless single crystals (platelets, space group Ibca , No. 73, a = 491.85(4) pm, b = 973.59(6) pm, c = 1415.0(1) pm, Z = 8, R1 = 0.0288). The crystal structure is described as Li 2 O superstructure with ordered occupation of the tetrahedral sites by Li and Ta. The resulting arrangement leads to infinite chains ∞ 1 [TaN 2 N 2/2 4— ] running along [100].