In:
Zeitschrift für Naturforschung B, Walter de Gruyter GmbH, Vol. 51, No. 1 ( 1996-1-1), p. 1-8
Abstract:
Ba 2 Na(CN 2 )(CN) 3 was obtained by the reaction of Ba 2 N with melamine and NaCN at 700 °C. The compound was structurally characterized by single-crystal X-ray investigations (Fd3̄m, a = 1518.8(3) pm, Z = 16). In the crystal structure the Ba 2+ ions form a cubic close packed arrangement, the Na + and the CN 2- 2 ions occupy the octahedral interstices. The CN - ions are located within the close packed Ba 2+ layers. The unit cell of Ba 2 Na(CN 2 )(CN) 3 contains two interpenetrating substructures of the zinc-blende structure type, building up a variant of NaTl. A reversible phase transition has been observed during cooling of the compound. Whereas the Ba 2 (CN 2 )(CN) 3 sublattice remains nearly unaffected in this process, the Na + ions of the low-temperature phase are statistically distributed on two crystallographic positions.
Type of Medium:
Online Resource
ISSN:
1865-7117
,
0932-0776
DOI:
10.1515/znb-1996-0102
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
1996
detail.hit.zdb_id:
2078109-X
detail.hit.zdb_id:
124635-5
