SR-3[AL2N4] - A NITRIDOALUMINATE WITH COR RUGATED TETRAHEDRAL CHAINS (1)(INFINITY)[ALN(4 2)(3-)]/

Authors
BLASE W CORDIER G LUDWIG M KNIEP R
Citation
W. Blase et al., SR-3[AL2N4] - A NITRIDOALUMINATE WITH COR RUGATED TETRAHEDRAL CHAINS (1)(INFINITY)[ALN(4 2)(3-)]/, Zeitschrift fur Naturforschung. B, A journal of chemical sciences, 49(4), 1994, pp. 501-505
Citations number
54
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Zeitschrift fur Naturforschung. B, A journal of chemical sciences → ACNP
ISSN journal
09320776
Volume
49
Issue
4
Year of publication
1994
Pages
501 - 505
Database
ISI
SICI code
0932-0776(1994)49:4<501:S-ANWC>2.0.ZU;2-2
Abstract
Sr-3[Al2N4] (Pnna, Nr. 52; a = 590.1(3), b = 1000.5(5), c = 958.0(4) p m; Z = 4) was prepared from the elements (molar ratio Sr:Al = 3:1; rea ction with N-2, 1 atm, 24 h; T-max = 1100 degrees C). The crystal stru cture contains corrugated chains (1)(infinity)[AlN4/23-] which consist of distorted AlN4 tetrahedra sharing common edges (Al-N: 188.5(7)-195 .8(7) pm; N-Al-N: 95.0(3)-126.0(5)degrees). The nitrogen atoms form a distorted ccp arrangement. 3/4 of the octahedral holes are occupied by Sr atoms; 1/4 of the tetrahedral holes are occupied by Al atoms. Sr-3 [Al2N4] can be described in terms of the Zintl concept (isosteric rela tion of[AlN2](3-) to SiS2).