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Ammonothermal Synthesis and Crystal Structure of BaAl 2 (NH 2 ) 8 ·2NH 3
Author(s) -
Pust Philipp,
Schmiechen Sebastian,
Hintze Frauke,
Schnick Wolfgang
Publication year - 2013
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/zaac.201300088
Subject(s) - intermetallic , bar (unit) , crystallography , materials science , crystal structure , aluminium , single crystal , crystal (programming language) , diffraction , autoclave , phase (matter) , analytical chemistry (journal) , chemistry , metallurgy , physics , optics , organic chemistry , chromatography , meteorology , alloy , computer science , programming language
BaAl 2 (NH 2 ) 8 · 2NH 3 was synthesized starting from an intermetallic phase with nominal composition Al 2 Ba under ammonothermal conditions in a stainless‐steel autoclave at 823 K and 245 MPa. Single crystals were grown on aluminum substrates and prepared under low‐temperature conditions. The crystal structure ( R $\bar{3}$ c (no. 167), a = 15.7370(17), c = 28.804(6) Å, Z = 1, 1829 reflections, 65 parameters, wR 2 = 0.07) was solved on the basis of single‐crystal X‐ray diffraction data. BaAl 2 (NH 2 ) 8 · 2NH 3 contains isolated Al(NH 2 ) 4 ‐tetrahedra forming two different types of channels along [001].