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Ba 3 N – a New Binary Nitride of an Alkaline Earth Metal
Author(s) -
Steinbrenner U.,
Simon A.
Publication year - 1998
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/(sici)1521-3749(199802)624:2<228::aid-zaac228>3.0.co;2-8
Subject(s) - chemistry , crystallography , nitride , alkaline earth metal , stoichiometry , metal , hexagonal crystal system , organic chemistry , layer (electronics)
Reacting Ba and N 2 in the stoichiometric ratio 6 : 1 at 670 K, homogenizing the product at 570 K in the presence of Na and subsequently distilling off the Na yields Ba 3 N. This new subnitride decomposes into Ba 2 N and Ba at 830 K. Its structure represents a hexagonal rod packing of Ba 6/2 N chains ( anti ‐TiI 3 type, space group P6 3 /mcm ; a = 764.18(2) pm, c = 705.01(5) pm; Ba in 6 g with x = 0.2721(2), N in 2 b ). The peculiarity of a very spaceous packing of these rods is addressed and discussed as possibly due to a quantum size effect.