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Synthesis, Characterization, and Chemical Bonding Analysis of the Lithium Alkaline‐earth Metal Gallide Nitrides Li 2 (Ca 3 N) 2 [Ga 4 ] and Li 2 (Sr 3 N) 2 [Ga 4 ]
Author(s) -
Pathak Manisha,
Stoiber Dominik,
Bobnar Matej,
Ovchinnikov Alexander,
Ormeci Alim,
Niewa Rainer,
Höhn Peter
Publication year - 2017
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.201700296
Subject(s) - alkaline earth metal , lithium (medication) , alkali metal , nitride , materials science , chemical bond , inorganic chemistry , band gap , ionic bonding , ionic radius , diamagnetism , metal , carbide , octahedron , crystal structure , crystallography , chemistry , metallurgy , nanotechnology , ion , medicine , physics , optoelectronics , organic chemistry , layer (electronics) , quantum mechanics , magnetic field , endocrinology
Large single crystals of Li 2 (Ca 3 N) 2 [Ga 4 ] and Li 2 (Sr 3 N) 2 [Ga 4 ] up to several mm in size were grown from mixtures of the respective elements and binary alkaline‐earth metal nitrides in reactive lithium melts employing a modified high‐temperature centrifugation‐aided filtration (HTCAF) technique. The main structural features of these isotypic phases are stella quadrangula building units [Ga 4 ]Li 4/2 and octahedra (N ae 6/2 ), which form two independent interpenetrating networks. The phases crystallize in the η‐carbide structure and represent diamagnetic small bandgap semiconductors. Real‐space chemical bonding analysis indicates predominantly ionic bonding.