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Preparation and Crystal Structure of Na 7 Ba 14 CaN 6 : A New Subnitride in the Na x Ba 14 CaN 6 Series
Author(s) -
Vajenine Grigori V.,
Simon Arndt
Publication year - 2001
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/1099-0682(200105)2001:5<1189::aid-ejic1189>3.0.co;2-j
Subject(s) - chemistry , crystallography , crystal structure , tetrahedron , octahedron , series (stratigraphy) , crystal (programming language) , geology , paleontology , computer science , programming language
The crystal structure of a new subnitride, Na 7 Ba 14 CaN 6 , could be solved and refined based on single crystal and powder X‐ray diffraction data. The compound contains Ba 14 CaN 6 clusters, which are arranged in a Na matrix as in the other subnitrides of the Na x Ba 14 CaN 6 ( x = 8, 14, 17, 21, 22) series. The Ba 14 CaN 6 clusters form a slightly distorted ccp arrangement, with octahedral holes filled by Na 7 units and with tetrahedral holes remaining empty. Details of the crystal structure, such as packing and occurrence of voids, are compared to these in closely related Na 8 Ba 14 CaN 6 . Preparations of samples composed mostly of Na 7 Ba 14 CaN 6 and intergrown crystals of Na 7 Ba 14 CaN 6 and Na 8 Ba 14 CaN 6 are described.