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Die Kristallstruktur von H 3 Co(CN) 6
Author(s) -
Güdel H. U.,
Ludi A.,
Bürki H.
Publication year - 1968
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19680510622
Subject(s) - chemistry , octahedron , crystallography , cobalt , crystal structure , bond length , group (periodic table) , atom (system on chip) , infrared spectroscopy , inorganic chemistry , organic chemistry , computer science , embedded system
The crystal structure of the hexagonal H 3 Co(CN) 6 ( a = 6.43 Å, c = 5.70 Å, Z = 1) has been determined by X‐ray powder methods. The space group is D 3d 1(at least pseudo), the cobalt atoms being in (0, 0, 0). Structure factor calculations lead to a final R ‐value of 13.2%, based on F 2 ‐sums of coinciding reflections. The carbon and nitrogen atoms are located at the vertices of a slightly distorted octahedron around the cobalt atom; the angle CoCN is 177°. The interatomic distances are: CoC = 1.89 Å, CoN = 2,98 Å, CN = 1.09 Å. The pseudo‐octahedral units of Co(CN) 6 are linked together by NHN bridges. Infrared spectra show that the most probable linkage is the one with a NHN‐bond length of 2.7 Å.