The crystal structure of tris (ethylenediamine), cobalt(III) hexacyanoferrate(III)dihydrate, Co(C2H8N2)3[Fe(CN)6] · 2H2O
- 1 May 1972
- journal article
- research article
- Published by Wiley in Zeitschrift für anorganische und allgemeine Chemie
- Vol. 389 (3) , 307-314
- https://doi.org/10.1002/zaac.19723890311
Abstract
The crystal structure of the title compound has been determined from three dimensional x‐ray data obtained by the multiple film method. The space group is P2l/n and the cell dimensions are: a = 14.90, b = 16.84, c = 8.38 Å; β = 93.5° Z = 4. The structure is formed by discrete Co (en) and Fe(CN) ions, both of which have an octahedral configuration. The Fe(CN) ions are approximately octahedrally surrounded by the Co (en) ions while arrangement of Fe (CN) ions around the Co(en) ions completely differs from an octahedron. The mean FeC and CoC dustances are 1.91 and 2.01 Å, respectively. The water molecules do not play an important role in the structure and all distances between oxygen and other atoms indicate the presence of very weak hydrogen bonds. The salts M (en)3 Q(CN)6 · H2O, where M = Co and Cr and Q = Cr, Mn, Fe and Co, are all isomorphous.Keywords
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