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The New Carbodiimide Li 2 Gd 2 Sr(CN 2 ) 5 Having a Crystal Structure Related to That of Gd 2 (CN 2 ) 3
Author(s) -
Unverfehrt Leonid,
Ströbele Markus,
Meyer H.Jürgen
Publication year - 2013
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.201200404
Subject(s) - crystallography , crystal structure , carbodiimide , materials science , crystal (programming language) , chemistry , x ray crystallography , single crystal , diffraction , physics , computer science , polymer chemistry , optics , programming language
The new carbodiimide compounds Li 2 RE 2 Sr(CN 2 ) 5 ( RE = Sm, Gd, Eu, Tb) were prepared by a straight forward solid state metathesis reaction of RE F 3 , SrF 2 , and Li 2 (CN 2 ) at around 600 °C. The crystal structure of Li 2 Gd 2 Sr(CN 2 ) 5 was solved based on X‐ray single‐crystal diffraction data. Corresponding Li 2 RE 2 Sr(CN 2 ) 5 compounds were analyzed by isotypic indexing of their powder patterns. The crystal structure of Li 2 Gd 2 Sr(CN 2 ) 5 can be well related to that of Gd 2 (CN 2 ) 3 , because both structures are based on layered structures composed of close packed layers of [N=C=N] 2– sticks, alternating with layers of metal ions. The crystal structure of Li 2 Gd 2 Sr(CN 2 ) 5 can be considered to contain an ABC layer sequence of [N = C=N] 2– layers with the interlayer voids being occupied by (three) distinct types of cations.