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Figure 7
Triangular complex anion [Zn(BH4)3]− and [Zn(BH4)Cl2]− in A8 cage of alkali metals (green). The conrotation of three BH4 groups is visible which maximizes the H−⋯H− contacts. Note the increased deformation of the alkali cage when moving from the larger K to the smaller Na. Close contacts Zn–BH4 between neighboring triangular complex anions in the Na compound are shown by a dashed line.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 71| Part 6| December 2015| Pages 619-640
https://doi.org/10.1107/S2052520615018508
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