English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

The Water-Rich Iodidobismuthate (H3O)Rb3BiI7·4H2O

MPS-Authors
/persons/resource/persons126823

Ruck,  Michael
Michael Ruck, Max Planck Fellow, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Chang, J.-H., Albrecht, R., Doert, T., & Ruck, M. (2019). The Water-Rich Iodidobismuthate (H3O)Rb3BiI7·4H2O. Zeitschrift für anorganische und allgemeine Chemie, 646(13), 609-613. doi:10.1002/zaac.201900209.


Cite as: https://hdl.handle.net/21.11116/0000-0005-4D70-7
Abstract
Red cuboid crystals of the water-rich iodidobismuthate(III) (H3O)Rb3BiI7 center dot 4H(2)O crystallize from a solution of RbI and BiIO in concentrated aqueous HI at ambient conditions. X-ray diffraction reveale an orthorhombic structure with space group Pnma (no. 62). In the crystal structure, [BiI6](3-) octahedra are arranged in layers parallel to (010). Nine-fold coordinated Rb+ and additional I- ions connect the iodidobismuthate(III) groups into a three-dimensional framework, which hosts protonated water complexes (1)(infinity)[H11O5](+), i.e. infinite zigzag chains of hydrogen-bonded water molecules and oxonium cations. (H3O)Rb3BiI7 center dot 4H(2)O decomposes in air at ambient temperature within few days, resulting in fragmentation and amorphization of the crystals. Fast and complete dehydration occurs between 50 degrees C and 100 degrees C. Hydrates like this are possible intermediates in the slow hydrolysis of bismuth-based halide perovskites, which are currently discussed as lead-free alternatives to the solar cell absorber material methylammonium lead triiodide (MAPI).