The Water-Rich Iodidobismuthate (H3O)Rb3BiI7·4H2O
Chang JH, Albrecht R, Doert T, Ruck M (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 646
Pages Range: 609-613
Journal Issue: 13
DOI: 10.1002/zaac.201900209
Abstract
Red cuboid crystals of the water-rich iodidobismuthate(III) (H3O)Rb3BiI7·4H2O 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∞[H11O5]+, i.e. infinite zigzag chains of hydrogen-bonded water molecules and oxonium cations. (H3O)Rb3BiI7·4H2O decomposes in air at ambient temperature within few days, resulting in fragmentation and amorphization of the crystals. Fast and complete dehydration occurs between 50 °C and 100 °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).
Involved external institutions
How to cite
APA:
Chang, J.-H., Albrecht, R., Doert, T., & Ruck, M. (2020). The Water-Rich Iodidobismuthate (H3O)Rb3BiI7·4H2O. Zeitschrift für Anorganische und Allgemeine Chemie, 646(13), 609-613. https://doi.org/10.1002/zaac.201900209
MLA:
Chang, Jen-Hui, et al. "The Water-Rich Iodidobismuthate (H3O)Rb3BiI7·4H2O." Zeitschrift für Anorganische und Allgemeine Chemie 646.13 (2020): 609-613.
BibTeX: Download
Germany (DE)