Journal article

Publication year: 2019

Pages: 10983-10990

Journal: Inorganic Chemistry

Volume number: 58

Issue number: 16

ISSN: 0020-1669

eISSN: 1520-510X

DOI Link: https://doi.org/10.1021/acs.inorgchem.9b01466

Publisher: American Chemical Society

Abstract: 
Multinary organic-inorganic metal halide materials beyond the perovskite motif can help to address both fundamental aspects such as the electronic interactions between different metalate building units and practical issues like stability and ease of preparation in this new field of research. However, such multinary compounds have remained quite rare for the halogenido pentelates, as the formation of simpler side phases can be a significant hindrance. Here, we report a family of four new multinary iodido pentelates [PPh4](2)[ECu2I7(nitrile)] (E = Sb, Bi; nitrile = acetonitile or propionitrile), including the first metalate with a Cu-I-Sb unit. The compounds can be obtained by facile solution or mechanochemical methods and display good stability up to 160 degrees C. A comparison with compounds containing binary anions [EI6](3-) reveals that, unexpectedly, the addition of the iodido cuprate unit causes a blue-shift in the absorption of the antimonates but a red-shift in the bismuthates. Photoluminescence investigations at 10 K show that the compounds display broad luminescence bands that correspond well with the trend in their onset of absorption. Overall, the work highlights that multinary, non-perovskite halogenido metalates can be a valuable expansion of the chemistry of metal halide perovskites.

Harvard Citation style: Dehnhardt, N., Klement, P., Chatterjee, S. and Heine, J. (2019) Divergent Optical Properties in an Isomorphous Family of Multinary lodido Pentelates, Inorganic Chemistry, 58(16), pp. 10983-10990. https://doi.org/10.1021/acs.inorgchem.9b01466

APA Citation style: Dehnhardt, N., Klement, P., Chatterjee, S., & Heine, J. (2019). Divergent Optical Properties in an Isomorphous Family of Multinary lodido Pentelates. Inorganic Chemistry. 58(16), 10983-10990. https://doi.org/10.1021/acs.inorgchem.9b01466