Polyoxocationic Antimony Oxide Cluster with Acidic Protons

Published

June 17, 2022

Author(s)

Yuki Watanabe, Kim Hyeon-Deuk, Takafumi Yamamoto, Masayoshi Yabuuchi, Olesia M. Karakulina, Yasuto Noda, Takuya Kurihara, I-Ya Chang, Masanobu Higashi, Osamu Tomita, Cedric Tassel, Daichi Kato, Jingxin Xia, Tatsuhiko Goto, Craig Brown, Yuto Shimoyama, Naoki Ogiwara, Joke Hadermann, Artem M. Abakumov, Sayaka Uchida, Ryu Abe, Hiroshi Kageyama

Abstract

The success and continued expansion of research in polyoxometalates (POMs) owe largely to their structural richness and wide range of functions. However, while most POM clusters known to date are negatively charged, there is only a handful of cationic POMs, much less functional ones. Here, we show that the all-inorganic hydroxyiodide H₅₁Sb₁₄₃O₂₀₀I₈₀ (HSbOI), form a face-centered cubic structure with cationic Sb₃₂O₄₄ clusters and two types of smaller anionic clusters in interstitial spaces. The cationic cluster is characterized by the presence of highly acidic protons on its surface due to significant Sb³⁺ deficiencies, which enables heterogeneous acid-catalyzed reactions with high reaction rates, despite the absence of transition metals. This result opens a new avenue for the functionalization of POMs containing main group elements.

Citation

Science Advances

Volume

8

Issue

24

Pub Type

Journals

Keywords

catalyst, crystallography, cluster

Citation

Watanabe, Y. , Hyeon-Deuk, K. , Yamamoto, T. , Yabuuchi, M. , Karakulina, O. , Noda, Y. , Kurihara, T. , Chang, I. , Higashi, M. , Tomita, O. , Tassel, C. , Kato, D. , Xia, J. , Goto, T. , Brown, C. , Shimoyama, Y. , Ogiwara, N. , Hadermann, J. , Abakumov, A. , Uchida, S. , Abe, R. and Kageyama, H. (2022), Polyoxocationic Antimony Oxide Cluster with Acidic Protons, Science Advances (Accessed October 10, 2025)