Oligo(ethylene Oxide)–Polyoxometalate Macrocycles
Hiroto Kaitori·Sadafumi Nishihara·Fuga Onishi·Naoyuki Hisano·Takeharu Haino·Ryo Tsunashima·Takashi Nakamura·Jun Manabe
Host–guest chemistry has predominantly advanced within organic systems, whereas the integration of inorganic frameworks into such architectures remains limited. Here, we report two types of organic–inorganic hybrid macrocycles synthesized by cyclizing lacunary Wells–Dawson–type polyoxotungstates with oligo(ethylene oxide) chains. The resulting macrocycles exhibit distinct cavity structures depending on the chain length and show significantly enhanced hydrolytic stability in aqueous solution. The