Polyoxometalatocrown ether: A new type of metallacrown ether based on polyoxometalate
Feng‐Ping Xiao, Xiang‐Gao Meng, Longsheng Wang, Jian Hao, Chunlin Lv, Yongge Wei
Abstract
Using chain-like polyethers consisting of two terminal –NH<sub>2</sub> groups and (TBA)<sub>4</sub>[<em>α</em>-Mo<sub>8</sub>O<sub>26</sub>] as starting materials, two polyoxometalatocrown ethers were prepared by a cyclization reaction through the formation of Mo≡N triple bonds: (TBA)<sub>2</sub>[Mo<sub>6</sub>O<sub>17</sub>N(<em>o</em>-C<sub>6</sub>H<sub>4</sub>OCH<sub>2</sub>(CH<sub>2</sub>OCH<sub>2</sub>)<sub>n</sub>CH<sub>2</sub>OC<sub>6</sub>H<sub>4</sub>-<em>o</em>)N] (compounds 1 n = 1; 2 n = 2). As confirmed by single-crystal X-ray diffraction and IR studies, the polyoxometalatocrown ether 2 can capture primary ammonium cations in solid state.
Topics & Concepts
PolyoxometalateX-ray crystallographyEtherCrystallographyChemistryCrystal structureSolid-stateStereochemistryDiffractionPhysical chemistryPhysicsOrganic chemistryCatalysisOpticsPolyoxometalates: Synthesis and ApplicationsMetal-Organic Frameworks: Synthesis and ApplicationsVanadium and Halogenation Chemistry