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- Title
Two Supramolecular Inorganic-Organic Hybrid Crystals Based on Keggin Polyoxometalates and Crown Ethers.
- Authors
Xiong, Jun; Luo, Teng; Zhang, Jun; Li, Xiao-Xia; Lv, Shao-Fang; Peng, Jun-Jun; Li, Ming; Li, Wei; Nakamura, Takayoshi
- Abstract
Newsupramolecular structureswere designed in thiswork using large-sized polyoxometalates (POMs) and crown-ether-based supramolecular cations selected as building blocks. Two novel supramolecular inorganic-organic hybrids [(3-F-4-MeAnis)([18]crown-6)]2[SMo12O40]•CH3CN (1) and [(4-IAnis)([18]crown-6)]3[PMo12O40]•4CH3CN (2) (3-F-4-MeAnis = 3-fluoro-4-methylanilinium and 4-IAnis = 4-iodoanilinium) were synthesized. Crystals 1 and 2 have been characterized by infrared spectroscopy (IR) and elemental analysis (EA). Based on X-ray diffraction analysis, Crystals 1 and 2 were constructed through noncovalent bonding interactions and belong to different space groups due to the difference of the building blocks used. Supramolecular cations formed due to strong N-H···O hydrogen bonding interactions between the six oxygen atoms of [18]crown-6 molecules and nitrogen atoms of anilinium derivatives. Crystal 1 has two different supramolecular cations with an anti-paralleled arrangement that forms a dimer throughweak hydrogen bonding interactions between adjacent [18]crown-6 molecules. Crystal 2 has three independent supramolecular cations that fill large spaces between the [PMo12O40] polyoxoanions forming a rhombus-shape packing arrangement in the ac plane. Crystals 1 and 2 are unstable at room temperature.
- Subjects
SUPRAMOLECULAR chemistry; POLYOXOMETALATES; CRYSTAL structure
- Publication
Crystals (2073-4352), 2018, Vol 8, Issue 2, p17
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst8020017