Synthetic Route of 14187-32-7. Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about 14187-32-7, Name is Dibenzo-18-crown-6
Synthesis, characterization and crystal structures of dibenzo-18-crown-6 sodium isopolytungstates
Two novel dibenzo-18-crown-6 sodium isopolytungstates, [(DB18C6)(CH3OH)Na]2 W6O19¡¤DB18C6¡¤H2O 1 and [(DB18C6)(DMF)2Na]4 W10O32¡¤2DMF¡¤2H2O 2, have been synthesized in mixed methanol and acetonitrile solvents and characterized by elemental analysis, TGA, IR and single crystal X-ray diffraction. The compound 1 crystallizes in the monoclinic space group C2/c with a = 23.182(8), b = 19.527(2), c = 18.737(3) A?, beta = 115.15(2), V = 7678(3) A?3, Z = 4, and R1(wR2) = 0.0611(0.1504). The compound 2 crystallizes in the monoclinic space group P21/n with a = 16.516(2), b = 22.325(6), c = 20.425(7) A?, beta = 91.78(2), V = 7528(3) A?3, Z = 2, and R1(wR2) = 0.0397(0.0773). The compound 1 exhibits a novel organic-inorganic sandwich-type structure, in which the crown ether-sodium complexes are coordinated to the terminal oxygen atoms of W6O192-. In compound 2, all Na+ ions are thoroughly enveloped into the organic moieties of crown ether and DMF molecules and are connected with the ‘naked’ polyanions W10O324- via the electrostatic attraction.
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Chiral Catalysts,
Chiral catalysts – SlideShare