14187-32-7. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 14187-32-7, Name is Dibenzo-18-crown-6. In a document type is Conference Paper, introducing its new discovery.
New high-dimensional networks based on polyoxometalate and crown ether building blocks
Three novel supramolecular assemblies constructed from polyoxometalate and crown ether building blocks, [(DB18C6)Na(H2O)Na(H2O)1.5] 2Mo6O19¡¤CH3CN, 1, and [{Na(DB18C6)(H2O)2}3 (H2O)2]XMo12O40 ¡¤6DMF¡¤CH3CN (X = P, 2, and As, 3; DB18C6 = dibenzo-18-crown-6; DMF = N,N-dimethylfomamide), have been synthesized and characterized by elemental analyses, IR, UV-vis, EPR, TG, and single crystal X-ray diffraction. Compound 1 crystallizes in the tetragonal space group P4/mbm with a = 16.9701(6) A, c = 14.2676(4) A, and Z = 2. Compound 2 crystallizes in the hexagonal space group P63/m with a = 15.7435(17) A, c = 30.042(7) A, gamma = 120, and Z = 2. Compound 3 crystallizes in the hexagonal space group P63/m with a = 15,6882(5) A, c = 29.9778(18) A, gamma = 120, and Z = 2. Compound 1 exhibits an unusual three-dimensional network with one-dimensional sandglasslike channels based on the extensive weak forces between the oxygen atoms on the [MO6O19]2- polyoxoanions and the CH2 groups of crown ether molecules. Compounds 2 and 3 are isostructural, and both contain a novel semiopen cagelike trimeric cation [{Na(DB18C6)(H2O)2}3 (H2O)2]3+. In their packing arrangement, an interesting 2-D “honeycomblike” “host” network is formed, in which the [XMo12O40]3- (X = As and P) polyoxoanion “guests” resided.
14187-32-7, I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 14187-32-7, help many people in the next few years.
Reference£º
Chiral Catalysts,
Chiral catalysts – SlideShare