1211-37-6Relevant articles and documents
Herringbone structures of 2,7-dihalogenated acridine tailored by halogen-halogen interactions
Yamamura, Masaki,Ikuma, Seira,Nabeshima, Tatsuya
, p. 59 - 64 (2015)
The crystal structures of the 2,7-dibromo- and 2,7-diiodoacridines (2 and 3) were determined by single-crystal X-ray diffraction analysis. Molecules of the brominated 2 were assembled through different types of halogen-halogen interactions (Type-I and Type-II). Conversely, molecules of the iodinated 3 were assembled only through Type-II interactions. Although both compounds were packed in a herringbone way, the intermolecular π-π stacking was observed only in the brominated 2. In the solution and solid-state absorption spectra, a bathochromic shift in the absorption was observed, as the mass of the halogen atoms increased. Theoretical calculation indicated a substituent effect of the halogen on the π-orbital of the acridine moiety. In the solid state, the iodinated 3 exhibited a significant absorption in the orange-to-red wavelength region.
Unusual preservation of polyhedral molecular building units in a metal-organic framework with evident desymmetrization in ligand design
Xie, Yabo,Yang, Hui,Wang, Zhiyong U.,Liu, Yangyang,Zhou, Hong-Cai,Li, Jian-Rong
, p. 563 - 565 (2014)
A new porous metal-organic framework (MOF) with three types of preserved polyhedral molecular building units, all of which have been observed in a series of isostructural MOFs constructed from highly symmetrical hexacarboxylic ligands, was formed even from a pre-designed related tetracarboxylic ligand with drastically reduced symmetry. The Royal Society of Chemistry 2014.
Bridged Organosilane and Production Method Thereof
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Page/Page column 28, (2009/04/24)
Provided is a bridged organosilane, which has a large complex organic group, and which is useful in the synthesis of a mesoporous silica and a light-emitting material, and a production method of the bridged organosilane. The bridged organosilane is expressed by the following general formula (1): [in the formula (1), q represents an integer in a range from 2 to 4, X1— represents a substituent selected from the group consisting of substituents expressed by the following general formulae (2) to (5): (in the formulae (2) to (5), R1 represents alkyl group having 1 to 5 carbon atoms, R2 represents an allyl group, and n represents an integer in a range from 0 to 3, and m represents an integer in a range from 0 to 6), and A1 represents an organic group expressed by, for example, the following general formula (6): (in the formula (6), Y1 represents a substituent expressed by, for example, O═C)].
