- The i.r. and Raman spectra of tetraiodophthalic anhydride, potassium tetraiodophthalimide, tetraiodophthalimide and N-d-tetraiodophthalimide
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The i.r. (4000-170 cm-1) and Raman (4000-40 cm-1) spectra were reported for polycrystalline tetraiodophthalic anhydride, potassium tetraiodophthalimide, tetraiodophthalimide and N-d-tetraiodophthalimide.The observed bands of C6I4(CO)2X, where X = O, N-, NH and ND, were tentatively assigned in comparison with those of C6H4(CO)2X, C6Cl4(CO)2X and C6Br4(CO)2X, on the basis of C2ν molecular symmetries.A normal coordinate analysis was carried out to confirm the vibrational assignment and obtain the force constants on an assumption of the valence force field.
- HASE, Y.
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- Synthesis and Fluorescent Properties of Tetra-Biphenyl N-Substituted Phthalimides
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A series of tetra(biphenyl-4-yl)phthalimide (TBPPI) derivatives with different N-substituents (n-butyl, phenyl, p-methyl phenyl, and p-acetyl phenyl moieties for compounds 7–10, respectively) were prepared to examine their fluorescent behavior under various conditions. The chemical structure of compound 7 has been successfully confirmed by single crystal X-ray diffraction analysis. The photoluminescence (PL) spectra in different ratios of CH2Cl2/EtOH mixture solutions revealed that compounds 7 and 8 exhibited both aggregation-induced emission (AIE) and aggregation-caused quenching (ACQ) behaviors, while compounds 9 and 10 displayed AIE and aggregation-induced emission enhancement (AIEE) properties, respectively.
- Huang, Sheng-Han,Shih, Yu-Wei,Lin, Yan-Liang,Yang, Te-Fang
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- Divinyl compounds and chromogenic recording-material prepared by using thereof
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Disclosed herein are novel divinyl compounds represented by the formula (I): STR1 and a recording-material prepared by utilizing the divinyl compounds. The present divinyl compound is in itself almost colorless, extremely stable in the atmosphere and develops rapidly blakish color by a developer. The color image given by the present divinyl compound is excellect in light-resistance and moisture-resistance and the letters developed can be read by an optical letter-reading apparatus or a barcord reading apparatus.
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- Direct Aromatic Periodination
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Periodic acid and iodine in concentrated sulfuric acid exhaustively iodinated unactivated aromatic substrates.Thus benzene, nitrobenzene, benzoic acid, chlorobenzene, phthalic anhydride, and toluene were all converted to their periodo derivatives.Benzonitrile was converted to pentaiodobenzamide.This direct method compared favorably with the only general periodination procedure available, a mercuration/iododemercuration sequence.Partially iodinated products were obtained under less vigorous conditions.Thus, triiodo derivatives were obtained from nitrobenzene, benzo-ic acid, and toluene; tetraiodo derivatives were obtained from benzene, chlorobenzene, and trifluorobenzene.
- Mattern, Daniell Lewis
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p. 3051 - 3053
(2007/10/02)
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