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您的检索式：作者名="SEPIDEH Samiee"
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| 1 | Synthesis and Structural Characterization of Organophosphorus Ylide-1-(3-nitrophenyl)-2-(triphenyl phosphoranylidene)ethanone显示文摘The title compound Ph3P=C(H)C(O)PhNO2(L) has been prepared by the addition of triphenylphosphine in acetone as solvent to 2-bromo-1-(3-nitrophenyl)ethanone followed by the addition of alkaline solution of sodium hydroxide. The yellow crystals of the title ylide were grown in methanol/chloroform solution by drop method without stirring at room temperature. The solid state structure of ylide has been established by X-ray crystallography analysis. In the molecule of the title compound, the geometry around the P atom is nearly tetrahedral and the O atom is in synperiplanar orientation to the P atom. The nitrophenyl ring is twisted with respect to the plane of the carbonyl group through an angle of 36.6(1)°. The crystal(C26H20NO3P, Mr = 425.40) belongs to the monoclinic system, space group P21/n with a = 10.889(3), b = 14.467(3), c = 13.872(4) , β = 103.08(3)°, V = 2128.6(10) 3, Z = 4, T = 100(2) K, R = 0.059 and w R = 0.163 for 3984 observed reflections with Ⅰ >2σ(Ⅰ). | ALIREZA Dadrass ALI Ramazani AHMAD Poursattar Marjani HOJJATOLLAH Rahchamani HASSAN Nasri Koureh ALI Souldozi SEPIDEH Samiee KATARZYNA lepokura TADEUSZ Lis | 2015 | Chinese Journal of Structural Chemistry2015，34，3： | 1 |
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