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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structure of 4-formyl­pyridine semicarbazone hemihydrate
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Crystal structure of 4-formyl­pyridine semicarbazone hemihydrate

机译:4-甲酰基吡啶半脲半水合物的晶体结构

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The mol­ecule of the title compound C7H8N4O·0.5H2O, alternatively called (E)-1-(pyridin-4-yl­methyl­ene)semi­carb­azide hemihydrate, is in the E conformation and is almost planar; the r.m.s. deviation of the positions of the atoms of the pyridine ring from the best-fit plane is 0.0039 Å. The C, N and O atoms of the rest of the mol­ecule sits close on this plane with a largest deviation of 0.115 (4) Å for the O atom of the semicarbazone moiety. There is an intra­molecular N—H⋯N hydrogen bond. In the crystal, mol­ecules are linked into an infinite three-dimensional network by classical N—H⋯Os (s = semicarbazone) and Ow—H⋯N (w = water) hydrogen bonds.
机译:标题化合物C7H8N4O·0.5H2O的分子,也称为(E)-1-(吡啶-4-基亚甲基)氨基脲半水合物,呈E构型且几乎为平面; r.m.s.吡啶环原子位置与最佳拟合平面的偏差为0.0039Å。分子其余部分的C,N和O原子紧靠该平面,半碳zone部分的O原子最大偏差为0.115(4)Å。分子内有一个NHN氢键。在晶体中,分子通过经典的N-H⋯Os(s =氨基脲)和Ow-H⋯N(w =水)氢键连接成无限三维网络。

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