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首页> 外文期刊>Journal of chemical crystallography >Syntheses, Crystal Structures and Antimicrobial Studies of Two New Semicarbazone Derivatives
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Syntheses, Crystal Structures and Antimicrobial Studies of Two New Semicarbazone Derivatives

机译：两种新型半脲类衍生物的合成，晶体结构和抗菌研究

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Two new derivatives of semicarbazone, (E)-2-(hexan-2-ylidene)hydrazinecarboxamide and (E)-2-(heptan-2-ylidene)hydrazinecarboxamide were synthesized and characterized by IR and ~1H NMR. Their crystal structures were characterized by X-ray diffraction method. Compound (I) crystallizes in triclinic P&1-bar;, a = 6.7679(7) ?, b = 7.1912(8) ?, c = 9.9969(11) ?, α = 108.824(2)°, β = 99.398(3)°, γ = 92.680(2)°, V = 451.75(8) ?~3, Z = 2, R_1 = 0.043 and wR_2 = 0.140. Compound (II) crystallizes in triclinic P&1-bar;, a = 6.7192(6) ?, b = 7.2094(6) ?, c = 11.2842(11) ?, α = 103.303(2)°, β = 106.198(2)°, γ = 91.219(1)°, V = 508.70(8) ?~3, Z = 2, R_1 = 0.044 and wR_2 = 0.133. Their molecules adopt a L-shape conformation with C atom in C=N double bond acting as the junction point. The C=O double bond indicate the existence of semicarbazone group in keto-like form for both compounds in their solid state. In the crystal, the carbonyl O atom for both derivatives acts as a common acceptor in the intermolecular bifurcated N-H...O hydrogen bonding which linked the molecules into one-dimensional supramolecular ribbons. Antimicrobial studies by serial dilution method showed both compounds exhibit antibacterial property.
机译：合成了两种氨基脲的新衍生物，（E）-2-（己-2-亚基）肼基甲酰胺和（E）-2-（庚-2-亚基）肼基甲酰胺，并通过IR和〜1H NMR进行了表征。它们的晶体结构通过X射线衍射法表征。化合物（I）以三斜晶P＆1-bar结晶; a = 6.7679（7）α，b = 7.1912（8）α，c = 9.9969（11）α，α= 108.824（2）°，β= 99.398（3） °，γ＝ 92.680（2）°，V ＝ 451.75（8）〜3，Z ＝ 2，R_1 ＝ 0.043，wR_2 ＝ 0.140。化合物（II）以三斜晶P＆1-bar结晶; a = 6.7192（6）α，b = 7.2094（6）α，c = 11.2842（11）α，α= 103.303（2）°，β= 106.198（2） °，γ＝ 91.219（1）°，V ＝ 508.70（8）≤3，Z ＝ 2，R_1 ＝ 0.044，wR_2 ＝ 0.133。它们的分子采用C原子为C = N的C原子为连接点的L形构象。 C ＝ O双键表明两种化合物在固态时都存在酮样形式的氨基脲基。在晶体中，两种衍生物的羰基O原子在分子间分叉的N-H ... O氢键中充当共同的受体，氢键将分子连接成一维超分子带。通过系列稀释法进行的抗菌研究表明，两种化合物均具有抗菌性能。

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