1-Phenyldiazenyl-8-phenylhydrazononaphthalene-7(8h)-one-2-ol: Co-existence of azo-hydroxy and hydrazo-keto forms

Das P.; Biswas A.N.

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1-Phenyldiazenyl-8-phenylhydrazononaphthalene-7(8h)-one-2-ol: Co-existence of azo-hydroxy and hydrazo-keto forms

机译：1-苯基二氮烯-8-苯基肼基萘-7（8h）-一-2-醇：偶氮-羟基和肼基-酮形式的共存

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The compound crystallizes in the triclinic Par{1} space group and unit cell dimensions of a = 8.158 ?, b = 12.490 ?, c = 17.129 ?; α = 93.24°, β = 94.72°, γ = 97.61° and Z = 4. The structure was solved by direct methods and refined to an R1 value of 0.0890 on 2,278 observed reflections. There are two molecules in the asymmetric residue unit of the compound. In the title compound C_(22)H_(16)N _4O_2, two diazene groups at C1 and C8 and two hydroxy groups at C2 and C7 bring into play a unique azo-hydrazo equilibrium in which azo-hydroxy and hydrazo-keto forms co-exist in the molecule. The hydrazone H atom and the keto O atom are linked by an intramolecular N-H???O hydrogen bond on the other hand the hydroxy H atom and the azo N atom are linked by two intramolecular O-H???N hydrogen bonds. Graphical Abstract: The synthesis and crystal structure of 1-phenyldiazenyl-8- phenylhydrazononaphthalene-7(8H)-one-2-ol (I) has been presented. In the title compound (I) hydrazo-keto form and azo-hydroxy form co-exist in the solid state.[Figure not available: see fulltext.]

机译：该化合物在三斜晶P bar {1}空间群中结晶，其晶胞尺寸为a ＝8.158Ω，b ＝12.490Ω，c ＝17.129Ω。 α= 93.24°，β= 94.72°，γ= 97.61°和Z =4。通过直接方法解析结构，并在2278次观察到的反射上将其精炼为R1值0.0890。该化合物的不对称残基单元中有两个分子。在标题化合物C_（22）H_（16）N_4O_2中，C1和C8上的两个重氮基团以及C2和C7上的两个羟基基团发挥独特的偶氮-hydr唑平衡，其中偶氮-羟基和-酮形成-存在于分子中。 HH原子和酮O原子通过分子内的N-H 2 O氢键连接，而羟基H原子和偶氮N原子通过两个分子内的O-H 12 N氢键连接。图形摘要：本文介绍了1-苯基二氮烯基-8-苯基肼基萘-7（8H）-一-2-醇（I）的合成和晶体结构。在标题化合物（I）中，肼基-酮基和偶氮基-羟基以固态共存。[图不可用：见全文]

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《Journal of chemical crystallography》 |2010年第12期|共3页
作者
Das P.; Biswas A.N.;
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正文语种 eng
中图分类晶体学;
关键词
Azo-hydrazo equilibrium; Azo-hydroxy; Crystal structure; Hydrazo-keto;

机译：偶氮hydr平衡偶氮羟基晶体结构羟基酮;

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机译：1-苯基二氮烯-8-苯基肼基萘-7（8h）-一-2-醇：偶氮-羟基和肼基-酮形式的共存
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1-Phenyldiazenyl-8-phenylhydrazononaphthalene-7(8h)-one-2-ol: Co-existence of azo-hydroxy and hydrazo-keto forms

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