Unusual asymmetry in halobenzenes, a solid-state, gas-phase and theoretical investigation

Unusual asymmetry in halobenzenes, a solid-state, gas-phase and theoretical investigation
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卤代苯异常的不对称性、固态、气相和理论研究

DOI:
10.1007/s11224-010-9700-0
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发表时间:
2010
影响因子:
1.7
通讯作者:
Masters S
Masters S
中科院分区:
化学4区
文献类型:
--
作者:
Masters S

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使用气体电子衍射(GED)和从头计算方法在气相中研究了 1-Br-4-F-C6H4 和 1-Cl-4-F-C6H4 的分子结构。还研究了结晶相中的1-Cl,4-F-C6H4的结构,但是虽然发现气态结构具有C2v对称性,但发现固态结构相当扭曲,不对称单元中有三个分子。这些碎片仅在分子平面中具有 Cs 对称性,这与在气相中观察到的 C2v 对称性相反。固态结构内的键合基序非常不寻常且出乎意料,三个部分的 C-F 键长完全不同,并且是结构内弱氢-卤素相互作用的结果。
The molecular structures of 1-Br-4-F-C6H4and 1-Cl-4-F-C6H4have been studied in the gas phase using gas electron diffraction (GED) and ab initio methods. The structure of 1-Cl,4-F-C6H4in the crystalline phase has also been studied, but whilst the gaseous structures were found to possessC2vsymmetry, the solid-state structure was found to be quite distorted, with three molecules in the asymmetric unit. These fragments only possessCssymmetry in the plane of the molecules, as opposed to theC2vsymmetry observed in the gas phase. The bonding motifs within the solid-state structure are very unusual and unexpected, with quite different C–F bond lengths for the three moieties, and are a result of weak hydrogen-halogen interactions within the structure.
DOI: 10.1107/s0021889886089835
发表时间: 1986-04-01
影响因子: 6.1
作者:
COSIER, J;GLAZER, AM
通讯作者: GLAZER, AM
DOI: 10.1021/jp073581o
发表时间: 2007
期刊: The journal of physical chemistry. A
影响因子: --
作者:
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通讯作者: D. Rankin
由分子内部运动引起的局部离心畸变
DOI: 10.1016/s0022-2860(01)00534-8
发表时间: 2001
影响因子: 3.8
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通讯作者: V. A. Sipachev
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