...
首页> 外文期刊>Physical chemistry chemical physics: PCCP >The quasi-unchanged gas-phase molecular structures of the atmospheric aerosol precursor beta-pinene and its oxidation product nopinone
【24h】

The quasi-unchanged gas-phase molecular structures of the atmospheric aerosol precursor beta-pinene and its oxidation product nopinone

机译:大气气溶胶前体β-Pine烯的准不变气相分子结构及其氧化产物Nopinone

获取原文
获取原文并翻译 | 示例
           

摘要

The rotational spectra of the two bicyclic molecules beta-pinene and its oxidation product nopinone were investigated in the gas phase, using Fourier transform microwave spectroscopy coupled to a supersonic jet, in the 2-20 GHz range. The parent species and all heavy atom isotopologues have been observed in their natural abundance. The spectroscopic parameters of the ground states were determined from a Watson's Hamiltonian in the A reduction. The rotational constants were used together with geometrical parameters obtained from ab initio calculations to determine the r(0) and r(m)((1)) structures of the skeletons, without any structural assumption in the fit concerning the heavy atoms. Comparison with solid phase and other bicyclic monoterpenes unveiled an unprecedented complete set of geometrical parameters for the rigid cages. The structures of beta-pinene and nopinone are very close, except for the substituents at C-2. In the gas phase C-2 is a centre of planarity in both molecules.
机译:在20GHz范围内,在气相中研究了两种双环分子β-凸烯及其氧化产物Nopinone的旋转光谱,在气相中,在2-20GHz范围内。 在自然丰富中观察到母体物种和所有重原子同位素。 地面态的光谱参数是从沃森的汉密尔顿人中的减少中确定的。 旋转常数与从AB初始计算获得的几何参数一起使用,以确定骨骼的R(0)和R((1))结构,而没有关于重原子的拟合的任何结构假设。 与固相和其他双环单波通的比较推出了刚性笼的前所未有的完整的几何参数集。 除了C-2的取代基外,β-脊烯和龙诺酮的结构非常接近。 在气相中,C-2是两种分子中的平坦性的中心。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号