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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Ab Initio Anharmonic Force Field and Rotational Analyses of Infrared Bands of Perchloryl Fluoride
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Ab Initio Anharmonic Force Field and Rotational Analyses of Infrared Bands of Perchloryl Fluoride

机译:高氯酰氟红外光谱的从头算非谐力场和旋转分析

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摘要

Perchloryl fluoride,FClO3,has been studied both experimentally and theoretically,using high-resolution Fourier transform spectroscopy and high-level ab initio methods.The geometry,dipole moment,and anharmonic force field of the molecule have been calculated ab initio,using the coupled-cluster with single,double,and perturbative triple excitations[CCSD(T)]level of theory.The infrared spectra of monoisotopic species have been recorded.The v1+v2 bands of F~(35)Cl~(16)O3,F~(37)Cl~(16)O3,F~(35)Cl~(18)O3,and F~(37)Cl~(18)O3,the v2+v3 and v2+v3-v3 bands of F~(35)Cl~(16)O3 and F~(37)Cl~(16)O3,and the 2v3-v3 band of F~(37)Cl~(16)O3 have been analyzed.The spectroscopic parameters obtained from these and from previous analyses have been compared with the theoretical results.
机译:使用高分辨率傅里叶变换光谱和高级从头算方法对全氯氟化合物FClO3进行了实验和理论研究。从头算,通过耦合计算了分子的几何构型,偶极矩和非谐力场单扰动,双扰动和三重激发的簇[CCSD(T)]的理论水平。记录了单同位素物种的红外光谱。F〜(35)Cl〜(16)O3,F的v1 + v2谱带〜(37)Cl〜(16)O3,F〜(35)Cl〜(18)O3和F〜(37)Cl〜(18)O3,F〜的v2 + v3和v2 + v3-v3谱带分析了(35)Cl〜(16)O3和F〜(37)Cl〜(16)O3以及F〜(37)Cl〜(16)O3的2v3-v3谱带,并从中获得了光谱参数并根据以前的分析与理论结果进行了比较。

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