首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Ab initio coupled cluster determination of the equilibrium structures of cis - And trans -1,2-difluoroethylene and 1,1-difluoroethylene
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Ab initio coupled cluster determination of the equilibrium structures of cis - And trans -1,2-difluoroethylene and 1,1-difluoroethylene

机译:从头算耦合簇确定顺式和反式-1,2-二氟乙烯和1,1-二氟乙烯的平衡结构

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摘要

The equilibrium structures of cis- and trans-1,2-difluoroethylene and 1,1-difluoroethylene, C_2H_2F_2, have been determined with high-level coupled cluster techniques combined with large basis sets, explicit consideration of core/valence, and scalar relativistic and higher order correlation effects. Excellent agreement was found with new semiexperimental structures, increasing the level of confidence in both approaches. Differences in bond lengths among ethylene and the fluoroethylenes are discussed.
机译:顺式和反式1,2-二氟乙烯和1,1-二氟乙烯C_2H_2F_2的平衡结构已通过高耦合簇技术,大基集,显式考虑核/价,标量相对论和高阶相关效应。人们发现新的半实验结构获得了很好的共识,从而提高了这两种方法的置信度。讨论了乙烯和氟乙烯之间键长的差异。

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