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Theoretical study of the influence of solvent polarity on the 31P and 13C NMR parameters of the Ru(PH3)4(η2-benzyne) complex
Inorganic Chemistry Communications ( IF 3.8 ) Pub Date : 2020-12-21 , DOI: 10.1016/j.inoche.2020.108412
Reza Ghiasi , Zohreh Zandiyeh

In this study, using the wB97XD method, quantum chemical calculations were used to analyze the effect of solvent on 31P and 13C NMR parameters of the Ru(PH3)42-benzyne) complex. The solvent effects were examined using the self-consistent reaction field theory (SCRF) based on the Polarizable Continuum Model (PCM). The stability of this complex was studied in the singlet and triplet states. The 31P and 13C NMR chemical shifts of the complex were calculated for both gas and solution phases. One-bond nuclear spin–spin coupling constants of Rhsingle bondC and Rusingle bondP bonds as well as two-bond nuclear spin–spin coupling constants of P⋯P were estimated. The correlations of these parameters and solvent polarity functions including both the dielectric constant (ε) and refractive index (nD) of the liquid medium were explored further. In addition, the most significant Ramsey terms involved significantly in 1J(Rusingle bondP), 1J(Rusingle bondC) and 2J(P⋯P) values were determined. Finally, the correlations between 1J(Rusingle bondP), 1J(Rusingle bondC) and the APT net charge on the Ru atom were studied.



中文翻译:

溶剂极性的对的影响的理论研究31 P和13个C NMR的参数的Ru(PH 34(η 2 -benzyne)复合物

在这项研究中,使用wB97XD方法,量子化学计算来分析上的溶剂的影响31 P和13个在Ru的C NMR参数(PH 34(η 2 -benzyne)络合物。使用基于可极化连续体模型(PCM)的自洽反应场理论(SCRF)检查了溶剂的作用。在单重态和三重态下研究了该络合物的稳定性。计算了气相和溶液相的配合物的31 P和13 C NMR化学位移。Rh 单键C和Ru的单键核自旋-自旋耦合常数单键估计了P键以及P⋯P的两键核自旋-自旋耦合常数。进一步探讨了这些参数与溶剂极性函数的相关性,包括液体介质的介电常数(ε)和折射率(n D)。此外,确定了与1 J(Ru 单键P),1 J(Ru 单键C)和2 J(P⋯P)值显着相关的最重要的Ramsey项。最后,研究了1 J(Ru 单键P),1 J(Ru 单键C)与Ru原子上APT净电荷之间的相关性。

更新日期:2020-12-29
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