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Dynamic and static behavior of the E-E bonds (E, E ' = S and Se) in cystine and derivatives, elucidated by AIM dual functional analysis

机译:通过AIM双功能分析阐明了胱氨酸及其衍生物中E-E键(E,E'= S和Se)的动态和静态行为

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Atoms-in-molecules dual functional analysis (AIM-DFA) is applied to the E-E' bonds (E, E' = S and Se) in R-cystine (1) and the derivatives of 1, together with MeEE'Me. H-b(r(c)) are plotted versus H-b(r(c)) = V-b(r(c))/2 at bond critical points (BCPs), where H-b(r(c)) = V-b(r(c))/2 = (h(2)/8m)del(2) rho(b)(r(c)). The plots are analyzed by the polar coordinate (R, theta) representation. Data of perturbed structures around the fully optimized structures are also plotted in this treatment. Perturbed structures are generated using NIV (normal coordinates of internal vibrations). Each plot for an interaction with data of a fully optimized and four perturbed structures gives a curve, which supplies important information. It is expressed by (theta(p), k(p)): theta(p) corresponds to the tangent line for the plot measured from the y-direction and k(p) is the curvature. While (R, theta) correspond to the static nature of interactions, (theta(p), k(p)) represent the dynamic nature. The behavior of the E-E' bonds is well described by (R, theta) and (theta(p), k(p)).
机译:分子内双功能分析(AIM-DFA)适用于R-胱氨酸(1)及其衍生物1的E-E'键(E,E'= S和Se)以及MeEE'Me。在键临界点(BCP)处绘制Hb(r(c))与Hb(r(c))= Vb(r(c))/ 2的关系,其中Hb(r(c))= Vb(r(c) )/ 2 =(h(2)/ 8m)del(2)rho(b)(r(c))。通过极坐标(R,theta)表示法分析这些图。在此处理中,还会绘制出完全优化结构周围的扰动结构数据。扰动的结构是使用NIV(内部振动的法线坐标)生成的。与完全优化和四个扰动结构的数据进行交互的每个图都给出了一条曲线,该曲线提供了重要的信息。用(theta(p),k(p))表示:theta(p)对应于从y方向测量的图的切线,k(p)是曲率。 (R,theta)表示互动的静态性质,而(theta(p),k(p))表示动态性质。 E-E'键的行为由(R,theta)和(theta(p),k(p))很好地描述。

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