Re2Cl4(PMe3)4 (2.247(1) Å). The molecular and electronic structure of Re2X4(PMe3)4 (X = Cl, Br) were studied by multiconfigurational quantum chemical methods. The computed ground-state geometry is in excellent agreement with the experimental structure determined by SCXRD. The calculated total bond order (2.75) is consistent with the presence of an electron-rich triple bond and is similar to the one found
双核rh (II)络合物Re 2 Br 4(PMe 3)4是在PMe 3在
丙醇中的存在下,用(n -Bu 4 N)BH 4还原[Re 2 Br 8 ] 2-制备的。该复合物的特征在于单晶X射线衍射(SCXRD)和紫外可见光谱。它在单斜C 2 / c空间群中结晶,并且与其
钼和tech类似物呈同构结构。Re-Re距离(2.2521(3)Å)稍长于Re 2 Cl 4(PMe)中的距离3)4(2.247(1)Å)。通过多构型量子
化学方法研究了Re 2 X 4(PMe 3)4(X = Cl,Br)的分子和电子结构。计算出的基态几何形状与SCXRD确定的实验结构高度吻合。计算出的总键序(2.75)与存在富电子的三键一致,并且与Re 2 Cl 4(PMe 3)4的键相似。Re 2 Br 4(PMe 3)4的电子吸收光谱记录在苯中,并显示出一系列低强度带,范围在10000至26000 cm -1之间。根据