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1951年希伯格(Heaberg)和休梅克(Schomaker)用电子衍射研究肯定了 B_2H_6桥式构型,并测得键长与键角如图1所示:同时,由光潜、核磁共振等实验及 B_2He 的物理化学性质,对 B_2H_6的几何构型都得到同一结果。此分子的两个硼原子和两侧的四个氢原子(H_α、H_β、H_γ、H_δ)在同一平面上(定为 xy 平面),B—H 有着正常单键的距离;另外两个氢原子分别位于此平面的上方及下方,H—B 的距离比正常单键长。
In 1951, Heaberg and Schomaker affirmed the B_2H_6 bridged structure by electron diffraction and measured the bond length and bond angle as shown in Figure 1. At the same time, Experiments and physicochemical properties of B 2 He gave the same results for the geometry of B 2 H 6. The two boron atoms and two hydrogen atoms (H_α, H_β, H_γ and H_δ) on the same plane (defined as the xy plane) are two boron atoms in the molecule. B-H has a normal single bond distance. The other two hydrogen atoms Located above and below this plane, respectively, H-B is longer than normal single bond.