B4 Tetrahedra for Aluminum Atoms-A Surprising Substitution in τ-Borides Ni20 Al3 B6 and Ni20 AlB14.
B4 Tetrahedra for Aluminum Atoms-A Surprising Substitution in τ-Borides Ni20 Al3 B6 and Ni20 AlB14.
复制标题
铝原子的 B4 四面体——τ-硼化物 Ni20 Al3 B6 和 Ni20 AlB14 中的令人惊讶的取代。
作者：
H. Hillebrecht;M. Ade
通过晶体中定制的配位稳定，B4四面体首次在固态结构中被表征（如图所示）。在立方τ硼化物ni20alb14中，部分Al原子被B4四面体所取代。B-B距离为1.681（15）Å，与含有四面体B4单元的B4 Cl4和B4 (tBu)4的分子结构相似。
Stabilized by the tailor-made coordination in the crystal, B4 tetrahedra were characterized for the first time in a solid-state structure (shown on the right). Some of the Al atoms are replaced by B4 tetrahedra in the cubic τ-boride Ni20 AlB14 . The B-B distances of 1.681(15) Å are similar to those in the molecular structures of B4 Cl4 and B4 (tBu)4 , which contain tetrahedral B4 units.