一、α-菱形硼的结构对于单质硼的结构,在目前的无机化学教材中,有些避而不谈,有些虽有提及,但语焉而不详。本节将对α-菱形硼的结构,作一概述。 1、正二十面体间的结合α-菱形硼可看作由B_(12)单位按立方最密堆积而形成。B_(12)单位是由12个硼原子形成的正二十面体,其表面有二十个正三角形,如图1所示。一个正二十面体与周围12个正二十面体相 First, the structure of the α-rhombohedral boron For the structure of elemental boron, some of the current inorganic chemistry textbooks, to avoid mentioning, although some are mentioned, but the language is unknown. This section will outline the structure of α-rhombohedral boron. 1, is icosahedral combination of α-rhombohedral boron can be seen as the B_ (12) units by the most compact cubic accumulation formed. The B_ (12) unit is a regular icosahedron made up of 12 boron atoms and has twenty regular triangles on its surface, as shown in Figure 1. A regular icosahedron is surrounded by 12 regular icosahedrons