Rhombohedral boron subnitride, B13N2, by X-ray powder diffraction
Rhombohedral boron subnitride, B13N2, by X-ray powder diffraction
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DOI：
10.1107/s0108270107037353
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发表时间：
2007-09-01
影响因子：
0.8
通讯作者：
Solozhenko, Vladimir L.
中科院分区：
文献类型：
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作者：
Kurakevych, Oleksandr O.;Solozhenko, Vladimir L.
标题化合物的结构是由N-B-N链连接的扭曲的B-12二十面体组成的。该化合物在酵母(编号166)上以菱面体空间群R(3)的形式结晶。该晶胞包含四个与对称性无关的原子位置，其中三个由B[在18h，18h(位置对称性m)和3b(位置对称性(3)在barm上)Wyackoff位置]占据，一个由N(在6c Wyackoff位置，位置对称性3m)占据。两个B原子形成二十面体，而N原子将二十面体连接在一起。该结构的主要特征是3b位置被B原子占据，这使得该结构不同于B6O和B4+xc1-x的结构，对于B6O，这些原子位置是空的，对于B4+xc1-x，这个位置是由B和C原子随机占据的。
The structure of the title compound consists of distorted B-12 icosahedra linked by N - B - N chains. The compound crystallizes in the rhombohedral space group R (3) over barm ( No. 166). The unit cell contains four symmetry-independent atom sites, three of which are occupied by boron [ in the 18h, 18h ( site symmetry m) and 3b ( site symmetry (3) over barm) Wyckoff positions] and one by nitrogen ( in the 6c Wyckoff position, site symmetry 3m). Two of the B atoms form the icosahedra, while N atoms link the icosahedra together. The main feature of the structure is that the 3b position is occupied by the B atom, which makes the structure different from those of B6O, for which these atom sites are vacant, and B4+xC1-x, for which this position is randomly occupied by both B and C atoms.