Frequency of Z' values in organic and organometallic crystal structures.

Frequency of Z' values in organic and organometallic crystal structures.
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有机和有机金属晶体结构中 Z 值的频率。

DOI:
10.1107/s0108768100002652
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发表时间:
2000
期刊:
Acta crystallographica. Section B, Structural science
影响因子:
--
通讯作者:
T. Steiner
T. Steiner
中科院分区:
--
文献类型:
--
作者:
T. Steiner

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使用剑桥结构数据库记录有机和有机金属晶体结构的Z'值的频率(每个不对称晶体单元的化学式单元)。给出了所有Z'值的绝对频率、某些物质类别的相对频率、七个晶系和最丰富的空间群。Z'值为1/2、1和2的晶体占全部晶体结构的95.3%。Z' > 1的结构最常见于核苷和核苷酸(20.8%),以及甾体(18.8%).
The frequencies of Z' values (formula units per asymmetric crystal unit) are documented for organic and organometallic crystal structures, using the Cambridge Structural Database. The absolute frequencies of all Z' values reported, relative frequencies for certain substance classes, the seven crystal systems and the most abundant space groups are given. The three Z' values 1/2, 1 and 2 make up 95.3% of all crystal structures. Structures with Z' > 1 occur most frequently with nucleosides and nucleotides (20.8%), and with steroids (18.8%).