由于有机分子中σ键可以“自由”旋转，使分子中的原子或基团在空间产生不同的排列，这种特定的排列形式称为构象（conformation)。由单链旋转而产生的异构体称为构象异构体（conformation isomer)或旋转异构体（rotamer)。
它们叫做构象异构体，也叫做异象体。
They are said to be conformational isomers also called conformers.
用量子化学从头计算法研究了HCN、HNC分子与H原子和电子加成生成的H_2CN自由基异构体的最低总能量构象和净电荷分布。
Using ab initio method, the minimum energy conformations and netcharge distribution have been studied for H_2CN radical isomers formed by addition ofa H atom (or an electron) to HCN (or HNC) molecule.
聚合物刷子的奇异构象使其具有许多新奇的性质和潜在的应用前景。
This process also enables the preparation of a wide range of polymer brushes where(co)polymers are covalently attached to either curved or flat surfaces.
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