| 書目名稱 | Organic Crystals I: Characterization | | 編輯 | N. Karl | | 視頻video | http://file.papertrans.cn/704/703811/703811.mp4 | | 叢書名稱 | Crystals | | 圖書封面 |  | | 描述 | Lattice defects of organic molecular crystals affect their optical or electrical properties by changing the local energy structure. Lattice defects also playa very important role in the chemical and physical properties, for example, as an active site of a catalyst or an initiating point of a solid state reaction. However, very little has been reported on the defect structure of real organic crystals. In the past ten years it became clear that the origin and the structure of the defects depend on the geometrical and chemical nature of the building units of the crystal, the molecules. Molecular size, form and anisotropy, charge distribution, etc. cause the characteristic structure of the defect. Accordingly, a defect structure found in one compound may not be found in others. The defect structure of an organic crystal cannot be defined solely by the displacement of the molecular center from the normal lattice site. A rotational displacement of a molecule is frequently accompanied by a parallel shift of the molecular center. In addition to the usual geometrical crystallographic defects, chemical defects are important too which originate, for example, from differences in the substituti | | 出版日期 | Conference proceedings 1991 | | 關(guān)鍵詞 | Kristallchemie; Kristallstrukturanalyse; Substitution; catalyst; chemistry; crystal; crystal structure; cry | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-642-76253-6 | | isbn_softcover | 978-3-642-76255-0 | | isbn_ebook | 978-3-642-76253-6Series ISSN 0172-5076 | | issn_series | 0172-5076 | | copyright | Springer-Verlag Berlin Heidelberg 1991 |
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