| GUI: Olex2[1] Structure refinement: SHELXL[2] |
案例来源:J. Mol. Struct. 2024, 1310, 138267. DOI: 10.1016/j.molstruc.2024.138267. 前段时间,有友友求助如图1所示问题。 ▲图1 问题诉求 | | Reviewer #1: I have gone through the revised manuscript and of the opinion that the authors have made significant effort in revising the manuscript. The paper has been revised almost as desired. However, there are certain issues - two issues in particular, that I stress the authors to consider it again before acceptance. Hence, I recommend for major revision. 1. The crystal structures must be refined to an acceptable level. Remove alerts as much as possible. Thermal ellipsoids of some atoms look elongated owing to unresolved disorder. Presenting precise molecular and crystal structural data is important. 2. Presenting X-ray refinement details is mandatory for consistency and reproducibility. | 审稿人#1:我已经看过修改后的手稿,认为作者在修改手稿方面做出了重大努力。这篇论文几乎按要求进行了修改。然而,有一些问题,特别是两个问题,我强调作者在接受之前要再次考虑。因此,我建议进行重大修订。 1. 晶体结构必须精修到可接受的水平。尽可能删除警报。一些原子的热椭球体由于未解决的无序而看起来很细长。提供精确的分子和晶体结构数据非常重要。 2. 为了一致性和再现性,必须提供X射线精修细节。 |
查看该数据结构,可以看到,游离的乙醇做了二组分无序,但其原子椭球形变依然非常严重,如图2所示。 ▲图2 椭球异常的乙醇分子 随后对其做了三组分无序处理,如图3所示,对其键长键角和各向异性位移参数做了限制,目前原子椭球较为正常。 ▲图3 三组分无序处理的乙醇分子 视频操作演示请参阅: 晶体数据审稿意见-乙醇三组分无序:https://www.bilibili.com/video/BV1mE421N7Fd | [1] Dolomanov, O. V.; Bourhis, L. J.; Gildea, R. J.; Howard, J. A. K.; Puschmann, H. OLEX2: A Complete Structure Solution, Refinement and Analysis Program. J. Appl. Cryst. 2009, 42, 339–341. DOI: 10.1107/S0021889808042726. [2] (a) Sheldrick, G. M. SHELXL-2019/3, Program for Crystal Structure Refinement, University of Göttingen, Germany, 2019. (b) Sheldrick, G. M. A Short History of SHELX. Acta Cryst. 2008, A64, 112–122. DOI: 10.1107/S0108767307043930. (c) Sheldrick, G. M. Crystal Structure Refinement with SHELXL. Acta Cryst. 2015, C71, 3–8. DOI: 10.1107/S2053229614024218. (d) Lübben, J.; Wandtke, C. M.; Hübschle, C. B.; Ruf, M.; Sheldrick, G. M.; Dittrich, B. Aspherical scattering factors for SHELXL – model, implementation and application. Acta Cryst. 2019, A75, 50–62. DOI: 10.1107/S2053273318013840. |
声明:本文仅代表个人观点,笔者学识有限,资料整理过程中可能存在疏漏错误,请不吝指正。 |
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