|
没必要消除的B级警报PLAT410案例1 案例来源：CCDC[1] 2283671, 2410254. Inorg. Chem. 2024, 63, 9539‒9551. DOI[2]:10.1021/acs.inorgchem.3c04079. 案例结构为如图1所示（由ChemBioDraw[3]绘制）。
▲图1 案例结构 该结构解析精修完成后，如图2所示（由Olex2[4]呈现，验证报告由PLATON[5]呈现），有一个B级警报PLAT410（参阅推文“CheckCIF-PLAT410”）。
▲图2 案例结构结果 B级警报PLAT410中所述H40B和H50A分别是β-二亚胺配体上1-位取代基苄基的亚甲基氢（H40B）和2-位取代三甲基硅基亚甲基的氢（H50A），如图2所示，两者之间因为距离小于2.1 Å而触发了B级警报PLAT410，这两个取代基原子椭球正常，并无明显无序存在，因此没必要做无序处理尝试消除该警报（不要为了消除警报而做多余处理，键长键角以及结构的合理性才是重要的），这个就是因为β-二亚胺配体和金属配位使得该配体构型固定，以及晶体结构中分子排列、空间位阻等原因使得两个亚甲基氢相对靠近，从而触发了该警报。
▲图3 触发B级警报PLAT410的结构片段
▲图4 对B级警报PLAT410的解释说明 CIF中配体填的是“β-diketiminato”，如图5所示，不过checkCIF系统不识别希腊字母，因此上图中变成了“-diketiminato”，这没关系，只要CIF中内容正确即可，读者最终还是要打开CIF查看具体内容的。
▲图5 CIF中的验证答复表 视频讲解请参阅： 没必要消除的B级警报PLAT410案例1：https://www.bilibili.com/video/BV1NcCuYjE5o 相关视频： 单晶结构解析练习366(数据还原-文献案例-无序处理)：https://www.bilibili.com/video/BV1YNkiYeEFn 单晶结构解析练习367(数据还原-文献案例-无序处理)：https://www.bilibili.com/video/BV1NfCMYmEr3 参考文献 [1] (a) Allen, F. H. The Cambridge StructuralDatabase: A Quarter of a Million Crystal Structures and Rising. Acta Cryst. 2002, B58, 380–388. DOI: 10.1107/S0108768102003890. (b) Groom, C. R.;Bruno, I. J.; Lightfoot, M. P.; Ward, S. C. The Cambridge Structural Database. Acta Cryst. 2016, B72, 171–179. DOI: 10.1107/S2052520616003954. (c) Mitchell, J.;Robertson, J. H.; Raithby, P. R. Cambridge Crystallographic Data Centre (CCDC).Comprehensive Coordination Chemistry III2021, 413–437. DOI: 10.1016/B978-0-12-409547-2.14829-2. [2] (a) International Organization forStandardization (2012). ISO 26324:2012. Informationand Documentation – Digital Object Identifier System. http://www.iso.org/iso/catalogue_detail.htm?csnumber=43506. (b) McDonald J. D.;Levine-Clark, M. Encyclopedia of Libraryand Information Sciences. Fourth Edition, CRC Press, 2017. DOI: 10.1081/e-elis4. (c) Liu, J. Digital ObjectIdentifier (DOI) and DOI Services: An Overview. Libri 2021, 71, 349‒360. DOI:10.1515/libri-2020-0018. (d) International Organization for Standardization(2022). ISO 26324:2022. Information andDocumentation – Digital Object Identifier System. https://www.iso.org/standard/81599.html[3] (a) Klein, F. M. CS ChemDraw Pro,1 Version3.1 for Windows. J. Chem. Inf. Comput. Sci. 1995, 35, 166–167. DOI: 10.1021/ci00023a026. (b)Cousins, K. R. ChemDraw 6.0 Ultra CambridgeSoft Corporation, 100 Cambridge ParkDrive, Cambridge, MA 02140. http://www.camsoft.com. Commercial Price: $1395.Academic Price: $699. J. Am. Chem. Soc. 2000, 122, 10257–10258. DOI: 10.1021/ja0047572.(c) Buntrock, R. E. ChemOffice Ultra 7.0. J. Chem. Inf. Comput. Sci. 2002, 42, 1505–1506. DOI: 10.1021/ci025575p. (d) Li, Z.; Wan, H.; Shi, Y.;Ouyang, P. Personal Experience with Four Kinds of Chemical Structure DrawingSoftware: Review on ChemDraw, ChemWindow, ISIS/Draw, and ChemSketch. J. Chem. Inf. Comput. Sci. 2004, 44, 1886–1890. DOI: 10.1021/ci049794h.(e) Mendelsohn, L. D. ChemDraw8 Ultra, Windows and Macintosh Versions. J. Chem. Inf. Comput. Sci. 2004, 44, 2225–2226. DOI: 10.1021/ci040123t. (f) Cousins, K. R. ChemDrawUltra 9.0. CambridgeSoft, 100 CambridgePark Drive, Cambridge, MA 02140. www.cambridgesoft.com. See Web site for pricing options. J. Am. Chem. Soc. 2005, 127, 4115–4116. DOI:10.1021/ja0410237. (g) Zielesny, A. Chemistry Software PackageChemOffice Ultra 2005. J. Chem. Inf.Model. 2005, 45, 1474–1477. DOI:10.1021/ci050273j. (h) Mills, N. ChemDraw Ultra 10.0 CambridgeSoft, 100CambridgePark Drive, Cambridge, MA 02140. www.cambridgesoft.com. CommercialPrice: $1910 for download, $2150 for CD-ROM; Academic Price: $710 fordownload, $800 for CD-ROM. J. Am. Chem. Soc. 2006, 128, 13649–13650. DOI: 10.1021/ja0697875. (i) Kerwin, S. M.ChemBioOffice Ultra 2010 Suite. J. Am. Chem. Soc. 2010, 132, 2466–2467. DOI: 10.1021/ja1005306. (j) Milne, G. W. A. SoftwareReview of ChemBioDraw 12.0. J. Chem. Inf.Model. 2010, 50, 2053. DOI:10.1021/ci100385n. (k) Narayanaswamy, V. K.; Rissdörfer, M.; Odhav, B.Review on CambridgeSoft ChemBioDraw Ultra 13.0v. Int. J. Theor. Appl. Sci. 2013, 5, 43–49. [4] 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. [5] (a) Spek, A. L. Single-Crystal Structure Validation with theProgram PLATON. J. Appl. Cryst. 2003, 36, 7–13. DOI: 10.1107/S0021889802022112. (b) Spek, A. L. StructureValidation in Chemical Crystallography. ActaCryst. 2009, D65, 148–155. DOI:10.1107/S090744490804362X. (c) Spek, A. L. What Makes a Crystal Structure Report Valid? Inorg. Chim. Acta 2018, 470, 232–237. DOI:10.1016/j.ica.2017.04.036. (d) Spek, A. L. checkCIFValidation ALERTS: What They Mean and How to Respond. Acta Cryst. 2020, E76, 1–11. DOI: 10.1107/S2056989019016244. [6] (a) Hall, S. R.; Allen, F. H. Brown, I. D.The Crystallographic Information File (CIF): A New Standard Archive File forCrystallography. Acta Cryst. 1991, A47, 655–685. DOI:10.1107/S010876739101067X. (b) Hall, S. R. The STAR File: A New Formatfor Electronic Data Transfer and Archiving. J.Chem. Inf. Comput. Sci. 1991, 31, 326–333. DOI:10.1021/ci00002a020. (c) Hall, S. R.; Spadaccini, N. The STAR File:Detailed Specifications. J. Chem. Inf.Comput. Sci. 1994, 34, 505–508. DOI:10.1021/ci00019a005. 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。 如需PDF文档，请从以下链接下载： 通过网盘分享的文件：没必要消除的B级警报PLAT410案例1.pdf
| 
发表于 2025-6-16 07:11:24
