{"title":"p2 和 c2 有机结构的近似对称性","authors":"Carolyn P. Brock","doi":"10.1107/s2053273323098492","DOIUrl":null,"url":null,"abstract":"The crystal packing in well - determined, organic, Z* ≥ 1 † structures in groups #3 ( P 2) and #5 ( C 2/ A 2/ I 2) has been analyzed. The study completes the survey of packing in organic structures archived in the CSD that have R ≤ 0.050 and that were reported in low - symmetry (SG# ≤ 8), low - frequency (< 5000 entries) space groups. Surveys of the structures described in P 11 and in group #7 ( Pc / Pn / Pa ) 2 have already been published. There are only 6 such structures in group #6 ( Pm ) and only 12 in #8 ( Cm ), with a number of those being either suspicious or very inorganic.","PeriodicalId":6903,"journal":{"name":"Acta Crystallographica Section A Foundations and Advances","volume":"77 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Approximate symmetry in p2 and c2 organic structures\",\"authors\":\"Carolyn P. Brock\",\"doi\":\"10.1107/s2053273323098492\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The crystal packing in well - determined, organic, Z* ≥ 1 † structures in groups #3 ( P 2) and #5 ( C 2/ A 2/ I 2) has been analyzed. The study completes the survey of packing in organic structures archived in the CSD that have R ≤ 0.050 and that were reported in low - symmetry (SG# ≤ 8), low - frequency (< 5000 entries) space groups. Surveys of the structures described in P 11 and in group #7 ( Pc / Pn / Pa ) 2 have already been published. There are only 6 such structures in group #6 ( Pm ) and only 12 in #8 ( Cm ), with a number of those being either suspicious or very inorganic.\",\"PeriodicalId\":6903,\"journal\":{\"name\":\"Acta Crystallographica Section A Foundations and Advances\",\"volume\":\"77 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-07-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Crystallographica Section A Foundations and Advances\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1107/s2053273323098492\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Crystallographica Section A Foundations and Advances","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1107/s2053273323098492","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Approximate symmetry in p2 and c2 organic structures
The crystal packing in well - determined, organic, Z* ≥ 1 † structures in groups #3 ( P 2) and #5 ( C 2/ A 2/ I 2) has been analyzed. The study completes the survey of packing in organic structures archived in the CSD that have R ≤ 0.050 and that were reported in low - symmetry (SG# ≤ 8), low - frequency (< 5000 entries) space groups. Surveys of the structures described in P 11 and in group #7 ( Pc / Pn / Pa ) 2 have already been published. There are only 6 such structures in group #6 ( Pm ) and only 12 in #8 ( Cm ), with a number of those being either suspicious or very inorganic.
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