{"title":"1-Nitronaphthalene, a non-OD, non-MDO polytype","authors":"Matthias Schöbinger, Berthold Stöger","doi":"10.1515/zkri-2024-0089","DOIUrl":null,"url":null,"abstract":"Crystals of 1-nitronaphthalene were grown by evaporation of a methanol solution. The structure [<jats:italic>P</jats:italic>2<jats:sub>1</jats:sub>/<jats:italic>c</jats:italic>, <jats:italic>a</jats:italic> = 13.2780(13) Å, <jats:italic>b</jats:italic> = 3.8131(3)° Å, <jats:italic>c</jats:italic> = 31.851(3) Å, <jats:italic>β</jats:italic> = 91.173(8), <jats:italic>V</jats:italic> = 1,612.3 Å<jats:sup>3</jats:sup>] was solved from a crystal twinned by twofold rotation about [100]. Twinning is explained by the polytype character: layers with (idealized) <jats:italic>p</jats:italic>2<jats:sub>1</jats:sub>11 symmetry can connect via either 1‾ or 2<jats:sub>1</jats:sub> operations, leading to geometrically distinct pairs of layers. In the twin individuals, the two kinds of contacts alternate, at the composition plane two subsequent contacts of the same type are realized.","PeriodicalId":23855,"journal":{"name":"Zeitschrift für Kristallographie - Crystalline Materials","volume":"69 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Zeitschrift für Kristallographie - Crystalline Materials","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/zkri-2024-0089","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Crystals of 1-nitronaphthalene were grown by evaporation of a methanol solution. The structure [P21/c, a = 13.2780(13) Å, b = 3.8131(3)° Å, c = 31.851(3) Å, β = 91.173(8), V = 1,612.3 Å3] was solved from a crystal twinned by twofold rotation about [100]. Twinning is explained by the polytype character: layers with (idealized) p2111 symmetry can connect via either 1‾ or 21 operations, leading to geometrically distinct pairs of layers. In the twin individuals, the two kinds of contacts alternate, at the composition plane two subsequent contacts of the same type are realized.
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