研究者情報 | 神奈川大学

チカライシ　ノリコ Chikaraishi Noriko 力石　紀子所属神奈川大学理学部理学科職種助教
言語種別	英語
発行・発表の年月	2015/04
形態種別	学術雑誌
査読	査読あり
標題	Packing polymorphism in the crystal structure of 4,5-dimethoxy-2-nitrobenzyl acetate
執筆形態	共著
掲載誌名	Acta Crystallographica Section E
巻・号・頁	71,pp.483-486
著者・共著者	Noriko Chikaraishi Kasuga, Yusuke Saito, Hiriyasu Sato, Kazuo Yamaguchi
概要	The title compound, C11H13NO6, shows two polymorphs, orange and yellow forms, both of which crystallize in the space group P21/c. The molecular structures in the two polymorphs are essentially similar and adopt a planar structure, the maximum deviations for the non-H atoms being 0.1836 (13) and 0.1276 (13) Å, respectively, for the orange and yellow forms. In the orange crystal, molecules are linked by an intermolecular C-H...O interaction into a helical chain along the b-axis direction. The chains are stacked along the c axis through a [pi]-[pi] interaction [centroid-centroid distance = 3.6087 (11) Å], forming a layer parallel to the bc plane. In the yellow crystal, molecules are connected through C-H...O interactions into a sheet structure parallel to (-302). No significant [pi]-[pi] interaction is observed. The unit-cell volume of the orange crystal is larger than that of the yellow one, and this accounts for the predominant growth of the yellow crystal.
DOI	doi:10.1107/S2056989015006714