✍ Scribed by Cai, Xiao-Qing ;Hu, Mao-Lin ;Zhao, Ya-Juan ;Cheng, Ya-Qian ;Wang, Shun
No coin nor oath required. For personal study only.
methylpyrazine and two p-nitrophenol molecules form a centrosymmetric unit. Intermolecular O-HÁ Á ÁN and weak C-HÁ Á ÁO hydrogen bonds are observed in the structure, leading to the formation of a two-dimensional network.
📜 SIMILAR VOLUMES
In the title complex, 2C 9 H 10 O 4 ÁC 8 H 12 N 2 , there is an inversion centre at the centre of the 2,3,5,6-tetramethylpyrazine molecule, which is linked to two endo-norbornene-cis-5,6-dicarboxylic acid molecules via O-HÁ Á ÁN hydrogen bonds. In the crystal structure, O-HÁ Á ÁO and O-HÁ Á ÁN hydro
Single-crystal X-ray study T = 93 K Mean '(C±C) = 0.002 A Ê R factor = 0.024 wR factor = 0.063 Data-to-parameter ratio = 12.9 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
Single-crystal X-ray study T = 298 K Mean (C-C) = 0.005 A R factor = 0.087 wR factor = 0.168 Data-to-parameter ratio = 12.5 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.