...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structure of 2-amino-5-nitro­pyridinium sulfamate
【24h】

Crystal structure of 2-amino-5-nitro­pyridinium sulfamate

机译：2-氨基-5-硝基吡啶鎓氨基磺酸盐的晶体结构

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The title mol­ecular salt, C5H6N3O2+ ·H2NO3S−, was obtained from the reaction of sulfamic acid with 2-amino-5-nitro­pyridine. A proton transfer from sulfamic acid to the pyridine N atom occurred, resulting in the formation of a salt. As expected, this protonation leads to the widening of the C—N—C angle of the pyridine ring, to 122.9 (3)°, with the pyridinium ring being essentially planar (r.m.s. deviation = 0.025 Å). In the crystal, the ion pairs are joined by three N—H⋯O and one N—H⋯N hydrogen bonds in which the pyridinium N atom and the amino N atom act as donors, and are hydrogen bonded to the carboxyl­ate O atoms and the N atom of the sulfamate anion, thus generating an R33(22) ring motif. These motifs are linked by further N—H⋯O hydrogen bonds enclosing R33(8) loops, forming sheets parallel to (100). The sheets are linked via weak C—H⋯O hydrogen bonds, forming a three-dimensional structure. The O atoms of the nitro group are disordered over two sets of sites with a refined occupancy ratio of 0.737 (19):0.263 (19).
机译：通过氨基磺酸与2-氨基-5-硝基吡啶的反应获得标题分子盐，C5H6N3O2 +·H2NO3S-。发生质子从氨基磺酸到吡啶N原子的转移，导致形成盐。如所预期的，该质子化导致吡啶环的C-NC角加宽至122.9）（3）°，而吡啶环基本上是平面的（r.m.s.偏差＝ 0.025）。在晶体中，离子对通过三个N-H⋯O和一个N-H⋯N氢键连接，其中吡啶鎓N原子和氨基N原子充当施主，并且氢键合到羧酸盐O原子和氨基磺酸根阴离子的N原子，从而产生R33（22）环基序。这些基序由包围R33（8）环的其他N-H = O氢键连接，形成平行于（100）的薄片。片材通过弱的CHHO氢键连接，形成三维结构。硝基的O原子在两组位点上杂乱无章，精细占据比为0.737（19）：0.263（19）。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号