...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Stability of [MeBu3N][Tf2N] under gamma irradiation
【24h】

Stability of [MeBu3N][Tf2N] under gamma irradiation

机译：γ辐照下[MeBu3N] [Tf2N]的稳定性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The stability of the ionic liquid [MeBu3N][Tf2N], dry or after contact with water (where [MeBu3N](+) is the methyltributylammonium cation and [Tf2N](-) is the bistriflimide anion), was studied under Cs-137 gamma irradiation in argon and in air. In a quantitative study with an absorbed dose of 2 MGy this ionic liquid was highly stable regardless of the radiolysis conditions. The radiolytic disappearance yields determined by ESI-MS were -0.38 and -0.25 mu mol J(-1) for the cation and anion, respectively. ESI-MS, NMR, and liquid chromatography coupled with ESI-MS identified a large number of degradation products in very small quantities for the same dose. The cation radicals were formed by the loss of a Bu-lozenge group, the Me-lozenge group, or two H-lozenge atoms to form a double bond with the butyl chain. Radiolysis of the anion produced mainly F-lozenge and CF3 lozenge radicals. The anion radicals recombined with the cation to form a wide range of secondary degradation products regardless of the radiolysis conditions.
机译：在Cs-137下研究了干燥或接触水后离子液体[MeBu3N] [Tf2N]的稳定性（其中[MeBu3N]（+）是甲基三丁基铵阳离子，[Tf2N]（-）是双杀菌肽阴离子）。氩气和空气中的伽马射线辐照。在吸收剂量为2 MGy的定量研究中，无论辐射分解条件如何，该离子液体都是高度稳定的。通过ESI-MS测定的阳离子和阴离子的辐射消失量分别为-0.38和-0.25μmol J（-1）。 ESI-MS，NMR和液相色谱与ESI-MS结合使用可确定相同剂量下的大量降解产物。通过失去Bu-锭剂基团，Me-锭剂基团或两个H-锭剂原子以与丁基链形成双键而形成阳离子自由基。阴离子的辐射分解主要产生F-锭剂和CF3锭剂自由基。不论辐射分解条件如何，阴离子自由基都会与阳离子重新结合，形成各种次级降解产物。

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