• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Positive Ion Chemistry of Acetylene and Methylacetylene Clusters. Formation of Benzene and C2nH2n+ Ions via Intracluster Polymerization Reactions.
【24h】

Positive Ion Chemistry of Acetylene and Methylacetylene Clusters. Formation of Benzene and C2nH2n+ Ions via Intracluster Polymerization Reactions.

机译：乙炔和甲基乙炔团簇的正离子化学。通过团簇内聚合反应形成苯和C2nH2n +离子。

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

摘要

We report the observation of large (n up to -25) acetylene and methylacetylene cluster ions- the largest yet reported from ionization of neutral (C2H2)n or (CH3CCH)n clusters. The cluster ion intensity distributions of both systems display prominent magic numbers at n = 3. This finding is indicative of intra- clusters ion-molecule reactions giving rise to what are most likely benzene and trimethylbenzene ions from (C2H2)n+ and (CH3CCH)n+ cluster ions, respectively. The n acetylene cluster ion intensity distributions observed under efficient clustering conditions are further characterized by unexpected features, most notably a sharp break at n = 7 and a strong magic number at n 14. The mass spectra of methyl-acetylene display a less dramatic break at n 7 and a weak magic number around n 10. These surprising structures may arise as a result of the formation of particularly stable covalently bonded molecules ions. In view of the unique properties of carbon it is possible that these ions possess spherical cage geometries reminiscent of the fullerenes.

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