首页> 美国政府科技报告 >A Variable-Temperature Nuclear Magnetic Resonance Study of Complexes of Borane and Boron Trihalides with Acetone, Diethyl Ether, Dimethyl Ether, N,N-Dimethylformamide, Methanol, and Tetrahydrofuran.
【24h】

A Variable-Temperature Nuclear Magnetic Resonance Study of Complexes of Borane and Boron Trihalides with Acetone, Diethyl Ether, Dimethyl Ether, N,N-Dimethylformamide, Methanol, and Tetrahydrofuran.

机译:硼烷和三卤化硼配合物与丙酮,二乙醚,二甲醚,N,N-二甲基甲酰胺,甲醇和四氢呋喃的可变温度核磁共振研究。

获取原文

摘要

A proton and boron-11 chemical shift and coordination number study of complexes of diborane and the boron trihalides with dimethyl ether, diethyl ether, methanol, tetrahydrofuran, and, to a small extent, acetone and N,N-dimethylformamide has been completed. At low temperatures, separate proton resonance signals are observed for bulk solvent and solvent molecules complexed with the boron species. Coordination numbers were measured by the direct integration of the separate signals. The chemical shift separations for bulk and complexed solvent signals decreased in the order BBr3 > BCl3 > BF3 > BH3. An attempt is made to relate these separations to the coordinating abilities of the boron halides. The proton chemical shift data of the bases were correlated with some diborane 11B and 1H nuclear magnetic resonance results to obtain information concerning the species present in the ether-diborane solution. (Author)

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