宇称不守恒：手性分子中的核磁共振参数。

Parity non conservation: NMR parameters in chiral molecules.

作者信息

Barra A L, Robert J B, Wiesenfeld L

出版信息

Biosystems. 1987;20(1):57-61. doi: 10.1016/0303-2647(87)90020-7.

Abstract

The formula giving the parity-violating electroweak interaction contribution to the magnetic shielding tensor has been applied to enantiomers containing thallium. Using an extended Hückel relativistically parameterized method a chemical shift difference close to 1 mHz at 11.7 T is calculated in two couples of enantiomers. Such a difference is slightly lower than the extreme line width which may be actually reached in ultra-high resolution NMR.

摘要

给出奇偶宇称破缺电弱相互作用对磁屏蔽张量贡献的公式已应用于含铊的对映体。使用扩展休克尔相对论参数化方法，计算出在11.7 T时两对映体的化学位移差接近1 mHz。这种差异略低于超高分辨率核磁共振实际可能达到的极限线宽。