prolate 发表于 2025-3-28 15:23:44
http://reply.papertrans.cn/23/2272/227170/227170_41.pnggrovel 发表于 2025-3-28 20:32:26
Discrete Molecular Dynamics and NMR Line Shape Effects. General Exchange,. The issue of molecular symmetry in intermolecular exchange is addressed. The formalism is illustrated by a number of simple examples, where explicit forms of the exchange superoperators are presented.拥护 发表于 2025-3-28 23:10:27
Rotational Tunneling in Stick NMR Spectra of Solids,reedom are quantized. This approach can fail for atomic groupings of a periodic structure whose topomers differ by permuted labels of light nuclei such as protons or deuterons, and are separated by low energy barriers. The spectra of such systems can show apparent proton-proton or deuteron-deuteronfoppish 发表于 2025-3-29 05:50:02
Quantum Molecular Dynamics in Liquid-Phase Stick NMR Spectra,r transition metal polyhydride complexes in solution, for which anomalously large, apparent proton–proton couplings were reported. They were once recognized, not without astonishment, to be of the same origin as the rotational tunneling effects in solids. The representative experimental material wilHdl348 发表于 2025-3-29 08:14:37
http://reply.papertrans.cn/23/2272/227170/227170_45.png