- 作者: 陳振興 ; 蕭錦泉 ; 方震宇
- 作者服務機構: 交通大學應用化學系
- 中文摘要: We propose a graphical method to treat dilution shift in NMR spectra to determine the monomer shift, dimer shift and dimerization constant simultaneously and consistently for the system of monomer/dimer equilibrium. The salient features include avoiding error-prone manual extrapolation to zero concentration to obtain a monomer shift, and providing consistent assessment and error estimation for the determination. The dilution shifts of 2-isopropyl phenol in C/sub 6/D/sub 12/ serve to demonstrate this graphical method. The enthalpy and entropy of dimerization are determined via a van't Hoff plot from the temperature variation of the dimerization constant.
- 英文摘要: --
- 中文關鍵字: Monomer-Dimer Equilibrium; Nmr Shift; Graphical Method; Oligomerization; Dimerization Constant
- 英文關鍵字: 單分子-二聚物平衡;核磁共振偏移;圖表法;寡分子化;二聚合常數