Self-Diffusion Coefficients of Transition-Metal Complex Ions, Ion Pairs, and Higher Aggregates by Pulsed Field Gradient Spin−Echo NMR Measurements
Self-Diffusion Coefficients of Transition-Metal Complex Ions, Ion Pairs, and Higher Aggregates by Pulsed Field Gradient Spin−Echo NMR Measurements
复制标题
通过脉冲场梯度自旋回波 NMR 测量测量过渡金属复合离子、离子对和高级聚集体的自扩散系数
DOI：
--
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
A. Macchioni
中科院分区：
文献类型：
--
作者：
C. Zuccaccia;G. Bellachioma;A. Cardaci;A. Macchioni
用脉冲场梯度自旋回波核磁共振测量了配合物trans-[Ru（PMe 3）2（CO）（COMe）（pz 2-CH 2）] BPh 4和trans-[Ru（PMe 3）2（CO）（COMe）（pz 2-BH 2）]在硝基甲烷、氯仿和二氯甲烷中的分子自扩散系数随浓度的变化。通过使用中性络合物作为参考，假设它不经历缔合过程，已经获得了离子（在硝基甲烷中）、离子对（在低浓度氯仿中）和离子四重体（在高浓度氯仿中）的存在的明确指示。
The molecular self-diffusion coefficients of the complexes trans-[Ru(PMe3)2(CO)(COMe)(pz2-CH2)]BPh4 and trans-[Ru(PMe3)2(CO)(COMe)(pz2-BH2)] have been measured by pulsed field gradient spin−echo NMR measurements in nitromethane, chloroform, and methylene chloride as a function of concentration. By using the neutral complex as reference with the assumption that it does not undergo associative processes, clear indications of the presence of ions (in nitromethane), ion pairs (in chloroform at low concentration), and ion quadruples (in chloroform at high concentration) have been obtained.