Department of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Straße 2, Berlin, Germany 12489.
Dalton Trans. 2012 Feb 28;41(8):2360-6. doi: 10.1039/c2dt11762b. Epub 2012 Jan 3.
The fluorolytic sol-gel reaction of magnesium methoxide with HF in methanol was studied by (19)F, (1)H and (13)C liquid and solid state NMR. In (19)F NMR five different species were identified, three of which belong to magnesium fluoride nanoparticles, i.e. NMR gave access to local structures of solid particles in suspensions. The long-term evolution of (19)F signals was followed and along with (19)F MAS NMR experiments of sols rotating at 13 kHz mechanistic insights into the ageing processes were obtained.
采用 (19)F、(1)H 和 (13)C 液体和固态 NMR 研究了甲醇中甲醇镁与 HF 的氟解溶胶-凝胶反应。在 (19)F NMR 中鉴定出了五种不同的物种，其中三种属于氟化镁纳米粒子，即 NMR 可获得悬浮液中固体颗粒的局部结构。跟踪了 (19)F 信号的长期演变，并进行了 13 kHz 旋转溶胶的 (19)F MAS NMR 实验，从而深入了解了老化过程的机理。
