Electrosynthesis of transition metal fluoro complexes by the dissolution of a sacrificial metal anode
摘要:
A general method for the electrosynthesis of anionic fluoro complexes of transition metals has been developed by the oxidation of sacrificial metal anodes in 20% HF medium at room temperature and at an applied potential of 2-8 V. Some mixed-valent complexes, e.g. Fe2F5.2H2O and Fe2F5.7H2O, have also been obtained by the same method. K2[MnF5].H2O was obtained by subsequent electrolytic oxidation of the Mn(II) fluoro complex obtained in situ in the first step. The method is rapid and gives a good yield with high purity.
Here, the synthesis of sub-micron MMnF3 (M = Na or K) particles by a rapid microwave-assisted approach is reported. Adjustment of the Na+-to-Mn2+ ratio in the reaction mixture yielded tuneable morphologies, i.e., rods, ribbons, and plates. Relaxometric results indicated that poly(acrylic acid)-capped MMnF3 particles exhibited characteristic magnetic properties, which endows them with potential T1-weighted
在这里,报告了通过快速微波辅助方法合成亚微米 MMnF 3 (M = Na 或 K) 粒子。调整反应混合物中的 Na +与 Mn 2+ 的比例产生可调节的形态,即棒状、带状和板状。松弛测量结果表明,聚(丙烯酸)封端的 MMnF 3颗粒表现出特有的磁性,这赋予它们潜在的T 1加权造影剂能力。
Hydrothermal crystal growth of perovskite-type fluorides