Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskiy pr. 31, Moscow, 119991, Russia.
Department of Chemistry, Lomonosov Moscow State University, Lenin's hills 1/3, Moscow, 119991, Russia.
Chemistry. 2018 Sep 3;24(49):12779-12783. doi: 10.1002/chem.201801963. Epub 2018 Aug 1.
Iridium(III) is often considered to be one of the most inert octahedral metal ions. Herein we present a phenanthroimidazole-based bis-cyclometalated iridium(III) chloride undergoing a facile chloro ligand exchange with iodine, in a gas-solid reaction under ambient conditions. Monitoring the progress of the reaction by X-ray diffraction analysis reveals the crystal-packing-induced exceptional stereoselectivity of this topochemical transformation. The results provide excellent opportunities to modulate the geometry and kinetic properties of cyclometalated iridium(III) complexes that may be very promising in catalysis and design of anticancer agents.
三价铱通常被认为是最惰性的八面体金属离子之一。在此，我们提出了一种基于菲咯啉咪唑的双环金属化铱(III)氯化物，它在环境条件下的气固反应中容易与碘发生氯配体交换。通过 X 射线衍射分析监测反应的进展，揭示了这种拓扑化学转化中晶体堆积诱导的特殊立体选择性。研究结果为调节环金属化铱(III)配合物的几何形状和动力学性质提供了极好的机会，这在催化和抗癌药物设计中可能非常有前途。
