Organooxotin and cobalt/manganese heterometallic nanoclusters exhibiting single-molecule magnetism
Jun-Jie Fang, Yun-Peng Xie*, Xing Lu*
Chinese Journal of Structural Chemistry
https://www.sciencedirect.com/science/article/pii/S0254586125000054
Abstract
The synthesis of nine heterometallic Sn-Co/Mn nanoclusters has been achieved through a stepwise self-assembly approach, utilizing polynuclear oxygen donors as key precursors. The tBuPO32− ligands play a pivotal role in bridging trinuclear organotin clusters with Co2+/Mn2+ ions. Shielded by O/N/P-containing ligands, the Co2+ and Mn2+ ions assume distorted tetrahedral and hexahedral coordination environments, respectively. Ligands featuring two or three N/P coordination sites facilitate the bridging of multiple [(nBuSn)3(MeO)3(μ3-O)(tBuPO3)3Co] substructures, highlighting their structural robustness. Significantly, the dynamic magnetization measurements indicated that (Sn3-Co1)2-1,5-naphyd NC exhibits a slow relaxation behavior of magnetization. This study delves into the intricate self-assembly process of Sn-Co/Mn nanoclusters at the molecular level, offering valuable insights for the development of novel SMMs.
