Zhu Tianyu, Mentré Olivier, Yang Haoming, Jin Yong, Zhang Xinan, Arévalo-López Ángel M, Ritter Clemens, Choi Kwang-Yong, Lü Minfeng
School of Environmental & Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, Perople's Republic of China.
Université Lille Nord de France, UMR 8181 CNRS, Unité de Catalyse et de Chimie du Solide (UCCS USTL), F-59655 Villeneuve d'Ascq, France.
Inorg Chem. 2021 Aug 16;60(16):12001-12008. doi: 10.1021/acs.inorgchem.1c01074. Epub 2021 Jul 26.
Two M(SeO)F fluoro-selenites (M = Mn, Ni) have been synthesized using optimized hydrothermal reactions. Their 3D framework consists of 1D-[MOF]chains of edge-sharing octahedra with a rare topology of alternating O-O and F-F μ bridges. The interchain corner-sharing connections are assisted by the mixed O vs F anionic nature and develop a complex set of M-X-M superexchanges as calculated by LDA+. Their interplay induces prominent in-chain antiferromagnetic frustration, while the interchain exchanges are responsible for the cycloidal magnetic structure observed below ≈ 21.5 K in the Ni case. For comparison the Mn compound develops a nearly collinear spin (canted) ordering below ≈ 26 K with ferromagnetic chain units.
通过优化的水热反应合成了两种M(SeO)F氟代亚硒酸盐（M = Mn，Ni）。它们的三维骨架由一维的[MOF]链组成，这些链由共边八面体构成，具有罕见的交替O - O和F - F μ桥拓扑结构。链间角共享连接由O和F混合阴离子性质辅助，并如通过LDA +计算的那样发展出一组复杂的M - X - M超交换。它们的相互作用在链内引起显著的反铁磁挫折，而链间交换则导致在Ni化合物中约21.5 K以下观察到的摆线磁结构。作为对比，Mn化合物在约26 K以下发展出具有铁磁链单元的近共线自旋（倾斜）有序。
