Zhao Zhiying, Zhang Wanwan, He Zhangzhen
State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou , Fujian 350002 , PR China.
Inorg Chem. 2019 May 6;58(9):5671-5676. doi: 10.1021/acs.inorgchem.9b00008. Epub 2019 Apr 18.
Two mercury selenite compounds HgM(SeO)(HO) (M = Co, Ni) are synthesized using a conventional hydrothermal method. Both compounds crystallize in the monoclinic structure with a C2/ c space group, and equivalent Co or Ni ions exhibit a stacked triangular lattice. Magnetic measurements suggest different magnetic properties between these two isostructural compounds, in which HgCo(SeO)(HO) undergoes a canted antiferromagnetic order below T = 7.6 K, while HgNi(SeO)(HO) exhibits a collinear antiferromagnetic order below T = 9.0 K. When applying a magnetic field, two successive magnetic transitions are observed at B ∼ 1 T and B ∼ 3.6 T in HgCo(SeO)(HO), whereas only one field-induced transition is detected around 3.1 T in HgNi(SeO)(HO).
采用传统水热法合成了两种亚硒酸汞化合物HgM(SeO)(HO)（M = Co，Ni）。两种化合物均结晶为单斜结构，空间群为C2/c，等效的Co或Ni离子呈现堆叠三角晶格。磁性测量表明这两种同构化合物具有不同的磁性，其中HgCo(SeO)(HO)在T = 7.6 K以下经历倾斜反铁磁序，而HgNi(SeO)(HO)在T = 9.0 K以下呈现共线反铁磁序。施加磁场时，在HgCo(SeO)(HO)中于B ∼ 1 T和B ∼ 3.6 T处观察到两个连续的磁转变，而在HgNi(SeO)(HO)中仅在3.1 T左右检测到一个场致转变。
