Tanase Stéfania, Tuna Floriana, Guionneau Philippe, Maris Thierry, Rombaut Guillaume, Mathonière Corine, Andruh Marius, Kahn Olivier, Sutter Jean-Pascal
Institut de Chimie de la Matière Condensée de Bordeaux, UPR CNRS No. 9048, F-33608 Pessac, France.
Inorg Chem. 2003 Mar 10;42(5):1625-31. doi: 10.1021/ic025990z.
Two molecule-based magnets, [Mn(2)(tea)Mo(CN)(7)].H(2)O, 1, and [Mn(2)(tea)Mo(CN)(7)], 2 (tea stands for triethanolamine), formed with the 4d ion building block, Mo(CN)(7)(-), Mn(II) ions, and an additional ligand, tea, have been prepared and structurally characterized by single-crystal X-ray analyses. Whereas 1 is obtained by a self-assembling process in solution, compound 2 is quantitatively formed through a smooth thermal treatment of 1. Their magnetic properties revealed that these compounds exhibit magnetic ordering at T(c) = 75 and 106 K respectively for compounds 1 and 2. The difference for their critical temperature is attributed to the geometry of the coordination sphere of a Mn(II) site found to be square-pyramidal for 1 and tetrahedral for 2.
两种基于分子的磁体，[Mn₂(tea)Mo(CN)₇]·H₂O（1）和[Mn₂(tea)Mo(CN)₇]（2）（tea代表三乙醇胺），由4d离子构建单元[Mo(CN)₇]⁴⁻、Mn(II)离子和额外的配体tea形成，已通过单晶X射线分析进行了制备和结构表征。1是通过溶液中的自组装过程获得的，而化合物2是通过对1进行温和热处理定量形成的。它们的磁性表明，这些化合物分别在T(c) = 75 K和106 K时表现出磁有序，化合物1和2的临界温度差异归因于发现的Mn(II)位点的配位球几何形状，1为四方锥，2为四面体。
