新型三苯基吡咯修饰的吡啶双噁唑啉配合物的合成及磁性研究

Synthesis and Magnetic Properties of New Triphenylpyrrole-Modified Pyridine Bisoxazoline Complexes

通过Suzuki-Miyaura反应合成了新型三苯基吡咯修饰的吡啶双噁唑啉配体L,分别与锌和铁的高氯酸盐反应合成配合物(ZnL)(ClO)和(FeL_(2))(ClO_(4))_(2)。通过核磁共振光谱、质谱和单晶X射线衍射的方法对其配体和配合物结构进行了表征,并通过变温磁化率测试研究配合物(FeL_(2))(ClO_(4))_(2)的自旋交叉行为。结果表明,二价锌离子和铁离子与两个配体上的6个氮原子配位,为扭曲的正八面体六配位模式。配合物(FeL_(2))(ClO_(4))_(2)表现出逐渐地不完全的自旋交叉。

A new triphenylpyrrole-modified pyridine bisoxazoline ligand L was synthesized by Suzuki-Miyaura reaction, and(ZnL)(ClO)and(FeL_(2))(ClO_(4))_(2)complexes were synthesized by reacting L with zinc and iron perchlorate. The structure of ligand and complexes were characterized by nucler magnetic resonane spectroscopy, mass spectrum and single crystal X-ray diffraction methods, and the spin-crossover behavior of(FeL_(2))(ClO_(4))_(2)complex was studied by variable temperature magnetic susceptibility test. The results showed that the divalent zinc ions and iron ions are coordinated with six nitrogen atoms on the two ligands, which is a twisted octahedral hexacoordination mode. The complex of(FeL_(2))(ClO_(4))_(2)showed a gradual and incomplete spin crossover.