Tetranuclear manganese(II) complexes of hydrazone and carbohydrazone ligands: Synthesis, crystal structures, magnetic properties, Hirshfeld surface analysis and DFT calculations
作者:Marjan Abedi、Okan Zafer Yeşilel、Ghodrat Mahmoudi、Antonio Bauzá、Samuel E. Lofland、Yusuf Yerli、Werner Kaminsky、Piotr Garczarek、Jan K. Zaręba、Andrea Ienco、Antonio Frontera、Masoumeh Servati Gargari
DOI:10.1016/j.ica.2015.12.012
日期:2016.3
The structures of 1 and 3 can be described as tetranuclear and are formed from four Mn(II) ions bridged by four ligands. Complex 2 exhibits a centrosymmetric tetranuclear structure with two types of Mn(II) centers with double end-on (EO) azido bridges. All the complexes have similar magnetic behavior and exhibit weak intramolecular antiferromagnetic coupling, which is consistent with the oxygen-bridged
摘要配合物[Mn4(L1)4(N3)4](1),[Mn4(L2)4(μ-N3)2(N3)2(OCH3)2](2)和[Mn4(μ-L3) 4(NCS)4]·6CH3OH(3)[L1 = N-1-(吡啶-2-基)亚乙基吡啶并hydr唑啉酸酯,L2 = N-苯基(吡啶-2-基)亚甲基吡啶并肼酸酯,L3 =((苯基合成了(-2-基)亚甲基)肼基)((Z)-2-(苯基(吡啶-2-基)亚甲基)肼基)甲醇酯],并对其结构进行了表征。1和3的结构可描述为四核,由四个配体桥接的四个Mn(II)离子形成。配合物2表现出中心对称的四核结构,具有两种类型的Mn(II)中心和双端基(EO)叠氮基桥。所有的配合物具有相似的磁行为,并表现出弱的分子内反铁磁耦合,这与具有大Mn–O–Mn桥角的氧桥方形结构是一致的。从理论上获得的-1.7 cm-1(对于1),-0.7 cm-1(对于2)和-3.3 cm-1(对于3)的J值