Two Polynuclear Fe Complexes with Boat-like Core:Syntheses,Structures and Magnetic Properties  

作　　者：YANG Na YANG Hua TIAN Hai-Quan LI Da-Cheng DOU Jian-Min 杨娜;杨华;田海权;李大成;窦建民(Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology,School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252059,China)

机构地区：[1]Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology,School of Chemistry and Chemical Engineering,Liaocheng University,Liaocheng 252059,China

出　　处：《Chinese Journal of Structural Chemistry》2022年第3期47-54,I0008,共9页结构化学（英文）

基　　金：supported by the National Natural Science Foundation of China (Nos. 21671093 and 21701078)

摘　　要：Two novel polynuclear complexes{NaFe4(μ4-O)(L)4(μ2-Cl)[Fe(CN)_(5)NO](H_(2)O)(DMF)_(2)}(1)and{NaFe_(4)(μ4-O)(L)_(4)(μ2-OEt)[Fe(CN)_(5)NO](H_(2)O)(DMF)_(2)}(2)have been prepared using the tetradentate N-(2-hydroxy-ethyl)-3-methoxysalicylaldimine Schiff-base ligand(H2L)with the help of[Fe(CN)_(5)NO]_(2)-linkers,where the ligand was in situ synthesized through the condensation of o-vanillin and ethanolamine in the formation process of complexes.The resulting complexes possess“boat-like”structure constructed through three Fe ions and one Na ion with the fourth Fe ion acting as the“paddle”.The“hull bottom”contains an eight-membered metallamacrocycle with metalla-crown-like motif and[-M-O-]repeat unit.Both complexes display three-dimensional frameworks through C-H···N hydrogen bonds,C-H···Cl hydrogen bonds,andπ-πstacking interactions with the introduction of solvent molecules and coordination anions.Variable-temperature magnetic susceptibility measurements reveal strong antiferromagnetic couplings between the metal centers in complexes 1 and 2.

关 键 词：crystal structures magnetic properties SCHIFF-BASE metallamacrocycle 

分 类 号：O641.4[理学—物理化学]