Syntheses, Crystal Structures and Magnetic Properties of Two New Low-dimensional Manganese (Ⅱ) Coordination Compounds

作     者：LI Jian-Hua WANG Xiao-Zhong WEI Hai-Wen HOU Qin LAI Xiao-Yong LIU Xiang-Yu YANG Qing-Feng 李建华;王晓中;魏海文;侯芹;赖小勇;刘翔宇;杨庆凤

作者机构：State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical EngineeringNational Demonstration Center for Experimental Chemistry EducationCollege of Chemistry and Chemical Engineering Ningxia University Yinchuan 750021China College of Chemistry and Materials ScienceShandong Agricultural UniversityTaian 271018China 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2020年第39卷第6期

页      面：1077-1086页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Supported by the Scientific Research Foundation of the Higher Education Institutions of Ningxia (No. NGY2017042) the National Natural Science Foundation of China (No. 21961027,21461020) the Natural Science Foundation of Ningxia (No. 2019AAC03071) the National First-rate Discipline Construction Project of Ningxia (Chemical Engineering and Technology)(NXYLXK2017A04) 

主　　题：low-dimensional coordination compounds helical structure magnetic properties 

摘      要：Two new low-dimensional Mn(Ⅱ)coordination compounds of Mn(H2pimdc)2(phen)(compound 1)and[Mn(Hpimdc)(phen)]n·nH2O(compound 2)were synthesized,where H3pimdc is a 2-propyl-imidazole-4,5-dicarboxylic acid and phen is 1,*** compounds were thoroughly analyzed by X-ray single-crystal diffraction,element analysis,IR spectra,PXRD and thermal analysis.X-ray single-crystal diffraction analyses indicate that the phen ligands terminate metal ions on two sides to prevent the linkage between the neighboring metal ions into a higher dimensional structure in compounds 1 and *** 1 is constructed from mononuclear molecules which form the 1D helical supramolecular chain by N-H···O hydrogen *** compound 2,Hpimdc is a tetradentate bridging ligand,which binds Mn(Ⅱ)ions to generate a single-stranded right helical chain parallel to the b *** 1D chains are additionally coupled by H-bonds as well asπ···πstacking interactions,which formed a 3D supramolecular ***,compound 2 demonstrated temperature-dependent magnetic susceptibility and negative value ofθ(equal to-9.09 K),which is indicative of weak antiferromagnetic interactions between Mn(Ⅱ)ions.