摘要
采用1,3-二(4-吡啶基)丙烷为模板剂,水热法合成了3个以3,5-二(氧乙酸基)苯甲酸(H_3BOABA)为配体的多核Mn(Ⅱ)配位聚合物:{(H_3O)[Mn_4(BOABA)_2(OH)_3(H_2O)]·H_2O}n(1),{(H_3O)_4[Mn7(BOABA)_4(OH)_6(H_2O)_2]}n(2),{(H_3O)_4[Mn_7(BOABA)_4(OH)_4(Cl)_2(H_2O)_2]·2H_2O}n(3)。通过X射线衍射,元素分析、红外光谱和热重分析进行了结构表征。结构分析表明,1为正交Pbcm空间群,由四核锰簇单元[Mn_4(μ3-OH)_3(COO)_(10)]构成具有(5,12)-连接的3D网络结构,拓扑符号为(32.47.5)2(38.423.514.621)。配位聚合物2与3为异质同构化合物,属正交Ccma空间群,分别由七核锰簇单元[Mn_7(OH)_6(COO)_(16)]和[Mn_7(OH)_4Cl_2(COO)_(16)]构成的具有(3,12)-连接的2D网络结构,拓扑符号为(43)4(430.624.812)。测定了聚合物的氧化-还原电位。
Three polynuclear manganese(Ⅱ) coordination polymers(CPs), {(H3O)[Mn4(BOABA)2(OH)3(H2O)]·H2O}n (1), {(H3O)4[Mn7(BOABA)4(OH)6(H2O)2]}n (2) and {(H3O)4[Mn7(BOABA)4(OH)4(Cl)2(H2O)2]·2H2O}n (3) (H3BOABA=3,5-bis-oxyacetate-benzoic acid) have been synthesized under hydrothermal condition and structurally characterized by single crystal X-ray diffraction analyses, XRPD, IR spectra and thermal analyses. CP 1 can be rationalized as a binodal (5,12)-connected 3D topology network based on tetranuclear[Mn4(μ3-OH)3(COO)10] clusters with point symbol of (32.47.5)2(38.423.514.621). CPs 2 and 3 are isostructural and present binodal (3,12)-connected 2D topology network based respectively on heptanuclear[Mn7(OH)6(COO)16] and[Mn7(OH)4Cl2(COO)16] clusters with point symbol of (43)4(430.624.812). The cyclic voltammograms of the CPs reveal that the processes of the redox are all irreversible.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2017年第12期2169-2176,共8页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21173197)资助项目