摘要
在溶剂热条件下,以2-萘甲酸(HL)与1,10-菲啰啉(phen)为配体、碳酸锰为金属源合成了一例双核锰配合物[Mn_(2)(L)_(4)(phen)_(2)(H_(2)O)_(2)](1)。通过单晶X射线衍射、元素分析、傅里叶变换红外光谱、粉末X射线衍射和热重分析等对配合物1进行结构表征。单晶衍射分析表明配合物1属于三斜晶系,P1空间群,晶胞参数为a=0.76989(5)nm,b=1.17586(5)nm,c=1.66830(9)nm,α=107.074(5)°,β=96.167(5)°,γ=106.901(5)°。不对称单元由一个锰离子、两个2-萘甲酸根、一个1,10-菲啰啉和一个水分子组成,Mn(II)呈扭曲的八面体构型。两个不对称单元之间通过羧基氧原子桥接形成双核分子,双核结构之间通过π…π堆积作用形成2D超分子结构。荧光光谱分析结果表明:配合物1具有良好的荧光性能,最大发射波长为416 nm(λ_(ex)=302 nm)。热重分析表明配合物1能够稳定到117℃,之后开始失水(失水量为3.18%),脱水之后的结构能稳定到223℃,之后有机骨架开始坍塌。Hirshfeld表面分析研究了分子间的相互作用。
A case of binuclear manganese complex[Mn_(2)(L)_(4)(phen)_(2)(H_(2)O)_(2)](1)was synthesized under solvothermal conditions with 2-naphthalic acid(HL)and 1,10-phenanthrenoline(phen)as ligands and manganese carbonate as the metal source.Complex 1 was characterized by single-crystal X-ray diffraction,elemental analysis,fourier transform infrared spectroscopy,powder X-ray diffraction,and thermogravimetric analysis.single-crystal X-ray diffraction shows that complex 1 belonged to the triclinic crystal system P 1 space group and the crystal cell parameters are a=0.76989(5)nm,b=1.17586(5)nm,c=1.66830(9)nm,andα=107.074(5)°,β=96.167(5)°,γ=106.901(5)°.The asymmetric unit consists of a manganese ion,two 2-naphthoate anions,one 1,10-phenanthroline ligand and one water molecule,and Mn(II)atom is in a distorted octahedral configuration.The asymmetric units are bridged by carboxyl-oxygen atoms to form a dinuclear structure and then the binuclear structures are linked into a 2D supramolecular structure throughπ…πstacking interactions.The results of fluorescence spectroscopy show that complex 1 has good fluorescence performance and the maximum emission wavelength is 416 nm(λ_(ex)=302 nm).Thermogravimetric analysis shows that complex 1 remains stable to 117℃,and then begins to lose water of 3.18%,the structure after dehydration can stabilize at 223℃,after which the organic framework begins to collapse.Hirshfeld surface analysis is used to study the interaction between molecules.
作者
任娜娜
江旭滢
宋合兴
史福林
王雅茹
孙赞
REN Nana;JIANG Xuying;SONG Hexing;SHI Fulin;WANG Yaru;SUN Zan(School of Chemistry and Materials Science,Qinghai Minzu University,Xining 810007,China;Lab and Equipment Management,Qinghai Minzu University,Xining 810007,China)
出处
《人工晶体学报》
CAS
北大核心
2024年第10期1776-1783,共8页
Journal of Synthetic Crystals
基金
青海省自然科学基金(2020-ZJ-964Q)
2024年青海民族大学研究生创新项目(12M2024028)。
