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作 者:熊欣婷 熊志强 肖攀蕾 聂旭亮[1] 宋秀英[1] 易绣光[3] XIONG Xinting;XIONG Zhiqiang;XIAO Panlei;NIE Xuliang;SONG Xiuying;YI Xiuguang(College of Chemistry&Materials,School of Information and Engineering,Key Laboratory of Chemical Utilization of Plant Resources of Nanchang,Jiangxi Agricultural University,Nanchang 330045,China;Instrumental Analysis Center Nanchang Hangkong University,Nanchang 330063,China;School of Chemistry and Chemical Engineering,Jinggangshan University,Ji′an,Jiangxi 343709,China)
机构地区:[1]江西农业大学化学与材料学院,计算机与信息工程学院,南昌市植物资源化学利用重点实验室,南昌330045 [2]南昌航空大学分析测试中心,南昌330063 [3]井冈山大学化学化工学院,吉安343709
出 处:《无机化学学报》2024年第9期1661-1670,共10页Chinese Journal of Inorganic Chemistry
基 金:国家自然科学基金(No.22168018);江西省自然科学基金(No.20232BAB203048);江西省教育厅重点基金(No.GJJ200404)资助。
摘 要:由5-溴水杨酸(H_(2)BBA)合成了钠/镉配合物[Na(HBBA)]_(n) (1)和[Cd(HBBA)_(2)(4,4′-Bipy)]_(n) (2)(H_(2)BBA=5-溴水杨酸,4,4′-Bipy=4,4′-联吡啶)。通过元素分析、红外光谱、热重、粉末X射线衍射和单晶X射线衍射表征了其结构。配合物1的不对称单元中有1个钠离子和1个HBBA-。钠离子是六配位的三棱柱构型,HBBA-配体的3个氧原子分别与2个钠离子配位,连接相邻的钠离子形成了3条一维链结构,HBBA-配体连接相邻的3条一维链形成了二维网络结构。分子间氢键连接相邻的二维网络结构形成了三维氢键网络结构。配合物2中有1个镉离子、2个HBBA-和1个4,4′-Bipy。镉离子是六配位的扭曲八面体构型,4,4′-Bipy配体连接相邻的2个镉离子形成了一维链结构。分子间氢键连接相邻的一维链结构形成了三维氢键网络结构。通过Hirshfeld表面和指纹图分析了配合物晶体中的弱分子间作用力。详细研究了配合物1和2的热稳定性和抑菌活性。Na(Ⅰ)/Cd(Ⅱ)complexes,[Na(HBBA)]_(n)(1)and[Cd(HBBA)_(2)(4,4′-Bipy)]_(n)(2),(H_(2)BBA=5-bromo-2-hydroxy-benzoic acid and 4,4′-Bipy=4,4′-bipyridine)were synthesized with 5-bromo-2-hydroxybenzoic acid ligands by solvo-thermal condition and structurally characterized by elemental analysis,IR,thermogravimetric analysis,powder X-ray diffraction and single crystal X-ray diffraction.The asymmetric unit of complex 1 consists of one Na(Ⅰ)ion and one HBBA-ligand.Naion is a six-coordinated triangular prism structure.Three oxygen atoms of the HBBA-ligand coordinate with two Na(Ⅰ)ions,connecting adjacent Na(Ⅰ)ions to form three 1D chain structures,and the HBBA-ligand connects three adjacent 1D chains to form a 2D network structure.Intermolecular hydrogen bonds connect adjacent 2D network structures to form a 3D hydrogen bond network structure.The asymmetric unit of com-plex 2 consists of one Cd(Ⅱ)ion,two HBBA-ligands,and one 4,4′-Bipy ligand.Cadmium ion is a six-coordinated twisted octahedron structure,and the 4,4′-Bipy ligand connects two adjacent cadmium ions to form a 1D chain struc-ture.Intermolecular hydrogen bonds connect adjacent 1D links to form a 3D hydrogen bond network structure.The weak intermolecular interaction in building crystal blocks was analyzed in detail by Hirshfeld surface analysis.The reciprocal Na…O/H…Br/H…H/C…C/C…H/O…O contacts dominate over 87%of total Hirshfeld surface of com-plex 1,and the reciprocal H…H/H…O/H…Br/C…C/C…H/O…O/C…Br contacts dominate over 86.8%of the total Hirshfeld surface of complex 2.The thermal stability and antifungal activity of complexes 1 and 2 were studied in detail.Complex 2 has a good inhibitory effect on eight pathogenic fungi,among which the antifungal effect on Fusar-ium oxysporum f.sp.niveum and Rhizoctonia solani AG1 were the best,and the inhibitory rates were as high as 99.94%and 100%.CCDC:2330874,1;2330873,2.
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