發(fā)布時間：2019-02-13 09:38

【摘要】：以多齒含氮雜環(huán)和羧酸為混合配體,與過渡金屬鹽構(gòu)筑的配位聚合物因其豐富多樣的拓撲結(jié)構(gòu)和在諸多前沿領(lǐng)域誘人的應(yīng)用價值而備受關(guān)注。通過金屬中心的合理選擇,有機組件的精妙設(shè)計和反應(yīng)條件的精密調(diào)控,定向組裝出性能優(yōu)異的配位聚合物已經(jīng)成為配位化學的重點研究課題之一。采用水熱合成法,以三種新型的柔性噻苯咪唑配體:1,3-二(2-(4-噻唑基)苯并咪唑-1-基)丙烷(btbp),1,4-二(2-(4-噻唑基)苯并咪唑-1-基)丁烷(btbb)和1,6-二(2-(4-噻唑基)苯并咪唑-1-基)已烷(btbh)為主配體,多種二元羧酸為輔助配體,與三種金屬鹽合成了12個新型配合物。通過X-射線單晶衍射、X-射線粉末衍射、元素分析以及紅外光譜對配合物進行了一系列表征,并對它們的拓撲結(jié)構(gòu)進行分析。以Co(Ⅱ)離子為配位中心,btbb和不同二元羧酸進行混配,構(gòu)筑4個新型鈷配合物。配合物1~3均為二維3-連接的hcb層狀結(jié)構(gòu),配合物1和3通過氫鍵作用分別拓展為三重互穿的三維mog網(wǎng)絡(luò)和(3,4)-連接的xww-3,4-P21/c超分子拓撲網(wǎng)。配合物2也通過π-π堆積作用延展成三維超分子結(jié)構(gòu)。配合物4為雙核結(jié)構(gòu),通過氫鍵作用形成3,4L39超分子拓撲網(wǎng)。以btbp,btbb和btbh和多種二元羧酸為混合配體與d10金屬離子(Cd(Ⅱ)/Zn(Ⅱ))配位,構(gòu)筑了8個未見報道的配合物。配合物5為三維三重互穿的mog骨架。配合物7是(3,4)-連接的三維3,4T10拓撲網(wǎng)。配合物6,8和11都是二維(6,3)的hcb拓撲結(jié)構(gòu),配合物11進一步拓展為cem-d氫鍵拓撲網(wǎng)。配合物9,10和12為不同形式的一維鏈,通過π-π堆積延展成二維結(jié)構(gòu)。配合物5,7,8和9都表現(xiàn)出較高的熱穩(wěn)定性;除配合物3和4外,其他配合物均具有良好的熒光特性。此外,配合物1,3,6,7和11對甲基橙染料均表現(xiàn)出較高的催化降解活性,可作為潛在的催化新材料。
[Abstract]:With polydentate heterocyclic nitrogen and carboxylic acid as mixed ligands, coordination polymers constructed with transition metal salts have attracted much attention due to their rich and diverse topological structures and attractive application value in many frontier fields. Through the rational selection of metal centers, the delicate design of organic components and the precise control of reaction conditions, the directional assembly of coordination polymers with excellent performance has become one of the key research topics in coordination chemistry. Three novel flexible thiamidazole ligands, 1- (4- (4-thiazolyl) benzimidazole-1-yl) propane (btbp), were synthesized by hydrothermal method with three novel ligands: 1- (4- (4-thiazolyl) benzimidazole-1-yl) propane. The main ligands of 1- (4- (4-thiazolyl) benzimidazole-1-yl) butane (btbb) and 1- (4- (4-thiazolyl) benzimidazole-1-yl) hexane (btbh), with a variety of dicarboxylic acids as auxiliary ligands, Twelve new complexes were synthesized with three metal salts. The complexes were characterized by X-ray single crystal diffraction, X-ray powder diffraction, elemental analysis and infrared spectroscopy, and their topological structures were analyzed. Four new cobalt complexes were constructed by using Co (鈪，

本文編號：2421410