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席夫碱配位聚合物的水热合成、表征、及其性质研究
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摘要
本论文工作运用水热合成法,通过调节反应物的比例、温度、溶剂、酸碱度和反应时间,合成了两个系列十一种席夫碱配位聚合物,Co_3(salpn)_2(CO_2)_2 (1)、[Ni_2Cd(salpn)_2(CO_2)_2(H_2O)_2](H_2O)_2 (2)、Zn_2Cd(salpn)_2(CO_2)_2 (3)、Co_3(salpn)_2(OAc)_2 (4)、[Zn_2Ni_3(salpn)_2(dca)_2]_n (5)、[CdNi_2(salpn)_2(dca)_2]_n (6)、[Co_2Zn(sapln)_2(dca)_2]_n (7)、[Co_2Cd (sapln)_2(dca)_2]n (8) (salpn = N,N’– bis(salicylidene) -1,3– diamino propane , dca = dicyanamide) , [Zn(C6_H_5N) (C_8H_3NO_4)·2H_2O]_n (9) [Cd(C_6H_5N)(C_8H_3NO_4)·H_2O]_n (10)和[Co(C_6H_5N)(C_8H_3NO_4)·2H_2O]_n (11)。通过元素分析和红外光谱对这些配合物进行了表征,并用X射线单晶衍射仪测定了其晶体结构。通过热重分析仪来测定其稳定性,热重分析表明,水杨醛和丙二胺形成的席夫碱配合物都具有较高的稳定,而吡啶醛和间苯二甲酸胺形成的席夫碱配合物稳定性较弱。
In our work,two series of Schiff base coordination polymers have been synthesized with hydrothermal method by adjusting the ratio of the reactants, temperature, solvent, pH value and reaction time , which are Co_3(salpn)_2(CO_2)_2 (1)、[Ni_2Cd(salpn)_2(CO_2)_2(H_2O)_2](H_2O)_2 (2)、Zn_2Cd(salpn)_2(CO_2)_2 (3)、Co_3(salpn)_2(OAc)_2 (4)、[Zn_2Ni_3(salpn)_2(dca)_2]_n (5)、[CdNi_2(salpn)_2(dca)_2]_n (6)、[Co_2Zn(sapln)_2(dca)_2]_n (7)、[Co_2Cd (sapln)_2(dca)_2]n (8) (salpn = N,N’– bis(salicylidene) -1,3– diamino propane , dca = dicyanamide) , [Zn(C6_H_5N) (C_8H_3NO_4)·2H_2O]_n (9) [Cd(C_6H_5N)(C_8H_3NO_4)·H_2O]_n (10)和[Co(C_6H_5N)(C_8H_3NO_4)·2H_2O]_n. (11). All the complexes have been characterized by elemental analyses, IR spectra and X-ray diffraction analyses. The thermal analyses shown that the former eight complexes were thermal stabler than the latter three ones.
引文
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