5-硝基间苯二甲酸锰配合物的合成、晶体结构和热分解研究(英文)

Synthesis,Crystal Structure and Thermal Behavior of 5-Nitroisophthalate Complex with Mn(Ⅱ)

合成了5-硝基间苯二甲酸锰的配合物———Mn(nip)(H2O)5,并用X射线单晶衍射、元素分析、DSC、TG和DTG技术对其进行了表征。配合物的配位中心Mn(Ⅱ)与5-硝基间苯二甲酸和5个水分子配位形成配位八面体结构。根据热分析结果和FT-IR分析可推断,加热过程中该晶体先失去5个配位水,后失去配体5-硝基间苯二甲酸,同时生成氧化锰和某种聚合物。

The crystal of the title complex Mn （nip） （ H2 O）5 （ nip = 5-nitroisophthalate ） was synthesized, and cultured in the filtrate of the reaction mixture. The X-ray single crystal diffractometer with graphite monochromated MoK （A = 0. 71073A）, elemental microanalysis, FT-IR, DSC and TG-DTG techniques were used to characterize the structure and thermal behaviors of the title complex. The results show that the central Mn^2＋ cation coordinates to the ligands 5-nitroisophthalate and 5H2O in a distorted octahedral pattern. And the title coordination compound loses its five water molecules at the first step and the 5-nitroisophthalate at the second step during heating based on the thermal analyses and FT-IR data.