邻苯二酚锰配合物的合成、结构表征及热分析

Synthesis,Structure Characterization and Thermal Analysis of Pyrocatechol Manganese Complex

用半固相反应法合成无水邻苯二酚锰.用EDTA滴定法测定锰的含量,通过元素分析、X-射线粉末衍射确定它的组成和结构.结果表明,配合物属单斜晶系,晶胞参数a=3.598 nm,b=12.910 nm,c=4.343nm,β=124.406°.用热重法(TG)和差示扫描量热法(DSC)研究了它在氮气气氛中的热分解过程,邻苯二酚锰在氮气气氛中一步分解生成氧化锰和有机化合物,生成的有机化合物成分比较复杂,主要成分是邻苯醌、9,10-蒽醌等.

Pyroeatechol manganese was synthesized by semi-solid phase method. Its composition and crystal structure was determined with EDTA titration, elemental analysis and tile X-ray diffraction. The complex has a monoclinic structure with a = 3. 598 nm, b = 12. 910 nm, c = 4. 343 nm and β = 124. 406°. The mechanism of thermal decomposition of catechol manganese in nitrogen atmosphere was studied by thermogravimetrie （TG） and differential scanning calorimetry （DSC）. Pyrocatechol manganese decomposed to manganese oxide and organic compounds in nitrogen atmosphere. The resulting organic compounds have complicated composition, which are mainly o-benzoquinone, 9, 10-anthraquinone etc.