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在水热条件下,以辅助配体均苯四酸,合成了3个二吡啶基三唑钴(II)配位化合物,[Co(3,3′-Hbpt)2(H2pm)(H2O)2]·2H2O(1),[Co(4,4′-Hbpt)(pm)0.5(H2O)]·3H2O(2)和[Co(3,4′-Hbpt)(pm)0.5(H2O)3]·2H2O(3)(其中3,3′-Hbpt为3,5-二(3-吡啶)-1氢-1,2,4-三唑,4,4′-bpt为3,5-二(4-吡啶)-1氢-1,2,4-三唑,3,4′-Hbpt为3-(3-吡啶)-5-(4′-吡啶)-1氢-1,2,4-三唑,H4pm为均苯四酸).通过元素分析、红外、热重以及单晶X射线衍射等技术手段对化合物进行了表征.结构分析表明,在化合物1中,H2pm2-以双单齿模式桥连相邻的金属离子形成一维的链,链与链之间进而通过3,3′-Hbpt与羧酸基团构成的O?H…N氢键作用形成了一个二维层状结构;化合物2呈现出具一维通道的三维结构,其中,pm4?以单齿和双单齿配位模式与钴离子配位形成二维网格结构,相邻的层之间再通过Hbpt连接形成三维的开放式结构;在化合物3中,钴离子与3,4′-Hbpt中的吡啶氮原子形成螺旋链,pm4?则进一步以双单齿桥连模式将相邻的螺旋链连接成一个二维结构.借助DSC技术探究了化合物1~3对高氯酸铵的热分解效应,结果发现,添加化合物1和2之后高氯酸铵热分解速率明显加快,放热量大为增加,有望成为新型含能燃烧催化剂.
Under the hydrothermal conditions, three ligands of cobalt (II) bipyridyltriazole [Co (3,3’-Hbpt) 2 (H2pm) (H2O) 2 ] · 2H2O (1), [Co (4,4’-Hbpt) (pm) 0.5 (H2O)] · 3H2O (2) and [Co · 2H2O (3) wherein 3,3’-Hbpt is 3,5-bis (3-pyridyl) -1hydro-1,2,4-triazole and 4,4’-bpt is 3,5-bis 4-pyridyl) -1 hydrogen-1,2,4-triazole and 3,4’-Hbpt is 3- (3-pyridyl) -5- Triazole and H4pm were pyromellitic acid.) The compounds were characterized by elemental analysis, IR, TG and single crystal X-ray diffraction. Structural analysis showed that in compound 1, H2pm2- Bridge adjacent metal ions to form a one-dimensional chain, chain and chain through the 3,3’-Hbpt and carboxylic acid groups O? H ... N hydrogen bond formed a two-dimensional layered structure; Compound 2 exhibits a three-dimensional structure with one-dimensional channels, in which pm4? Coordinates with cobalt ions in a monodentate and double-monodentate coordination mode to form a two-dimensional lattice structure, and adjacent layers are connected by Hbpt to form a three-dimensional Open structure; In compound 3, cobalt ion and pyridine nitrogen atom in 3,4’-Hbpt The formation of a spiral chain, pm4? Further double single-tooth bridging mode adjacent helical chain connected into a two-dimensional structure by DSC technology to explore the compound 1 ~ 3 thermal decomposition of ammonium perchlorate, found that, After compound 1 and 2 were added, the thermal decomposition rate of ammonium perchlorate was obviously accelerated and the heat release increased greatly. It is expected to be a new combustion catalyst containing energy.