一维链状氰基桥联配合物Mn(bpac)_2(H_2O)_2M(CN)_4(bpac=bis(4-pyridyl)acetylene;M=Pt,Pd)的合成、结构与热稳定性

Synthesis,structures and thermal stabilities of two cyano-bridged one-dimensional complexes Mn(bpac)_2(H_2O)_2M(CN)_4(bpac=bis(4-pyridyl)acetylene;M=Pt,Pd)

将过渡金属离子Mn^(2+)与柱状配体bis(4-pyridyl)acetylene(bpac)和[M(CN)_4]^(2-)(M=Pt,Pd)通过缓慢扩散法进行组装反应,得到了两个一维链状氰基桥联配合物Mn(bpac)_2(H_2O)_2M(CN)_4(M=Pt(1),Pd(2)).单晶X射线衍射分析表明:配合物1和2为同构体,均属三斜晶系,空间群P1.其非对称单元由1个[Mn(bpac)_2(H_2O)_2]^(2+)阳离子和1个[M(CN)_4]^(2-)阴离子组成,Mn和M中心分别处于六配位的八面体和四配位的平面四方构型之中,两者通过氰基交替连接形成无限延伸的一维直线链.同时,文中研究了配合物1的热稳定性.

Two new one-dimensional（ 1D） complexesMn（bpac）2（H2O）2M（CN）4（bpac=bis（4-pyridyl）acetylene;M=Pt,Pd）） were synthesized by the self-assembly reactions of Mn2＋ion,pillar ligand bpac and[M（ CN）4]2-（ M = Pt,Pd）. Single-crystal X-ray diffraction analysis revealed that complexes 1 and 2 are isostructural and they belong to triclinic space group P1. The asymmetric unit of both complexes consist of one [Mn（ bpac）2（ H2O）2]2 ＋cation and one [M（ CN）4]2-anion. The Mn and M centers adopt six-coordinated octahedral and four-coordinated planar square geometries,respectively. [Mn（ bpac）2（ H2O）2]2＋and [M（ CN）4]2-units are linked alternatively to generate a 1D linear chain. In addition,the thermal stability of complex 1 was also investigated.