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以叠氮和吡嗪酸为配体,通过溶剂热合成方法,合成了两例Mn(II)配位聚合物{[Mn(L)(N3)]·CH3OH}n(1)和[Mn(L)(N3)]n(2),其中L为吡嗪酸。晶体结构表明,配合物1晶体结晶于正交晶系P2_12_121空间群,晶胞参数是a=0.86464(17)nm,b=1.0325(2)nm,c=1.0720(2)nm。配合物2晶体结晶于单斜晶系P21/c空间群,晶胞参数是a=1.1755(2)nm,b=0.97000(19)nm,c=0.65261(13)nm,β=100.23(3)°。配合物1是由叠氮和吡嗪酸根共同连接Mn(II)形成三维结构,而配合物2则是由叠氮和吡嗪酸根共同连接Mn(II)先形成二维结构,而后二维层之间过π-π堆积形成三维超分子结构。造成这种结构上的差别仅仅是由于使用的金属盐的阴离子不同。
Abstract：Two azido-Mn(II) coordination polymers {[Mn(L)(N3)]·CH3OH}n(1) and [Mn(L)(N3)]n(2)(L=pyrazinyl acid) with pyrazinyl acid as coligand were synthesized and structurally characterized. Results of single-crystal X-ray diffraction analysis showed that complex 1 crystallized in the orthorhombic P2_12_121 space group [a=0.86464(17) nm,b=1.0325(2) nm,c=1.0720(2) nm]. And complex 2 crystallized in the monoclinic P21/c space group [a=1.1755(2) nm,b=0.97000(19) nm,c=0.65261(13) nm,β=100.23(3)°]. In complex 1,adjacent Mn(II)s were linked by azide and pyrazinyl acid to form a three-dimensional(3D) structure. However,in complex 2,each Mn(II) was coordinated by azide and pyrazinyl acid to form a two-dimensional(2D) layer,then the 2D layers were further packed by π-π force to form the 3D structure. The different structure between two complexes could due to the different anions.
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基本信息:
DOI：10.16026/j.cnki.iea.2015060531
中图分类号:O641.4
引用信息:
[1]张晓红,陈振玲,刘凤娟,等.基于叠氮/吡嗪酸混合体系构筑的Mn(II)配位聚合物及其结构多样性研究[J].离子交换与吸附,2015,31(06):531-540.DOI:10.16026/j.cnki.iea.2015060531.
基金信息:
国家质量监督检验检疫总局质检公益性行业科研专项(No.201310067);国家质量监督检验检疫总局科技计划项目(No.2014IK276)