Coordination polymers of a multipyridyl and pyrazolyl ligand with conformational flexibility: syntheses, structures and luminescence
作者:Caixia Ding、Xing Rui、Cheng Wang、Yongshu Xie
DOI:10.1039/c3ce42147c
日期:——
“U” shaped conformation. For complex 7, the bppa unit of L chelates a Co(II) atom, and a pyridyl nitrogen of the 4,4′-dpa unit bridges another Co(II) atom, thus affording a 1D chain structure. Similar to that observed in 7, each L ligand in complex 8 links two Cu(II) ions, and a μ1,3-azide further bridges two Cu(II) ions from neighbouring chains, affording a 2D undulated layer, which is interpenetrated
在这项工作中,我们设计并合成了一种新型配体N,N-双(6-(1 H-吡唑基)2-吡啶基)-N ',N'-双(4-吡啶基)1,4-苯二胺(L)。d 10种金属Co(II)和Cu(II)与L的配位生成八种新型配位聚合物[ZnLCl 2 ] n(1),[ZnLBr 2 ] n(2),[ZnLI 2 ] n(3), [CdL 2 Cl 2 ]n(4),[CdL 2 Br 2 ] n(5),[CdLI 2 ] n(6),[CoL(SCN)](ClO 4)} n ·1.5nDMF·0.5nH 2 O(7)和[Cu 2 L 2(N 3)]·3ClO 4 } n(8)。单晶X射线衍射分析表明,配合物1-3和6是同构的。在这些配合物中,配体L利用其4,4'-dpa部分的两个吡啶氮原子桥接金属离子,提供1D之字形链,它们通过分子间C–H⋯π和氢键相互作用进一步连接,从而形成3D超分子结构。配合物4和5具有同构的一维双链结构。在d