Abstract

Four new coordination polymers, namely [Cd(OBA)(H₂O)₃]_n (1), [Zn₂(OBA)₂(PBHB)₂]_n (2), [Mn(OBA)(BBHB)₂]_n (3), and [Co(MIP)(BPP)]_n (4) (H₂OBA = 4-oxyacetate-benzoic acid, PBHB = 1,1′-(1,3-propanediyl)bis-1H-benzimidazole, BBHB = 1,1′-(1,4-butanediyl)bis-1H-benzimidazole, H₂MIP = 5-methylisophthalic acid, and BPP = 1,3-bis(4-pyridyl)propane)), were prepared and structurally characterized by single-crystal X-ray diffraction. In complex 1, the Cd(II) atoms are bridged by OBA²⁻ anions to give 1D zigzag chain, and the 1D chains are stacked into 2D network through the O–H–O hydrogen bonds. The Mn(II) and Zn(II) centers in 2 and 3 are connected by OBA²⁻ anions to form 1D chains, which are further bridged by N-donor ligands to generate 2D layer. Complex 4 shows twofold 3D interpenetrating network. Furthermore, the fluorescence of complexes 1 and 2 and magnetic properties of 3 and 4 have also been investigated.

摘要

四种新型配位聚合物，即[Cd(OBA)(H ₂ O) ₃ ] _n ( 1 )、[Zn ₂ (OBA) ₂ (PBHB) ₂ ] _n ( 2 )、[Mn(OBA)(BBHB) ₂ ] _n ( 3 ) 和 [Co(MIP)(BPP)] _n ( 4 ) (H ₂ OBA = 4-羟基乙酸酯-苯甲酸，PBHB = 1,1'-(1,3-丙二基)双-1H-苯并咪唑, BBHB = 1,1'-(1,4-丁二基)bis-1H-苯并咪唑, H ₂制备了 MIP = 5-甲基间苯二甲酸和 BPP = 1,3-双（4-吡啶基）丙烷）），并通过单晶 X 射线衍射对其进行了结构表征。在配合物1 中，Cd(II) 原子被 OBA ²⁻阴离子桥接形成一维锯齿形链，一维链通过 O-H-O 氢键堆叠成二维网络。2和3中的 Mn(II) 和 Zn(II) 中心通过 OBA ²⁻阴离子连接形成一维链，这些链被 N 供体配体进一步桥接以生成二维层。复合体4显示了双重 3D 互穿网络。此外，复合物的荧光1和2和磁特性3和4也被调查。