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以3,5-二(吡啶-4-甲氧基)苯甲酸(HL)与芳香二羧酸为配体,在水热条件下与Zn(Ⅱ)或Cd(Ⅱ)盐反应得到4个具有3,4-连接多重穿插结构的配位聚合物:[Zn_2L_2(tdc)]_n(1),{[Zn_4L_4(Hhdc)_2]·H_2O}n(2),{[Zn_2L_2(Hhdc)]·H_2O}n(3),{[Cd_2L_2(bdtc)(H_2O)]·0.5H_2O}n(4)(H_2tdc=2,5-噻吩二甲酸,H_3hdc=5-羟基间苯二甲酸,H_2bdtc=1,4-苯二硫乙酸)。晶体结构分析表明,聚合物1~3具有3,4-连接四重穿插的三维网络结构,拓扑符号分别为(4.82)(4.85)(1)、(63)(65.8)(2)和(63)(65.8)(3)。4为3,4-连接三重穿插的二维平面结构,拓扑符号为(6~3)(6~6)。测定了配位聚合物1、3和4的热稳定性和荧光性质。
The reaction of 3,5-bis (pyridin-4-methoxy) benzoic acid (HL) with aromatic dicarboxylic acid as a ligand under hydrothermal conditions with Zn (Ⅱ) or Cd (Ⅱ) 3,4-coordination polymers with multiple interspersed structures: [Zn_2L_2 (tdc)] _n (1), {[Zn_4L_4 (Hhdc) _2] · H_2O} n (2) and {[Zn_2L_2 (Hhdc)] · H_2O } H (3), {[Cd_2L_2 (bdtc) (H_2O)] · 0.5H_2O} n (4) (H_2tdc = 2,5-thiophene dicarboxylic acid, H_3hdc = 5-hydroxyisophthalic acid, H_2bdtc = 1,4 - benzene dithioacetic acid). The crystal structure analysis shows that polymers 1 to 3 have three-dimensional network structures of 3,4-junctions and 4-junctions, the topological symbols are (4.82) (4.85) (1), (63) (65.8) and ) (65.8) (3). 4 is a three-dimensional interlaced three-dimensional planar structure with 3,4-connections. The topological symbols are (6 ~ 3) (6 ~ 6). The thermal stability and fluorescence properties of coordination polymers 1, 3 and 4 were determined.