Self-assembly of metal–organic coordination polymers occurs because of enthalpically favorable interactions. In the case of the bulky 4,4′-(anthracene-9,10-diyl)dibenzoic acid ligand (abdH2), we demonstrate that the presence of numerous π–π and C—H...π interactions outweigh the formation of saturated coordination complexes with zinc, leading to the formation of a dimethylformamide (DMF) solvate, namely 4,4′-(anthracene-9,10-diyl)dibenzoic acid dimethylformamide disolvate, C28H18O4·2C3H7NO or [(abdH2)(DMF)2], at low concentrations of zinc. Meanwhile, at higher zinc concentrations, the abdH2 ligand gives rise to the nonporous one-dimensional coordination polymer catena-poly[[bis(dimethylformamide-κO)zinc(II)]-μ-4,4′-(anthracene-9,10-diyl)dibenzoato-κ2
O:O′], [Zn(C28H16O4)(C3H7NO)2]
n
or [Zn(abd)(DMF)2]
n
, when assembled in dimethylformamide, while a related compound is observed when N,N-dimethylacetamide (DMA) is used as the solvent, namely catena-poly[[[bis(N,N-dimethylacetamide-κO)zinc(II)]-μ-4,4′-(anthracene-9,10-diyl)dibenzoato-κ2
O:O′] N,N-dimethylacetamide monosolvate], [Zn(C28H16O4)(C4H9NO)2]·C4H9NO}
n
or [Zn(abd)(DMA)2]·DMA}
n
. Attempts to use other amide-based solvents did not give rise to any other assembled structures.
金属有机配位聚合物的自组装是由于焓上有利的相互作用而发生的。以体积庞大的 4,4′-(蒽-9,10-二基)二苯甲酸配体 (abdH2) 为例,我们证明了大量 π-π 和 C-H...在锌浓度较低的情况下,π 相互作用超过了与锌形成饱和配位络合物的作用,从而形成二甲基甲酰胺(DMF)溶胶,即 4,4′-(蒽-9,10-二基)二苯甲酸二甲基甲酰胺二溶胶,C28H18O4-2C3H7NO 或 [(abdH2)(DMF)2] 。同时,在锌浓度较高时,abdH2 配体会生成无孔一维配位聚合物 catena-poly[[双(二甲基甲酰胺-κO)锌(II)]-μ-4,4′-(蒽-9,10-二基)二苯甲酸-κ2
O:O′]、[锌(C28H16O4)(C3H7NO)2]
n
或 [Zn(abd)(DMF)2] n
n
或[Zn(abd)(DMF)]2 n,在二甲基甲酰胺中组装,而当使用 N,N-二甲基乙酰胺(DMA)作为溶剂时,可以观察到一种相关的化合物,即 catena-聚[[[双(N,N-二甲基乙酰胺-κO)锌(II)]-μ-4,4′-(蒽-9,10-二基)二苯并-κ2
O:O′] N,N-二甲基乙酰胺N,N-二甲基乙酰胺单溶液],[Zn(C28H16O4)(C4H9NO)2]-C4H9NO}-N,N-二甲基乙酰胺单溶液
n
或[Zn(abd)(DMA)2]-DMA} n
n
.尝试使用其他酰胺基溶剂也没有产生任何其他组装结构。