以2-氨基对苯二甲酸根离子(AT)为配体,合成了3个结构新颖的镉配位聚合物:[Cd(AT)(H2O)]n(1)、[Cd(AD(Py)]n(2)NI[Cd(AD(BPP)]n(3)(AT=2-氨基对苯二甲酸根离子,Py=吡啶,BPP=1,3-二(4-吡啶基)丙烷)。晶体结构表明,随着辅助配体的改变,AT表现出3种不同的配位模式,分别形成rt1(1)、ths(2)和sql(3)3种不同的拓扑结构。由于分子内/分子间氢键、芳香环之间的π…π堆积与C—H…π相互作用,使得3个化合物展现出较好的热稳定性。
Three cadmium coordination polymers, named as [Cd(AT)(H2O)]n (1), [Cd(AT)(Py)]n (2) and [Cd(AT) (BPP)], (3) (AT=2-aminoterephthalate, Py=pyridine, BPP= 1,3-bi(pyridin-4-yl)propane), have been synthesized based on 2-aminoterephthalic acid. The crystal structures indicate that 2-aminoterephthalate exhibits three different coordination modes in these compounds due to different auxiliary ligands, resulting in rtl (1), ths (2) and sql (3) topology, respectively. They display good thermal stability due to intermolecular/intramolecular hydrogen bonding, π--π stacking and C-H...π interactions within the framework. CCDC: 896933, 1; 896934, 2; 896935, 3.