Co(OAc)2·4H2O的反应,N'N'-双(3-吡啶基甲基)草酰胺(L)和4,4'-磺酰基二苯甲酸(H2SDA)提供了具有相同混合配体的四种配位聚合物,{[Co(L)(SDA)(H2O)2]·H2O·CH3OH}n,1,{[Co(L)0.5(SDA)]·2H2O·0.5L}n,2,{[Co(L)1.5(SDA)(H2O)]·H2O}n,3,和{[Co2(L)1.5(SDA)2(H2O)2]·4H2O}n,4,其已经使用单晶X射线晶体学进行了结构表征。配合物1-4是2D层,揭示SQL的拓扑,2,6L1,(4,4)Ia,和6L12,分别并证明了金属与配体的比例,溶剂系统,和反应温度是决定结构多样性的重要因素。将这些配合物浸入各种溶剂中表明,结构类型决定了1-4的化学稳定性。络合物1和2在溶剂去除和吸附后显示出可逆的结构转变,而3和4是不可逆的。
Reactions of Co(OAc)2·4H2O, N\'N\'-bis(3-pyridylmethyl)oxalamide (L) and 4,4\'-sulfonyldibenzoic acid (H2SDA) afforded four coordination polymers with the same mixed ligands, {[Co(L)(SDA)(H2O)2]·H2O·CH3OH}n, 1, {[Co(L)0.5(SDA)]·2H2O·0.5L}n, 2, {[Co(L)1.5(SDA)(H2O)]·H2O}n, 3, and {[Co2(L)1.5(SDA)2(H2O)2]·4H2O}n, 4, which have been structurally characterized using single-crystal X-ray crystallography. Complexes 1-4 are 2D layers, revealing topologies of sql, 2,6L1, (4,4)Ia, and 6L12, respectively, and demonstrating that the metal-to-ligand ratio, solvent system, and reaction temperature are important in determining the structural diversity. The immersion of these complexes into various solvents shows that the structural types govern the chemical stabilities of 1-4. Reversible structural transformation is shown for complexes 1 and 2 upon solvent removal and adsorption, while those of 3 and 4 are irreversible.