Two distinct Dy-isophthalates induced by different solvents

Two distinct Dy-isophthalates, [Dy4(m-BDC)6(H2O)4(DMF)]n⋅2n(H2O)⋅n(DMF) 1 and [Dy2(m-BDC)3(H2O)(DMA)]n⋅3n(H2O)⋅2n(DMA) 2 (DMF = N,N′-Dimethylformamide, DMA = N,N′-Dimethylacetamide), which were induced by different solvents under the same hydrothermal conditions, were obtained. Single-crystal analysis revealed that compounds 1 and 2 feature two-dimensional (2D) layer structure with opened widows occupied by guests (DMF for 1 and DMA for 2). In addition, a rare hybrid [(H2O)3(DMA)2] pentamer was found in 2. Furthermore, thermal analyses of 1–2 were also investigated.

► Two distinct Dy-isophthalates were successfully synthesized through controlling different reaction solvents.
► Both compounds feature a two-dimensional (2D) layer structure with the opened windows occupied by the guest molecules.
► A rare hybrid [(H2O)3(DMA)2] pentamer was found in compound 2.