A family of microporous and acid–base Ln-MOFs (1-Ln, Ln = Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) has been synthesized from the H3NTB ligand. 1-Ln can efficiently catalyze both cycloaddition of epoxides with CO2 and one-pot cascade deacetalization–Knoevenagel reactions.

A robust and porous titanium metal-organic framework (Ti-MOF; LCU-402) has been hydrothermally synthesized through combining tetranuclear Ti2Ca2(μ3-O)2(μ2-OH2)1.3(H2O)4(O2C-)8 cluster and tritopic 1,3,5-benzene(tris)benzoic (BTB) ligand. LCU-402 shows remarkable stability and permanent porosity...