High and selective sorption of C2 hydrocarbons in heterometal-organic frameworks built from tetrahedral units

Alternate connection of tetrahedral [In(COO)(4)](-) and [AgN4](+) (or [CuN4](+)) units via nicotinate ligands leads to the formation of two metal-organic frameworks (MOFs) based on packing layers. The activated framework shows high C-2 hydrocarbons (C(2)s) uptake and high selectivities of C(2)s/CH4.