UoC-7: A Bimetallic K-Zn-MOF with an Anionic Framework Based on Fluorinated Trimesate Ligands Exhibiting a Large CO Uptake.

In solvothermal reactions of Zn(NO)×6HO with K(HmF-BTC) or K(HdF-BTC) in DMF/ethanol or DMA/ethanol solvent mixtures, single crystals of the MOFs UoC-7(1F) and UoC-7(2F) were obtained crystallizing in the hexagonal space group P6/m (no. 176) (HBTC: 1,3,5-benzenetricarboxylic acid; mF-/dF: mono-/difluoro; DMF: N,N-dimethylformamide; DMA: N,N-dimethylacetamide; UoC: University of Cologne). According to the general composition [(CH)NH][KZn(mF-/dF-BTC)(HO)]×solvent, UoC-7 consists of an anionic bimetallic framework.