CAU-1 and CAU-2: New tubular alkali metal–organic framework materials, A3[C6H3(CO2)(CO2H0.5)(CO2H)]2 (A = K or Rb)

Abstract

Two new tubular alkali metal–organic framework materials, A₃[C₆H₃(CO₂)(CO₂H_0.5)(CO₂H)]₂ (A = K or Rb) have been synthesized through solvothermal reactions using NH₄F, 1,3,5-C₆H₃(CO₂H)₃, ANO₃, and N,N-Dimethylformamide at 180 °C. Single-crystal X-ray diffraction was used to determine the structures of the reported materials. A₃[C₆H₃(CO₂)(CO₂H_0.5)(CO₂H)]₂ have novel tubular structures consisting of channels of AO₆ and AO₈ alkali metal oxide groups as well as the benzenetricarboxylate organic linker. Detailed structural analyses with full characterization including infrared spectra, thermogravimetric analyses, and elemental analyses are reported.