Abstract

Two isoreticular metal-organic frameworks (MOFs) constructed from M8(OH)4(H2O)2(pyz)12 (M = Co, Ni; pyz = pyrazolate) secondary building units (SBUs) and Ni(salen)-derived metalloligands were synthesized. The two MOFs were found to be highly stable in a wide pH and temperature range. Together with the tetrabutylammonium bromide (TBAB) co-catalyst, they catalysed the cycloaddition of CO2 to epoxides with near-quantitative yields and easy recyclability for at least 11 cycles.

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