Metal-organic frameworks constructed from pentagonal antiprismatic and cuboctahedral secondary building units

Two crystalline metal-organic frameworks formulated as Zn-6(NDC)(5)(OH)(2)(DMT)(2). 4DMF, MOF-48, and Zn-7(m-BDC)(6)(OH)(4)(H2O)(2). 6DMF . 4H(2)O, MOF-49, (NDC = 1,4-naphthalenedicarboxylate; m-BDC = 1,3-benzenedicarboxylate) have been synthesized and fully characterized by single crystal X-ray diffraction studies, which reveal that the frameworks are constructed from pentagonal antiprismatic (MOF-48) and cuboctahedral (MOF-49) secondary building units respectively, however, both are reticulated into 3-D structures having the B network of CaB6.