Structure, topology and property of metal-organic frameworks with pyridine-3,5-bis(phenyl-4-carboxylate) and varied metal centers

• Metal complexes with pyridine-3,5-bis(phenyl-4-carboxylate) have been obtained.
• The complexes show different framework structure and topology.
• Photoluminescence and sorption property of the complexes were investigated.

Four new metal-organic frameworks {[Zn(L)]·2.6H2O}n (1), [Cd(L)(H2O)(DMA)]n (2), [Co3(L)2(HCOO)2(H2O)2]n (3) and {[Mn(L)(H2O)]·DMF}n (4) [H2L = pyridine-3, 5-bis(phenyl-4-carboxylic acid), DMA = N,N-dimethylacetamide, DMF = N,N-dimethylformamide] have been synthesized and characterized by single crystal and powder X-ray diffractions, IR and thermogravimetric analyses. 1 is a three-dimensional (3D) framework with {46·64} topology, while 2 is a 3D framework formed by parallel/parallel inclined interpenetration of two-dimensional (2D) networks with {63} topology. 3 processes a 3D framework structure with point symbol of {4·82}2{42·812·10}, and 4 shows bilayer structure with {43·63} topology, which is further assembled into a 3D supramolecular architecture by hydrogen bonding interactions. Gas adsorption property of 1, 2 and 4, photoluminescence of 1 and 2 as well as magnetic property of 4 were investigated.

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