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Two new metal-organic frameworks(MOFs),[Cu2(H_2O)_2(BCPIA)](BUT-20)and(Me_2NH_2)[In(BCPIA)](BUT-21)were designed and synthesized through the solvothermal reaction between a newly created desymmetric 4-connected ligand,5-(2,6-bis(4-carboxyphenyl)pyridin-4-yl)isophthalic acid(H_4BCPIA)and Cu(NO_3)2 2.5H_2O or In(NO_3)_3·5H_2O,respectively,and characterized by single-crystal and powder Xray diffraction,thermogravimetric analysis,infrared spectroscopy,and elemental analysis.The two MOFs have three-dimensional structures,in which both the BCPIA 4 ligand and metal-containing entities,Cu_2(COO)_4(H_2O)_2 and In(COO)_4 act as 4-connected nodes.However,different linkage configurations of the two metal-containing nodes,quadrilateral Cu_2_TD_2(COO)_4(H_2O)_2and tetrahedral In(COO)_4,lead to distinct structural networks of BUT-20 and 21,with Nbo and Unc topologies,respectively.
(BUT-20) and (Me_2NH_2) [In (BCPIA)] (BUT-21) were designed and synthesized through the solvothermal reaction between a (H_4BCPIA) and Cu (NO_3) 2 2.5H_2O or In (NO_3) _3 · 5H_2O, respectively, and the newly created desymmetric 4-connected ligand 5- , and characterized by single-crystal and powder Xray diffraction, thermogravimetric analysis, infrared spectroscopy, and elemental analysis. two MOFs have three-dimensional structures, in which both BCPIA 4 ligand and metal- containing entities, Cu_2 (COO) H_2O) _2 and In (COO) _4 act as 4-connected nodes. Even, different linkage configurations of the two metal-containing nodes, quadrilateral Cu_2_TD_2 (COO) _4 (H_2O) _2 and tetrahedral In (COO) _4, lead to distinct structural networks of BUT-20 and 21, with Nbo and Unc topologies, respectively.