Abstract
Metal-organic frameworks (MOFs) are coordination polymers with potential voids constructed by organic ligands and metal ions. In this work, we employed a semi-rigid polycarboxylic acid ligand 5-(4-carboxyphenoxy)methyl)benzene-1-thio-3-dicarboxylic acid (H3L) with the flexible “–CH2-O-” group between the two phenyl groups to construct a new Cu(II)-MOF {[Cu2L(OH)]·DMF}n (1). The structure analysis reveals that the adjacent Cu(II) cations are bridged by oxygens from OH– anion and carboxy group to get a one dimensional infinite rod-shaped secondary building unit (SBU). Furthermore, compound 1 exhibits an intriguing three-dimensional MOF based on infinite rod-shaped SBUs and L3-. PXRD result shows compound 1 is still stable after placed in air for three months. The variable-temperature magnetic studies indicate antiferromagnetic behaviors of 1.
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