Two 3D Zn(II) networks based on 1,4-bis(2-methylimidazol-1-ylmethyl)-2,3,5,6-tetramethylbenzene (bmimx), namely, {[Zn 4 (m 4 -O)(m 2 -H 2 O)(1,3,5-BTC) 2 (bmimx)]·H 2 O} n (1) and {[Zn 2 (m 2 -OH)(1,2,4-BTC)(bmimx)(H 2 O)]·2.5H 2 O} n (2) (1,3,5-H 3 BTC = 1,3,5-benzenetricarboxylic acid, 1,2,4-H 3 BTC = 1,2,4-benzenetricarboxylic acid) have been prepared at hydrothermal condition by varying the benzenetricarboxylic ligands. Single-crystal X-ray diffraction indicates that complex 1 shows a (3,8)-connected net based on tetranuclear zinc(II) clusters; complex 2 shows a 8-connected framework based on 18-membered tetranuclear zinc(II) macrometallacycles. The results indicate that benzenetricarboxylic ligands have an important effect on the stuctural characters and ultimate frameworks. Moreover, the photoluminescence properties of the two complexes were studied in the solid state at room temperature.[a] Dr.
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