Effect of Benzenetricarboxylic Ligands on the Construction of Zn(II) Coordination Polymers Based on a Flexible Imidazole‐Based Ligand

Abstract

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.

Experimental Determination of the Standard Enthalpy of Formation of Trimellitic Acid and Its Prediction by Supervised Learning

“…On the other hand, the chemical environment causes hydrogen bonds to have different strengths and directionalities. Consequently, TMAc derivatives along with different metals such as Cd, Zn, Al, and La are frequently used as synthetic blocking in supramolecular architectures (metal–organic frameworks; MOFs). These MOFs may present magnetic and luminescence properties, − and their structure and topology can be controlled through the TMAs’ derivatives concentration, the solvents, and metals involved in their synthesis. , TMAc toxicity have been subject of human health research, wherein it has been found that TMAc may cause respiratory disorders as well as allergies.…”

A Zinc(II) Coordination Polymer Based on a Chain of {Zn2O7} Bitetrahedra Bridged by 3‐Methoxybenzoates

“…[8][9][10][11][12][13][14][15][16][17] The structures of several dinuclear Zn(II) carboxylates with bridging hydroxo ligand are archived in the Cambridge structural database (CSD). [21] An analysis of more than forty structures retrieved from the CSD (Table S1) reveals that a majority of these compounds are prepared hydrothermally using hydrated zinc(II) salts like zinc acetate, [22][23] zinc nitrate, [24][25] zinc chloride [26][27] etc. as the zinc(II) source.…”