Self-Assembly of ZnII/CdII/PbII Coordination Polymers with a Tripodal Ligand Derived from Aromatase Inhibitor Letrozole Derivative |
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| Authors: | Jin-Ping Si Wen-Jing Wang Jun Chang Kun-Lin Huang Zhi-Hui Zhang Sheng-Chun Chen Ming-Yang He Qun Chen |
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| Affiliation: | 1. Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, 213164 Changzhou, P. R. China;2. College of Chemistry, Chongqing Normal University, 401331 Chongqing, P. R. China |
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| Abstract: | Reactions of the aromatase inhibitor letrozole derivative 4,4'-(1H-1,2,4-triazol-1-yl)methylene-bis(benzonic acid) (H2tzmb) with ZnII, CdII, or PbII salts under similar conditions resulted in the generation of three coordination polymers, namely, {[Zn(tzmb)(H2tzmb)] · H2O}n ( 1 ), [Cd(tzmb)(H2O)2]n ( 2 ), and {[Pb(tzmb)(H2O)] · DMF}n ( 3 ), respectively. Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction, and thermogravimetric analyses. Complex 1 features a twofold 2D → 2D interpenetrated network based on corrugated 63- hcb layers, and complex 2 exhibits a flat 2D 4.82- fes network, whereas complex 3 presents a 3D hex net based on infinite rod-shaped secondary building units. The remarkable structural diversity may illustrate the powerful effect of metal ions on coordination assemblies. The spectroscopic, thermal, and photoluminescent properties of complexes 1 – 3 were investigated. In addition, the catalytic activity of 1 in the solvent-free ring-opening polymerization of ε-caprolactone was also discussed. |
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| Keywords: | Coordination polymer Metal-regulated assembly Letrozole derivative Structure elucidation Luminescence |
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