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Self‐Assembly of Zn II /Cd II /Pb II Coordination Polymers with a Tripodal Ligand Derived from Aromatase Inhibitor Letrozole Derivative
Author(s) -
Si JinPing,
Wang WenJing,
Chang Jun,
Huang KunLin,
Zhang ZhiHui,
Chen ShengChun,
He MingYang,
Chen Qun
Publication year - 2020
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201900361
Subject(s) - thermogravimetric analysis , crystallography , ligand (biochemistry) , polymerization , chemistry , crystal structure , single crystal , metal ions in aqueous solution , derivative (finance) , polymer , metal , organic chemistry , receptor , financial economics , economics , biochemistry
Reactions of the aromatase inhibitor letrozole derivative 4,4'‐(1H‐1,2,4‐triazol‐1‐yl)methylene‐bis(benzonic acid) (H 2 tzmb) with Zn II , Cd II , or Pb II salts under similar conditions resulted in the generation of three coordination polymers, namely, {[Zn(tzmb)(H 2 tzmb)] · H 2 O} n ( 1 ), [Cd(tzmb)(H 2 O) 2 ] n ( 2 ), and {[Pb(tzmb)(H 2 O)] · 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 6 3 ‐ hcb layers, and complex 2 exhibits a flat 2D 4.8 2 ‐ 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.