Noncovalently‐bonded 2D‐3D Metal‐organic Frameworks via Assembly of Zn(Ac)₂ with 3, 5‐Dimethylpyrazole and Carboxylate Ligands

Abstract

Four zinc(II) complexes, namely, Zn(Hdmpz) 2 (L1) 2 (1) (Hdmpz = 3,5-dimethylpyrazole, HL1 = trichloroacetic acid), Zn(Hdmpz) 2 (L2) 2 (2) (HL2 = 2,4-dichlorophenoxyacetic acid), [Zn 2 (μ-dmpz) 2 (Hdmpz) 2 (L3) 2 ] (3) (HL3 = 1-naphthylacetic acid), and [Zn(Hdmpz) 2 (L4) 2 ]·H 2 O (4) (HL4 = indole-3-acetic acid) were prepared and structurally characterized by different techniques including elemental analysis, IR spectroscopy, TG, and single-crystal X-ray diffraction analysis. The complexes display 2D to 3D structures with tetrahedral to pentagonal coordination around the central zinc atom. The X-ray studies suggested that 1, 2, and 4 are mononuclear complexes, whereas 3 is a centrosymmetric dinuclear complex. The pyrazole li-

Metal Complexes with Naphthalene-Based Acetic Acids as Ligands: Structure and Biological Activity

“…During these steps, the gradual loss of the ligands took place resulting in the formation of the corresponding metal oxide as the final product. In most cases, the mass losses found experimentally from the respective thermogravimetric curves were in good agreement with the theoretically calculated mass losses [45,47,48,70,84,85,87,93].…”

“…In all of these complexes, the 1-naphthylacetato, 2-naphthylacetato, naproxen and 1-pyreneacetato ligands are the principal bridging ligands and, in some cases, other bridging co-ligands (µ-O and µ-OH) are also present [35,48,[65][66][67][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84]. The exception of [Zn 2 (µ-dmpz) 2 (Hdmpz) 2 (N1A-O) 2 ] should be noted, where the dmpz −1 (Hdmpz = 3,5dimethylpyrazole) co-ligands have the bridging role between the two Zn(II) and the N1A −1 ligands are terminal monodentate ligands [85].…”