Structural modulation and properties of silver(I) coordination polymers from 2,6-naphthalenedicarboxylic acid and flexible N-donor linkers

Abstract

Based on the N-donor auxiliary ligand effect, four new silver(I) coordination polymers derived from 2,6-naphthalenedicarboxylic acid (H 2 ndc), namely [Ag(L1)-(ndc) 0.5 ] n (1), [Ag(L2)(ndc) 0.5 ] n (2), {[Ag(L3)(ndc) 0.5 ]Á 0.5(H 2 ndc)} n (3), and [Ag(L4)(H 2 O)ÁHndc] n (4) (L1 = 1,3-bis(thiabendazole)butane, L2 = 4,4 0 -bis(pyrazole-1-ylmethyl)-biphenyl, L3 = 1,4-bis(benzimidazole)butane, L4 = 4,4 0 -dipyridylamine), have been synthesized by solvothermal reactions. Complex 1 possesses a 1D infinite loop and chain, which is further extended into a 3D supramolecular framework by p-p stacking interactions. Complex 2 presents an unprecedented 3D (3,4)-connected lim (baa-e-3,4-Imma) topology with the Schläfli symbol of (4.10 2 )2(4 2 .10 4 ). Complex 3 exhibits a 2D three-connected hcb (Shubnikov hexagonal plane) network and the Schläfli symbol is (6 3 ). Complex 4 shows a 1D linear chain, which generates a 2D supramolecular layer via hydrogen bonding interactions. Solid-state properties of 1-4 have also been investigated, which display high thermal stability and intense fluorescent emission in solid state. Moreover, the complexes manifest excellent catalytic activities for the decomposition of Congo red azo dye by hydrogen peroxide in a Fenton-like process.

Silver(I)–Organic Frameworks Showing Remarkable Thermo-, Solvato- And Vapochromic Phosphorescence As Well As Reversible Solvent-Driven 3D-to-0D Transformations

“…A riboflavin-functionalized cyanobenzoate Ag-LMOF was used for the emission sensing of melamine and acetoguanamine . A plethora of Ag-LMOFs exhibiting deep-blue to green fluorescence were engineered based on arene-derived di-, − tri-, − and tetracarboxylates ,− as well as N , N′ -coligands. More recently, a MOF-OLED device was fabricated utilizing a brightly fluorescent Ag­(I) 1,4-benzenedicarboxylate framework .…”

“…Moreover, these issues together with inherent lability of Ag + ion often lead to characterization or crystallization problems. Commonly, Ag-MOFs are accessed using aromatic polycarboxylates, − ethynide- − or azine-based ligands (4,4′-bipy, triazine, etc. ), ,,, and polyamines. , For the synthesis of porous Ag­(I) MOFs, polydentate N -ligands with structurally rigid aromatic spacers are usually required. − Besides, bisthioethers of RS–(X)–SR kind were employed to construct Ag­(I)-MOFs. , To our surprise, phosphines are almost neglected in this area, although they are now considered to be the most promising ligands for the design of Ag­(I) compounds, including those featuring bright thermally activated delayed fluorescence (TADF) − or phosphorescence. − It should be stressed in this regard that Ag-LMOFs typically emit intraligand fluorescence, while phosphorescence is extremely rare for these compounds. ,,, Meanwhile, phosphorescent LMOFs have unique advantages in sensing applications because of their longer decay times compared to those of promptly fluorescing LMOFs.…”

Hydrothermal Synthesis, Crystal Structure, and Optical Properties of four Supramolecular Coordination Compounds Constructed from 1,10-Phenanthroline and Polycarboxylic Acids, "Координационная химия"

“…In the recent years, more attentions were paid to the new solid-state structures involving the self-assembly of molecules into well-defined supramolecules via non-covalent, multiple intermolecular interactions, like hydrogen-bonding, π-π stacking, and metal-ligand bond formation [1,2]. Especially, the strong, selective, and directional hydrogen bonding interactions act as a most powerful organizing force in supramolecular assembly, resulting into 1D, 2D or 3D hydrogen-bonded architectures [3,4]. Usually, the self-assembly of supramolecules is also frequently inf luenced by several factors, like the organic ligands, the geometric requirements of the metal atom, the anionic counter-ions, the reaction temperature, and the solvent system effect [5][6][7].…”

“…3,4-Dicarboxyl-(3',4'-dicarboxylazophenyl)benzene (H 4 Dczpb) [15], 1,4-naphthalenedicarboxylic acid (H 2 Nda) [16,17], pyromellitic acid (H 4 Pma) [18,19] (Scheme 1) had been employed as exo-multidentate ligands for the design and construction of novel coordination polymers owing to their thermal stability and symmetry. In this paper, four supramolecular coordination compounds, namely [Cd(Phen) 2 6 ] · 2H 3 Pma · (H 2 Pma) · 2H 2 O (IV), constructed by Phen, and H 4 Dczpb, H 2 Nda, H 4 Pma with different transition metal ions (Cd 2+ , Mn 2+ , and Co 2+ ) were presented. Further, their optical properties have also been investigated in detail.…”

Syntheses and Characterization of Three Coordination Polymers of Zinc(II) and Cadmium(II) with Dicarboxylates and Bis(thiabendazole) Ligands

“…Introducing one thiazole group at the ortho-position of the coordinating N atom may optimize the photophysical property and biological activity [9,10]. Furthermore, the selection of the flexible bis(thiabendazole) ligands with different spacers is based on the following considerations: (i) the bis(thiabendazole) ligands provide more potential coordination sites, which could meet the coordination requirements of metal centers; (ii) these ligands can be regarded as bridges to build high dimensional frameworks; (iii) these ligands have diverse flexibility and conformational freedom by -(CH 2 ) n -backbones, offering different capacities for spatial extension [11][12][13]. So far as we know, there has little if anything been mentioned about CPs based on flexible bis(thiabendazole) ligands according to the Cambridge Structural Database (version 5.37, Feb 2016 plus 1 update) [14].…”