Glycols in the Synthesis of Zinc-Anilato Coordination Polymers

Abstract

We report the synthesis, structural investigation, and thermal behavior for three zinc-based 1D-coordination polymers with 3,6-di-tert-butyl-2,5-dihydroxy-p-benzoquinone, which were synthesized in the presence of different glycols. The interaction of zinc nitrate with glycols, followed by using the resulting solution in solvothermal synthesis with the anilate ligand in DMF, makes it possible to obtain linear polymer structures with 1,2-ethylene or 1,2-propylene glycols coordinated to the metal. The reaction involving 1,3-propylene glycol under similar conditions gives a crystal structure that does not contain a diol. The crystal and molecular structures of the synthesized compounds were determined using single crystal by X-ray structural analysis. The influence of glycol molecules coordinated to the metal on the thermal destruction of synthesized compounds is shown.

Structural diversity of cadmium coordination polymers based on an extended anilate-type ligand

“…[11][12][13][14][15][16][17][18][19] Several factors influence the formation of coordination polymers with different structures and topologies. These include the substitution of the aromatic ring of the anilate ligand with various substituents; 20 the use of different solvents to synthesize CPs, [21][22][23][24][25][26][27] or the directed substitution of the coordinated solvent at the metal atom; 28 the construction of homo-and heterometallic systems; 14,23,[29][30][31][32][33][34] the introduction of additional "counterions" during framework formation, 12,[35][36][37][38] and the use of additional neutral ligands. [39][40][41][42][43][44][45] This results in the preparation of versatile derivatives with a wide range of potential applications in various fields.…”

“…Coordination polymerbased materials can serve as gas adsorbents, [46][47][48] luminescent agents, 9,49 electrochemical or photophysical sensors, 4,50 and electroconductive 5,[51][52][53][54][55][56][57][58] and magnetic materials. 29,59,60 The creation of new anilate-type ligands for the synthesis of CPs, 3,44,59 as well as the preparation of mixed-ligand CPs containing two anionic ligands, 49,[61][62][63][64][65][66][67] is a promising area of research, as it opens the possibility of synthesizing compounds with new topologies and properties. One of the prospective ditopic ligands for the synthesis of new derivatives is the closest analog of anilate ligands containing an extended π-system -4,4′-(1,4-phenylylenebis(azanylylidene))bis (3,6-di-tertbutyl-2-hydroxycyclohexa-2,5-dienone) (H 2 L).…”