Structural diversity and fluorescent properties of CdII coordination polymers with 5-halonicotinates regulated by solvent and ligand halogen-substituting effect

Fluorine‐Substituted Ligands Induce Structural Diversity of Coordination Compounds

“…Indeed they employ HL OMe and HL OEt ligands, where L OR is N,N′‐ethylenebis(3‐Alkoxysalicylaldimine), in heterometallic copper(II)−tin(II/IV) systems and compare final eight complexes . Furthermore, Du and co‐worker prepare a series of complexes from CdCl 2 and 5‐fluoro/chloronicotinic acid ligands in different solvents and study substitution changes together with solvent effect . In the other paper, several complexes of Zn(II) coordination polymers based on bis‐imidazolyl and 5‐R‐1,3benzenedicarboxylate ligands are synthesized and the effect of contemporary exchanges in the substitution of both ligands on the structures of final complexes are investigated .…”

“…For this purpose, we choose fluorine atom as the substitution group because of its special properties. Indeed, the presence of fluorine as the most electronegative element impresses deeply on the properties of chemical and material and their application . Growing number of fluorinated compounds in the various areas such as pharmaceutical, agricultural and material science endorse this fact –.…”

Exceptional sensitivity to the synthetic approach and halogen substituent for Zn(ii) coordination assemblies with 5-halonicotinic acids

“…In this context, the crystal growth of products can be usually performed by conventional solvent evaporation or layer diffusion approach. 12 In our previous work, 5-halonicotinic acids (HL-X, X = F, Cl, or Br) and 5-methylnicotinic acids have been revealed to be suitable candidates for different coordination assemblies, which interestingly show dynamic supramolecular response (singlecrystal-to-single-crystal transformation 13 ) and well-defined structural regulation by the solvent, 13,14 halogen substituent, 14 anion 15 and so on. [3][4][5] During the formation of crys-talline solids in solutions by different synthetic pathways, the mechanism basically follows a liquid nucleation model, which is distinct from that for solid-state reactions (mainly involves the diffusion of atoms or ions from the surface to the interior of the reactants).…”

“…[7][8][9][10][11] In comparison, coordination assemblies regulated by different synthetic approaches have been rarely demonstrated. 12 In our previous work, 5-halonicotinic acids (HL-X, X = F, Cl, or Br) and 5-methylnicotinic acids have been revealed to be suitable candidates for different coordination assemblies, which interestingly show dynamic supramolecular response (singlecrystal-to-single-crystal transformation 13 ) and well-defined structural regulation by the solvent, 13,14 halogen substituent, 14 anion 15 and so on. As a continuation of this program, we will present here a systematic study on the assembling reactions of HL-X (X = F, Cl, or Br) with Zn(II) using different synthetic routes, in order to further illustrate their influences on such coordination supramolecular systems.…”

A Novel (3,4,9)-Connected 3D Metal–Organic Framework Based on the Non-Planar Tricarboxyl Tecton and Zn5O4-Cluster SBU

“…[18][19][20] On the one hand, the Zn 5 O 4 [Zn 5 (m 3 -OH) 3 (m 2 -OH)] motif can be considered as the metallic polyhedral nodes, and is connected to two neighbouring Zn 5 O 4 motifs via the coordination linkage of carboxylate groups and Zn-O bonds, and simultaneously extended by seven L ligands to construct the overall net (Fig. S3, Supplementary Material).…”