Two coordination polymers based on 2,2′-biimidazoles and d¹⁰ metal ions: syntheses, structures, and luminescence

Syntheses, crystal structures, and fluorescent properties of two 2-D Cd(II) complexes based on 2-((1H-1,2,4-triazol-1-yl)methyl)-1H-benzimidazole and 1,2,4,5-benzenetetracarboxylate

“…These results suggest that change of anions influences the coordination modes of carboxylate and N-heterocyclic ligand, influencing the coordination environment of the central metal ions and the detailed architecture of the complexes [13][14][15][16]. Similar behavior is observed in other complexes based on carboxylates and N-heterocyclic ligands [34][35][36]. Further efforts on the design and preparation of complexes with other carboxylates and N-heterocyclic ligands are underway in our lab.…”

Construction of Coordination Polymers from Semirigid Ditopic 2,2′-Biimidazole Derivatives: Synthesis, Crystal Structures, and Characterization

“…Furthermore, both the ligands L1 and L2 acted as bidentate bridging ligands. In 3 , only imidazole nitrogen atoms [Zn–N Im = 2.031(2) Å and 2.032(2) Å] are involved in coordination, and the Zn–N Im distances are close to those found in molecules such as [Zn­(Me 2 biim)­Cl 2 ] n . In 4 only pyridine nitrogen atoms are involved in coordination, while imidazole rings remained free of coordination.…”

“…Over the past few decades, 2,2′-biimidazole (biim) and its derivatives have received much attention due to their versatile chemistry. − However, construction of novel CPs from imidazole and biim derivatives is less thoroughly studied. , With the aim of construction of new CPs, we have chosen two biim derivatives: 1,1′-bis­(pyridin-3-ylmethyl)-2,2′-biimidazole ( L1 ) and 1,1′-bis­(pyridin-4-ylmethyl)-2,2′-biimidazole ( L2 ) as the semirigid ditopic ligands (Figure ). The presence of a freely rotatable methylene (CH 2 ) spacer between biim and pyridyl units provides the required flexibility to the ligand.…”