A Catenane Assembled through a Single Charge‐Assisted Halogen Bond

Abstract

Getting connected: The formation of pseudorotaxane assemblies between a designed macrocyclic halogen bonding (XB) acceptor (red in scheme) and a series of XB donor threading components was templated by a single halogen bond. The strength of the XB assembly between the pyridine macrocycle and iodopyridinium thread was utilized in the ring‐closing metathesis clipping synthesis of a [2]catenane.

Abnormal synergistic effects between Lewis acid–base interaction and halogen bond in F3B···NCX···NCM

“…Halogen bond [1], a noncovalent interaction between an electron donor and a covalently bonded halogen atom acting as an electron acceptor, has attracted an increasing attention recently [2][3][4][5][6][7][8], because it can act as a molecular linker in molecular recognition [9][10][11], and material science [12][13][14]. Similar with hydrogen bond, halogen bond also exhibits the cooperative effect, which is responsible for its potential applications in crystal structures and supramolecular chemistry.…”

Ion‐Pair Halogen Bonds in 2‐Halo‐Functionalized Imidazolium Chloride Receptors: Substituent and Solvent Effects

“…[5][6][7][8] XBs can be applied, among other fields,i ns upramolecular chemistry [9,10] or anion recognition in solution. [14][15][16][17][18][19][20] In particular,t he interaction of 2-halofunctionalized imidazolium motifs with halide anionst hrough XBs has found several applications,f or instance, in the chloride-templated assembly of ap seudorotaxane in CHCl 3 , [14] taking advantage of the existence of cooperative halogen (CÀ Br···Cl À )a nd hydrogen (NÀH···Cl À )b onds (Scheme1a). [14][15][16][17][18][19][20] In particular,t he interaction of 2-halofunctionalized imidazolium motifs with halide anionst hrough XBs has found several applications,f or instance, in the chloride-templated assembly of ap seudorotaxane in CHCl 3 , [14] taking advantage of the existence of cooperative halogen (CÀ Br···Cl À )a nd hydrogen (NÀH···Cl À )b onds (Scheme1a).…”

Interplay between N∙∙∙H, N∙∙∙X and π∙∙∙X interactions in the complex pairing of pyrazine with hypohalous acids: A NBO and QTAIM (quantum theory of atoms in molecules) analysis

“…Extensive studies have shown that many properties of the halogen bond are analogous to those of the hydrogen bond [12][13][14]. For example, concerning strength, halogen bonds are comparable to hydrogen bonds and thus a competition may occur between them, thus in recent years much attention has been paid to it [9,[15][16][17].…”