Ferrocenyl imidazolium salts as a new class of anion receptors with C–H···X− hydrogen bonding

Synthesis of a new bidentate ferrocenyl N-heterocyclic carbene ligand precursor and the palladium (II) complex trans-[PdCl2(C∧fc∧C)], where (C∧fc∧C)=1,1′-di-tert-butyl-3,3′-(1,1′-dimethyleneferrocenyl)-diimidazol-2-ylidene

“…1(a). This ferrocene imidazolium salt has been subsequently shown to act as an anion receptor [17,18]. Similarly, the general structure of the ferrocene substituted imidazolium salt has also been used to prepare chiral carbene ligands [19][20][21], Fig.…”

Alkylation of aromatic compounds with multi-component Lewis acid catalysts of ZnCl2 and ionic liquids with different organic cations

“…The nature of ring hydrogens in dialkylimidazolium and their interactions with various types of anions have been well documented [17,18]. In BMIMBr-ZnCl 2, ring hydrogen makes hydrogen bonding with Cl -of [ZnCl 2 Br] - [13,19]. Hydrogen bonding interactions are evident by the appearance of bands at 3000-3200 cm −1 , as shown in Fig.…”

Hybrid Ligands with N‐Heterocyclic Carbene and Chiral Phosphaferrocene Components

“…Such behaviour was also observed for the related ferrocene compounds and led to an investigation of their application as anion receptors. [10] The molecular connectivity of the imidazolium cation 3 + as the iodide salt containing an additional molecule of water could be unambiguously confirmed by X-ray crystal structure determination (Figure 1). However, because of the poor crystal quality the precision of the geometrical parameters does not allow for a meaningful discussion.…”