A computational methodology for designing ionic liquids (ILs) with an enhanced water absorption capacity to be used in absorptionrefrigeration systems is presented here. It is based on increasing the hydrogen bond (HB)-acceptor ability of the anion and combining it with a cation that presents a weak cation–anion interaction. Employing this strategy, we identified and prepared three novel dianio...

The cation and the anion in the title salt, (C(6)H(16)N)[SnCl(4)(C(6)H(4)NO(2))], are linked by an N-H⋯O hydrogen bond. The Sn(IV) atom in the stannate anion is chelated by the pyridine-2-carboxyl-ate group and exists in a cis-SnCl(4)NO octa-hedral geometry. The cation is disordered over two positions in a 0.564 (1):0.436 (1) ratio.

In the title compound, CH5N2O(+)·C7H5O6S(-), the dihedral angle between the benzene ring and the mean plane of the uronium cation is 76.02 (8)°. The carboxyl group in the anion is twisted by 1.47 (9)° from the benzene ring. In the crystal, the cation is linked to the anion by weak O-H⋯O and N-H⋯O hydrogen bonds and π-π inter-actions [centroid-centroid distance = 3.8859 (8) Å], forming a three-d...

We have synthesized a series of structurally novel chiral ionic liquids which have a either chiral cation, chiral anion, or both. Cations are an imidazolium group, while anions are based on a borate ion with spiral structure and chiral substituents. Both (or all) stereoisomeric forms of each compound in the series can be readily synthesized in optically pure form by a simple one-step process fr...

The role of the anion on ionophore properties valinomycin was studied in a model floating bilayer lipid membrane (fBLM) using supporting electrolytes containing K+ with four different counter species (ClO4–, H2PO4–, Cl–, and F–). electrochemical impedance spectra indicate that resistance decreases decrease Gibbs free energy solvation. IR demonstrate does not readily bind to KH2PO4, KCl, KF elec...

In present research work, anion exchange membranes based on quaternized polysulfone with ammonium cation moieties (QAPSF) were prepared by chloromethylation, amination and alkalization. The chloromethylated polysulfone were characterized by 1HNMR spectroscopy and functionalization degree was determined according to peak area integration. Ion transport properties (ionic conductivity, ion exchang...

The asymmetric unit of the title compound, [Cu(C(6)H(15)NO(3))(H(2)O)(2)]SO(4)·H(2)O, contains a complex cation, a sulfate anion and one uncoordinated water mol-ecule. In the complex cation, the Cu(II) ion is coordinated by five O atoms (three of which are from the triethano-lamine ligand and two from coordinated water mol-ecules) and one N atom of the triethano-lamine ligand in a typical Jahn-...

A complex of N, N, N', N', -tetramethylated ethylenediamine, TMEDA, with CuCI is prepared. The crystal and molecular structure of this complex is characterized by a single-crystal X-ray diffraction study. The complex is found to contain [Cu (TMEDA) ] cation which is nearly tetrahedral and the [CuCI ) anion is linear which Cu lies on a center of symmetry. Crystals are monoclinic space grou...

In the title compound, C(8)H(14)N(3) (+)·BF(4) (-)·H(2)O, the cation, anion and water molecule all lie on mirror planes. The BF(4) (-) anion is disordered over two orientations with occupancies refined to 0.57 (2) and 0.43 (2). The water mol-ecule is linked to the cation via an O-H⋯N hydrogen bond. Weak inter-molecular O-H⋯F, C-H⋯O and C-H⋯F hydrogen bonds consolidate the crystal packing.

The title compound, C(10)H(13)N(2)O(4) (+)·Cl(-), comprises a Cl(-) anion and a protonated aminium cation. The crystal packing is stabilized by cation-anion N-H⋯Cl hydrogen bonds and N-H⋯O hydrogen bonds, building an infinite two-dimensional network parallel to the (001) plane. The S absolute configuration at the chiral center was deduced from the synthetic pathway and confirmed by the X-ray an...