The asymmetric unit of the title organic salt, 2C(3)H(5)N(2) (+)·C(10)H(6)O(6)S(2) (2-), consists of an imidazolium cation and half a naphthalene-1,5-disulfonate dianion, completed to the full dianion through an inversion center. N-H⋯S and N-H⋯O hydrogen bonds link cations and anions in the crystal, forming a chain propagating along [101].

A low transition temperature mixture formed with 1-butyl-3-(methoxycarbonylmethyl)imidazolium chloride and iron(III) has proven to be an efficient catalyst for the synthesis of quinazolines following a sequence condensation-cyclization-oxidation reactions. The protocol is simple effective coupling 2-acylanilines benzylamines form nitrogen containing heterocycles moderate excellent yields (up 93...

Evidence for reorientation of imidazolium rings in imidazolium methylsulfonate is demonstrated using solid-state NMR. This material is a model system for exciting new proton-conducting materials based on imidazole. Two advanced NMR methods, including 1H-13C and 1H-15N recoupled polarization transfer with dipolar sideband pattern analysis and analysis of the coalescence of 13C lineshapes are use...

The crystal structure of the title mol-ecular salt, C5H11N3 (+)·2Cl(-), was redetermined. In comparison with the previous study [Bonnet et al. (1975 ▸). Bull. Soc. Fr. Mineral. Crist. 98, 208-213.], the positions of some H atoms were corrected, allowing a more accurate description of the hydrogen-bonding scheme. In addition, the absolute structure was also determined. The maximum differences in...

Weakly coordinating anions (WCAs) have been a subject of intensive research in the past decades due to their increasing importance in coordination chemistry and catalysis [1 – 6]. These applications have grown out of basic research into the special properties of anions containing hydrocarbon and fluorocarbon functionality such as [SO3CF3], [B(C6F5)4], [OTeF5] [7]. Owing to the importance of WCA...

Palladium nanoparticles were captured onto spherical silica particles using a molecular band composed of imidazolium chloride and urea moieties to form raspberry-like Pd@SiO2 composites, which can be recovered and reused without any loss of catalytic activity in Suzuki-Miyaura coupling.