The asymmetric unit of the title compound, [InCl3(C12H12N2)(C3H7NO)]·0.5H2O, contains two independent InIII complex molecules with similar structures and one lattice water molecule. In each complex molecule, the InIII atom is six-coordinated in a distorted octahedral geometry, formed by two N atoms from the chelating 5,5′-dimethyl-2,2′-bipyridine ligand, one O atom from a dimethylformamide and three facial Cl atoms. In the crystal, the lattice water molecule is linked to the complex molecules via O—H⋯Cl hydrogen bonds. Further weak C—H⋯Cl and C—H⋯O hydrogen bonds result in the formation of a three-dimensional structure.
Key indicators: single-crystal X-ray study; T = 298 K; mean (C-C) = 0.020 Å; disorder in main residue; R factor = 0.083; wR factor = 0.224; data-to-parameter ratio = 17.9.In the crystal of the title polymeric compound, [HgI 2 (C 4 H 5 N 3 )] n , the Hg II cation is located on a twofold rotation axis and is coordinated by two I À anions and two 2-aminopyrazine ligands in a distorted HgI 2 N 2 tetrahedral geometry. In the crystal, the 2-aminopyrazine ligand is equally disordered over two positions about an inversion center, and bridges the Hg II cations with pyrazine N atoms to form a polymeric chain running along the c axis. In the polymeric chain, the amino groups link to the coordinated I À anions via intermolecular N-HÁ Á ÁI hydrogen bonds.
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The title compound, [Cd2Br4(C24H16N2)2], consists of a centrosymmetric dimeric unit in which two Br atoms bridge two CdII atoms, forming a four-membered ring. A terminal Br atom and a bidentate chelating 4,7-diphenyl-1,10-phenanthroline ligand complete a square-pyramidal geometry for the CdII atom. In the crystal, C—H⋯Br hydrogen bonds and π–π contacts between the pyridine and phenyl rings [centroid–centroid distances = 3.704 (4) and 3.715 (4) Å] lead to a three-dimensional supramolecular structure.
Magnetic dicationic ionic liquid (MDIL) was successfully prepared and evaluated as phasetransfer catalyst for nucleophilic substitution reactions. The reactions was occurred in water and furnished the corresponding benzyl derivatives in high yields. No evidence for the formation of byproduct for example benzyl alcohol of the reaction was observed and the products were obtained in pure form without further purification.
In the title compound, [CoBr2(C12H12N2)], the CoII atom is four-coordinated in a distorted tetrahedral geometry by two N atoms from a 6,6′-dimethyl-2,2′-bipyridine ligand and by two terminal Br atoms. Intermolecular C—H⋯Br hydrogen bonds and π–π stacking between the pyridine rings in the bc plane [centroid–centroid distance = 3.725 (3) Å] are present in the crystal structure.
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