No abstract

In the mol­ecule of the title compound, [ZnCl2(C11H10N2)], the ZnII atom is four-coordinated in a distorted tetra­hedral configuration by two N atoms from the 6-methyl-2,2′-bipyridine ligand and by two Cl atoms. There are π–π contacts between the pyridine ring and the five-membered ring, and also between the pyridine rings, [centroid–centroid distances = 3.685 (3) and 3.757 (3) Å, respectively].

The present work demonstrates the oxidation of numerous alcohols in the presence of H2O2 using triple‐shelled CuNiFe2O4 hollow structure as a heterogeneous catalyst. The hollow spheres were characterized by SEM, EDS, TEM and XRD. Different reaction factors such as the effect of amount catalyst, various solvents and amount oxidant were checked and discussed. Moreover, catalyst also exhibits outstanding catalytic performance for the diverse alcohols. Results showed that the triple‐shelled CuNiFe2O4 hollow structure can be recycled for up to six cycles without substantial loss in catalytic activity.

A magnetic nanostructured core–shell Fe3O4@SiO2/EP.EN.EG.Cu has used as an efficient heterogeneous catalyst for the synthesis of 1,4‐disubstituted 1,2,3‐triazole derivatives through click reaction, under mild reaction conditions. A variety of epoxides, alkyl or benzyl halides was used to afford the corresponding 1,4‐disubstituted 1,2,3‐triazoles. The catalyst could be easily separated by using an external magnet from the reaction mixture and reused seven times without significant loss of catalytic activity.

Key indicators: single-crystal X-ray study; T = 298 K; mean (C-C) = 0.004 Å; R factor = 0.034; wR factor = 0.101; data-to-parameter ratio = 25.0.In the title compound, [ZnCl 2 (C 12 H 12 N 2 )], the complete molecule is generated by crystallographic mirror symmetry, with the Zn atom and both chloride ions lying on the reflecting plane, yielding a distorted ZnN 2 Cl 2 tetrahedral coordination for the metal ion. In the crystal, there are -contacts between the pyridine rings [centroid-centroid distance = 3.7857 (17) Å ]. Related literature