Sevgi Kansiz

Crystal structure and Hirshfeld surface analysis of 7-eth­oxy-5-methyl-2-(pyridin-3-yl)-11,12-di­hydro-5,11-methano­[1,2,4]triazolo[1,5-c][1,3,5]benzoxadiazo­cine

In the crystal, N—H⋯N hydrogen bonds link the molecules into the supramolecular chains propagating along the c-axis direction.

Synthesis, crystal structure and Hirshfeld surface analysis of tetra­aqua­bis­(isonicotinamide-κN1)cobalt(II) fumarate

In the complex cation, the CoII atom, located on an inverse centre, is coordinated by two isonicotinamide and four water molecules in a distorted O4N2 octahedral geometry. The fumarate anion is located on another inverse centre and is linked to neighbouring complex cations via O—H⋯O and O—H⋯N hydrogen bonds and weak C—H⋯O hydrogen bonds. In the crystal, the complex cations are further linked by O—H⋯O, N—H⋯O an weak C—H⋯O hydrogen bonds, forming a three-dimensional supramolecular architectecture.