catena-Poly[[diaquabis(1,3-dihydro-3-oxoisobenzofuran-1-acetato)copper(II)]-μ-N,N′-(ethane-1,2-diyl)dinicotinamide]

Abstract

The title compound, {[Cu(C10H7O4)2(C14H14N4O2)(H2O)2]n, contains octahedrally coordinated CuII ions ligated by two bis(1,3-dihydro-3-oxo-1-isobenzofuranacetate (dibf) ligands and two trans water molecules, linked by N,N′-(ethane-1,2-diyl)dinicotinamide (edn) ligands into mono-periodic coordination polymer chains. The dibf ligands exhibit a pseudo-mirror positional disorder over two positions in a 89.2 (3)/10.8 (3) ratio; the central amide groups of the edn ligands are disordered pseudo-rotationally in the same ratio. These mono-periodic chain motifs are held into supramolecular di-periodic supramolecular layers by means of N—H...O hydrogen bonding between edn amide groups and unligated dibf carboxylate O atoms. In turn, the supramolecular layers are held by crystal packing forces into the full crystal structure of the title compound.

Keywords

• crystal structure
• coordination polymer
• in situ lactonization
• dibf
• edn