metal-organic compounds
The structure of the title compound, [Cu(C6H9O4)2(C3H4N2)2]n, is polymeric, joining two CuII-trans(imidazole)2 units by two extended adipate monoanions. The metal ion at the centre of symmetry has a highly distorted octahedral coordination; the two longer bonds are formed to the protonated carboxylate O atoms [Cu1—O3 = 2.499 (2) Å] and the octahedron is completed by bonds to two imidazole N atoms and two deprotonated carboxylate groups. The `building block' of the polymer is an 18-membered ring of maximum dimensions 10.61 Å and 5.61 Å. Their molecular packing in space group C2/c, however, prevents channel formation of this size. The polymeric chains of the acid form very strong intramolecular hydrogen bonds via O3—HO2 across the metal centre.
Supporting information
Crystallographic Information File (CIF) | |
Structure factor file (CIF format) |
CCDC reference: 128576