Bis(lysine-κ2N,O)hexa-μ2-oxido-hexa-oxidobis(1,10-phenanthroline-κ2N,N′)dicopper(II)tetravanadium(V) tetra-hydrate

摘要

The heterometallic coordination compound [Cu(Lys)(phen)]2V4O124H2O (Lys is the amino acid lysine, C6H14N2O2, and phen is 1,10-phenanthroline, C12H8N2) lies across an inversion centre. Two [Cu(Lys)(phen)]2+ units coordinate to the cyclo-vanadate fragment and the formula unit is completed by four solvent water molecules. The lysine ligand is in the zwitterionic form and chelates the CuII atom via the -NH2 and -COO donor groups, while the "-NH3 + group is involved in intramolecular hydrogen bonds with the central [V4O12] 4 core and with solvent water molecules. In the crystal, N—HO and O—HO hydrogen bonds connect the components of the structure to form a threedimensional network. The crystal structure is further stabilized by – interactions involving the phen ligands. The lysine group is disordered over two sets of sites with refined occupancies of 0.534 (11) and 0.466 (11).