Abstract: The crystal and molecular structure of the title compound was determined fromsingle crystal X-ray diffraction. The complex crystallizes in monoclinic space groupP2₁/n with Z= 2. Lattice parameters are: a = 7.768(2), b= 13.976(2), c= 9.045(3)Å,6 = 113.12(3)?. The structure was solved by the direct method and Fourier techniques andrefined full-matrix least-squares to R = 0.035 for 1579 reflections. The Cu²⁺ ion is 6-cooordinate, being bonded to two oxygen toms from two unidentate nitrate groups andtwo nitrogen atoms and two oxygen atoms from two organic ligands. Each Cu²⁺ ion iscoordinated In a distorted octahedral configuration.

Key words: Copper nitrate, 1, 8-Naphthyridine-N-oxide, Complex, Crystal structure