Received 13 June 2013
The CuII atom in the title compound, [Cu(C16H10ClN2O)2], is located on an inversion center and is tetracoordinated by two N and two O atoms from two bidentate 1-[(E)-(2-chlorophenyl)diazenyl]naphthalen-2-olate ligands, forming a square-planar complex. In the crystal, molecules are linked via weak C-HO and C-HCl hydrogen bonds, forming chains propagating along . There are also - interactions present involving adjacent naphthalene rings [centroid-centroid distance = 3.661 (13) Å].
For general background to azo compounds and their use in dyes, pigments and advanced materials, see: Lee et al. (2004); Oueslati et al. (2004). For related structures, see: Tai et al. (2010); Lin et al. (2010).
Data collection: APEX2 (Bruker, 2006); cell refinement: SAINT (Bruker, 2006); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and Mercury (Macrae et al., 2008); software used to prepare material for publication: WinGX (Farrugia, 2012).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2613 ).
The authors thank the MESRS (Algeria) for financial support. MB especially thanks the Algerian MESRS for the financial support of a PNR project.
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