Synthesis, crystal structure and supramolecularity of [Cu(tba)2] complex (tba=deprotonated of 3-benzoyl-1,1,1-trifluoroacetone)

The copper β-diketonate complex [Cu(tba)2] (3) (tba=deprotonated of 3-benzoyl-1,1,1-trifluoroacetone) was prepared by the direct reaction of Cu(OAc)2·H2O (2) (OAc=O2CMe) with two equivalents of H-tba (1). The formation of 3 was monitored by FT-IR and UV–Vis spectroscopy. Complex 3 crystallized in a monoclinic space group P2(1)/n with unit cell parameters a=10.3719(3), b=5.65410(10), c=16.9974(2)Å, V=995.47(4)Å3, and Z=2. The crystal structure of 3 consists of a neutral [Cu(tba)2] complex sphere, wherein the geometry about the Cu2+ is precisely planar. The complex spheres are self-assembly stacked, face-to-face, via π–π interactions forming 1-D supramolecular chain.