Yes, Cu(II) salt can form the Cu(I) metal complex, which is stable in nature and has distorted square planar geometry. According to a research paper by Ursula Mazur and co-workers, Cu(II) tends to form square planar or octahedral complexes with axial elongation, yet tetrahedral distortions are pretty common. In several cases, inter-ligand steric repulsion leads to a distorted geometry. However, the combination of a distorted geometry and close M···F contacts has not been reported so far; in other cases, M···F contacts are axial, allowing the conventional (N, O) donor ligands to adopt a square-planar geometry.
http://ursula.chem.yale.edu/~batista/publications/CF-Cu_Complex.pdf
Its 1,10- phenanthroline and 2-amino-5-methyl-1,3,4-thiadiazole ligand.
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