Synthesis,Characterization, and Crystal Structures of [Cu(ca2en)2]ClO4, and [Cu(ca2en)(PPh3)2]ClO4 Complexes |
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Authors: | Soraia Meghdadi Mehdi Amirnasr KurtJ Schenk Saeed Dehghanpour |
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Abstract: | Synthesis, spectroscopy, and crystal structures of Cu(ca2en)2]ClO4 ( 1 ) and Cu(ca2en)(PPh3)2]ClO4 ( 2 ) (ca2en=N,N′‐bis(trans‐cinnamaldehyde)ethylenediimine) are reported. Compound 1 crystallizes in the orthorhombic space group Pbca, with a=12.5647(7), b=21.8203(11), c=27.992(2) Å, V=7674.3(7) Å3, Z=8. Compound 2 crystallizes in the triclinic space group P , with a=13.0540(11), b=14.2935(13), c=14.9863(13) Å, α=84.130(2), β=69.761(2), γ=87.749(2)°, V=2609.8(4) Å3, Z=2. The coordination polyhedron about the CuI center in the two complexes is best described as a distorted tetrahedron. The 1H‐NMR and electronic spectra of these complexes are also reported and discussed. The cyclic voltammetry of the complexes indicate a quasireversible redox behavior for complex 1 (E1/2=0.51 V). However, complex 2 displays an irreversible oxidation wave at 0.91 V. A weak emission is observed for complex 2 in CHCl3 at room temperature. |
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