%0 Journal Article %T The Flight of the Monarch: [Cu(L)(CH3CN)(PPh3)]ClO4 (L = 2,5-Diphenyl-3,4-bis(2-pyridyl) Cyclopenta-2,4-dien-1-one) %J Inorganic Chemistry Research %I Iranian Chemical Society %Z 2538-1865 %A Amiri, Ahmad %A Binaeizadeh, Mohammad Reza %A Fadaei, Farzaneh %A Schenk-Joß, Kurt %D 2018 %\ 12/01/2018 %V 2 %N 1 %P 141-151 %! The Flight of the Monarch: [Cu(L)(CH3CN)(PPh3)]ClO4 (L = 2,5-Diphenyl-3,4-bis(2-pyridyl) Cyclopenta-2,4-dien-1-one) %K Cu(I) complexes %K Diene %K crystal structure %K Electrochemistry %K Electrocatalyst %R 10.22036/icr.2017.27926.1026 %X The mononuclear complex [Cu(L)(CH3CN)(PPh3)]ClO4, (1), (L= 2,5-diphenyl-3,4-bis(2-pyridyl)cyclopenta-2,4-dien-1-one), has been synthesized and investigated by elemental analysis, IR, 1H NMR, UV-Vis spectroscopic methods and X-ray diffraction. The complex crystallizes in the non-centrosymmetric space group P212121 in accord with the asymmetric (atropisomer) Cu centre. Its coordination polyhedron has four vertices and is devoid of any symmetry. The [Cu(L)(CH3CN)(PPh3)]ClO4 is amongst the few MeL complexes crystallizing in a non-centrosymmetric space group. The bite-angle of the bidentate ligand L is 90.92(13)°, indicating some strain in the structure; this entails an enhanced instability of the complex with respect to strongly coordinating solvents. The crystal of 1 owes its cohesion to a multitude of weak C-H...O and C-H... interations. The electrochemistry of the complex shows three reversible ligand-centred reduction processes and an irreversible metal-centred one. This indicates that the coordination of the CuI(CH3CN)(PPh3) moiety to the L leads to the delocalization of electron density from L to the CuI(CH3CN)(PPh3) moiety. %U https://www.inorgchemres.org/article_46809_d427f8e32ff6101649416d0da7089b57.pdf