Bimetallic neutral palladium (II) bis(dithiolene) complex: Unusual synthesis,structural and theoretical study |
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Authors: | Flavia Pop Diana G. BranzeaThomas Cauchy Narcis Avarvari |
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Affiliation: | UMR 6200, CNRS, laboratoire Moltech-Anjou, UFR Sciences, université d’Angers, Bâtiment K, 2, boulevard Lavoisier, 49045 Angers, France |
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Abstract: | The unusual synthesis of the dimeric dithiolene complex [(PPh3)Pd(ethylene-1,2-dithiolate)]2 (1), containing the simplest dithiolene ligand, has been achieved through the reaction between tetrathiafulvalene (TTF) and Pd(PPh3)4. The complex shows a folded structure in the solid state, according to single crystal X-ray analysis performed on crystals grown from two different system solvents and conditions, with a central [Pd2S2] ring folded about the S···S hinge by 67.9°. The optimized geometry at the DFT level is in excellent agreement with the experimental structure. Moreover, TD-DFT calculations allowed the assignment of the low energy band arising at 576 nm to the HOMO→LUMO transition, between frontier orbitals having mixed metal and dithiolene character. |
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Keywords: | S ligands Tetrathiafulvalenes Bimetallic complexes Structure elucidation Theoretical calculations |
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