Structure and redox behavior of Ru(II)-diene complexes |
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| Authors: | Enrique Meléndez Vilmarí López Arnold L Rheingold |
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| Institution: | a Department of Chemistry, University of Puerto Rico, P.O. Box 9019, Mayaguez, PR 00681, USA
b Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716, USA |
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| Abstract: | A series of Ru(acac)2(η4-diene) complexes containing cis- and trans-diene coordination have been investigated by cyclic voltammetry to correlate structural bonding and conformation patterns of diene ligands with redox behaviors. The solid-state structure of Ru(acac)2(2,3-dimethyl-1,3-butadiene) has been determined by single crystal X-ray diffraction methods. Ru(acac)2(2,3-dimethyl-1,3-butadiene) crystallizes in the monoclinic space group C2/c with a = 12.368(2) Å, b = 17.0600(2) Å, c = 16.0110(2) Å, β = 98.4405(10)° and V = 3341.38(10) Å3 for Z = 8. A structural comparison between several Ru-trans-η4-diene complexes and Ru-η4-1,3-cyclohexadiene revealed no difference in the Ru-C(diene) bond distances. However, through cyclic voltammetry experiments these species demonstrated different redox behavior, as function of the coordinated diene ligand. |
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| Keywords: | trans-η4-Diene coordination cis-η4-Diene coordination Ru(II)-diene Cyclic voltammetry Solid-state structure |
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