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Homoleptic and Heteroleptic Ruthenium(II) Complexes Based on 2,6-Bis(quinolin-2-yl)pyridine Ligands - Multiple-Charged-State Modules for Potential Density Memory Storage

DOI: 10.1002/ejic.201403088 DOI Help

Authors: Ion Marin (Academy of Sciences of Moldova) , Constantin Turta (Academy of Sciences of Moldova) , Andrew C. Benniston (Newcastle University) , Ross Harrington (Newcastle University) , William Clegg (Newcastle University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: European Journal Of Inorganic Chemistry , VOL 2015 (5) , PAGES 786-793

State: Published (Approved)
Published: February 2015
Diamond Proposal Number(s): 6749

Abstract: The two ligands 2,6-bis(4-methylquinolin-2-yl)pyridine (L1) and diethyl 2,2-(pyridine-2,6-diyl)bis(quinolone-4-carboxylate) (L2) were used to prepare the homoleptic [Ru(L2)2]-[PF6]2 (RU1) and heteroleptic [Ru(L1)(L2)][PF6]2 (RU2) complexes. DFT calculations (B3PW91,3-21G**) performed on both RU1 and RU2 revealed that redox at the ruthenium site for RU2 is less positive by ca. 110 mV. Consequently, the one-electron ligand-based reduction for RU2 is more cathodic by 80 mV. Electrochemistry experiments confirmed that the prediction is qualitatively correct and that the complexes can each hold up to five electrons reversibly.

Journal Keywords: Ruthenium; N Ligands; Electrochemistry; Structure Elucidation; Density Functional Calculations

Subject Areas: Chemistry, Materials, Information and Communication Technology


Instruments: I19-Small Molecule Single Crystal Diffraction

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