Synthesis and Characterization of a Series of Ruthenium Tris(β‐diketonato) Complexes by an UHV‐STM Investigation and Numerical Calculations

Abstract

A series of ruthenium tris(β-diketonate) complexes was investigated by using electrochemistry, UV/Vis spectroscopy, 1 H NMR and 13 C NMR spectroscopy and FAB mass spectroscopy. Several new mononuclear mixed-ligand ruthenium(III) complexes were prepared: with three dibenzoylmethanate ions (dbm) {[Ru(dbm) 3 ] (1)}, one or two acetylacetonate ions (2,4-pentanedionate, acac) {[Ru(dbm) 2 (acac)] (2)

Observation and manipulation of tris(dibenzoylmethanato)ruthenium molecules by low temperature scanning tunnelling microscopy

“…In previous papers, we reported the first STM characterization of mononuclear ruthenium complexes with different ligands [18,19]. These molecules are of peculiar interest in the route towards the synthesis of larger entities devoted to charge transfer.…”

Interaction between perylene-derivated molecules observed by low temperature scanning tunneling microscopy

“…In order to create electronic devices based on molecules, one of the principal challenges is to be able to observe and control molecular assemblies. Thereafter, these assemblies will be used to study charge transfer for example between a single molecule and a polymeric structure [1] or the choosen molecules will be the 5 precursors of larger systems able to facilitate charge transfer [2,3]. The molecular interactions within these assemblies is often driven by competitive forces either between the molecules in the assembly [4] or between the molecules and the substrate on which they are deposited [5] leading to different molecular lattices.…”

A Controlled Quantum SWAP Logic Gate in a 4-center Metal Complex

“…As required, this molecule is a non symmetric tetranuclear complex where all the peripheral ruthenium entities are different from each other due to their different coordination spheres (R 1 = R 2 = R 4 ). Several necessary chemical steps towards this target molecules have been made [11,12,13] The spin interaction between the electrons on sites M 1 and M 2 is described by an effective magnetic coupling by considering only two 1-qubits, one on each of the two target centers. The initial state is prepared within two paired electrons on the site M 4 and a single electron on each one of the sites M 1 , M 2 and M 3 .…”

“…To determine the swap oscillation frequency and the time-dependent probability to find the system in a given quantum state, we have solved the time-dependent Schrödinger equation using (11). In this representation, the Rabi oscillation frequency between, for instance, an initial state…”

“…The calculation of this effective coupling is performed by partitionning the total active space Hamiltonian H given in (11) as H = PHP+ QHQ+ PHQ+ QHP, where P = |φ i φ i |+ φ f φ f and Q = |φ m φ m | are the projectors respectively defined on the qubits and the control subspaces. Then, starting from a given initial state, the time-dependent probability to find the system in a final state is given by P f (t) = φ f ψ(t) , where |ψ(t) = ∑ n C n (t) |ψ n and |ψ n are the (11) eigenvectors.…”