Quantum computing holds the promise of solving problems that will forever remain out of reach for classical computers. These feats are based on the application of two fundamental properties of matter at the quantum scale: superposition and entanglement. The fundamental information processing unit of a quantum computer is the quantum bit, or qubit for short. Multiple systems have been proposed as qubits. We concentrate our efforts on the use of magnetic molecules, more specifically in a setup based on carbon nanotubes, where input and output can be controlled by electric potentials and currents.<br/>We report here on the synthesis and characterization of an iron tripyrazolylborate complex bearing an amine functionality in position 3 on one of the pyrazole rings . The complex present spin crossover properties making it an ideal qubit candidate. The amine group provides a point of entry for a variety of functionalization, in particular attachment to the carboxylic acid functions of an oxidized carbon nanotube.<br/>The amine derivative was obtained by reduction of the analogue bearing a protective nitro group (see figure). Comparison of the spin crossover properties of the 3-amino, 3-nitro, 4-amine and 4-nitro substituted derivatives provides insight on the influence of electronic and steric effects on the magnetic properties of the iron center.

Amine-functionalized trispyrazolylborate iron spin crossover complexes: A key element for the preparation of electrically addressable molecular magnetic quantum bit

254th National Meeting (2017)

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