Barskaya, Irina Yu. et al. published their research in Dalton Transactions in 2017 | CAS: 14781-45-4

Spin-state-correlated optical properties of copper(IIII)-nitroxide based molecular magnets was written by Barskaya, Irina Yu.;Veber, Sergey L.;Suturina, Elizaveta A.;Sherin, Peter S.;Maryunina, Kseniya Yu.;Artiukhova, Natalia A.;Tretyakov, Evgeny V.;Sagdeev, Renad Z.;Ovcharenko, Victor I.;Gritsan, Nina P.;Fedin, Matvey V.. And the article was included in Dalton Transactions in 2017.Application of 14781-45-4 This article mentions the following:

Mol. magnets based on copper(II) ions and stable nitroxide radicals exhibit promising switchable behavior triggered by a number of external stimuli; however, their spin-state-correlated optical properties vital for photoinduced switching were not profoundly studied to date. Herein, the electronic absorption spectra of single crystals of three representatives of this unique family were studied exptl. and theor. in the visible and near-IR regions. The color of the complexes is mainly determined by optical properties of the nitroxide radicals, whereas the Cu(hfac)₂ fragment contributes to the near-IR range with the intensity smaller by an order of magnitude. The thermochromism of these complexes evident upon thermal spin state switching is mainly caused by a spectral shift of the absorption bands of the nitroxides. The vibrational progression observed in the visible range for single crystals as well as for solutions of pure nitroxides is well reproduced by DFT calculations, where the C-C stretching mode governs the observed progression. The anal. of the spectra of single crystals in the near-IR region reveals changes in the energy and in the intensity of the copper(II) d-d transitions, which are well reproduced by SOC-NEVPT2 calculations and owe to the flip of the Jahn-Teller axis in the coordination environment of copper. Further strategies for designing bidirectional magnetic photoswitches using these appealing compounds are discussed. In the experiment, the researchers used many compounds, for example, copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4Application of 14781-45-4).

copper(ii)hexafluor-2,4-pentanedionate (cas: 14781-45-4) belongs to copper catalysts. The applications of Copper-based nanoparticles have received great attention due to the earth-abundant, low toxicity and inexpensive. It is clear from the impact copper catalysis has had on organic synthesis that copper should be considered a first line catalyst for many organic reactions.Application of 14781-45-4

Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”