Abstract
A method was developed for the synthesis of a nitronyl nitroxide containing cyclopentane substituents in positions 4 and 5 of the imidazoline ring, viz., 2-(3-pyridyl)-4,5-bis(spiropentyl)-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl (LCP). The reaction of CuII hexafluoroacetylacetonate with LCP affords different products depending on the reaction conditions: mononuclear [Cu(hfac)2(LCP)2], binuclear [Cu(hfac)2LCP]2, tetranuclear {[Cu(hfac)2]4(LCP)2}, or chain polymer {[Cu(hfac)2]3(LCP)2} n . Temperature changes induce structural transformations accompanied by a change in the spin state in exchange clusters in the solid [Cu(hfac)2LCP]2 and {[Cu(hfac)2]4(LCP)2}.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2132–2140, October, 2013.
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Artiukhova, N.A., Maryunina, K.Y., Fokin, S.V. et al. Spirocyclic derivatives of nitronyl nitroxides in the design of heterospin CuII complexes manifesting spin transitions. Russ Chem Bull 62, 2132–2140 (2013). https://doi.org/10.1007/s11172-013-0312-x
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DOI: https://doi.org/10.1007/s11172-013-0312-x