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Compounds of general formula [Cr7MF3(Etglu)(O2CtBu)15(Phpy)] [H5Etglu = N-ethyl-d-glucamine; Phpy = 4-phenylpyridine; M = Zn (1), Mn (2), Ni (3)] have been prepared. The structures contain an irregular octagon of metal sites formed around the penta-deprotonated Etglu5– ligand; the chirality of N-ethyl-d-glucamine is retained in the final product. The seven CrIII sites have a range of coordination environments, and the divalent metal site is crystallographically identified and has a Phpy ligand attached to it. By using complementary experimental techniques, including magnetization and specific heat measurements, inelastic neutron scattering, and electron paramagnetic resonance spectroscopy, we have investigated the magnetic features of this family of {Cr7M} rings. Microscopic parameters of the spin Hamiltonian have been determined as a result of best fits of the different experimental data, allowing a direct …
American Chemical Society
Publication date: 
26 Jun 2014

Elena Garlatti, Morten A Albring, Michael L Baker, Rebecca J Docherty, Hannu Mutka, Tatiana Guidi, Victoria Garcia Sakai, George FS Whitehead, Robin G Pritchard, Grigore A Timco, Floriana Tuna, Giuseppe Amoretti, Stefano Carretta, Paolo Santini, Giulia Lorusso, Marco Affronte, Eric JL McInnes, David Collison, Richard EP Winpenny

Biblio References: 
Volume: 136 Issue: 27 Pages: 9763-9772
Journal of the American Chemical Society