[CrF(O2 C(t) Bu)2 ]9 : Synthesis and Characterization of a Regular Homometallic Ring with an Odd Number of Metal Centers and Electrons.
Robert J WoolfsonGrigore A TimcoAlessandro ChiesaInigo J Vitorica-YrezabalFloriana TunaTatiana GuidiEva PavariniPaolo SantiniStefano CarrettaRichard E P WinpennyPublished in: Angewandte Chemie (International ed. in English) (2016)
The first regular homometallic ring containing an odd number of metal centers is reported. The ring was synthesized by means of amine-templated self-assembly. Extensive physical characterization studies, including magnetic measurements, powder inelastic neutron scattering (INS), and DFT calculations, show that the molecule has a near perfect match to the expected behavior for a frustrated system with the lowest energy pair of S=1/2 spin states separated by only 0.1 meV (0.8 cm(-1) ).