Ferromagnetic Ni-II Discs

Richard T. W. Scott , Leigh F. Jones , Ian S. Tidmarsh , Barbara Breeze , Rebecca H. Laye , Joanna Wolowska , Daniel J. Stone , Anna Collins , Simon Parsons (1) , Wolfgang Wernsdorfer (2) , Guillem Aromi (3) , Eric J. L. Mcinnes (4) , E.K. Brechin

1 Department of Chemistry
2 NEEL - QuantECA - Circuits électroniques quantiques Alpes
3 Departament de Quimica Inorganica
4 School of Chemistry [Manchester]

A family of planar disc-like hexa-, octa- and decametallic Ni-II complexes exhibit dominant ferromagnetic exchange. The deca- and octametallic clusters [Ni-10(II)(tmp)(2)(N-3)(8)(acac)(6)(MeOH)(6)] (1, H(3)tmp = 1,1,1-tris(hydroxymethyl)propane; acac = acetylacetonate) and [Ni-8(II)(thme)(2)(O2CPh)(4)(CI)(6)(MeCN)(6)(H2O)(2)] (2, H(3)thme = 1,1,1-tris(hydroxymethyl)ethane) represent rare examples of Ni-II-based single-molecule magnets, and [Ni-10(II)] (1) possesses the largest barrier to magnetisation reversal of any Ni-II single-molecule magnet to date.

Domaines: Physique [physics]

Richard T. W. Scott, Leigh F. Jones, Ian S. Tidmarsh, Barbara Breeze, Rebecca H. Laye, et al.. Ferromagnetic Ni-II Discs. Chemistry - A European Journal, 2009, 15 (45), pp.12389-12398. ⟨10.1002/chem.200901865⟩. ⟨hal-00982574⟩