Thermal and pressure-induced spin crossover in a novel three-dimensional Hoffman-like clathrate complex

Autores UPV
Revista New Journal of Chemistry


The synthesis and crystal structure of the interpenetrated metal-organic framework material Fe(bpac) 2[Ag(CN) 2] 2 (bpac = 4,4¿-bis(pyridyl)acetylene) are reported along with the characterization of its spin crossover properties by variable temperature magnetometry and Mössbauer spectroscopy. The complex presents an incomplete stepped spin transition as a function of temperature that is modified upon successive thermal cycling. The pressure-induced transition has also been investigated by means of high pressure Raman spectroscopy using a diamond anvil cell. The results show that it is possible to reach the thermally-inaccessible fully low spin state at room temperature by applying hydrostatic pressure to the sample. © 2011 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.