W-Co discrete complex exhibiting photo- and thermo-induced magnetisation

摘要

Molecular (photo)switch: A W?￡?Co photomagnetic discrete complex can be prepared through the self-assembly of preformed building blocks. [Co(bik)_3][{W(CN)_8}_3{Co(bik)_2} _3]×2 H_2O×13 CH_3CN (see figure) exhibits a thermally-induced electron-transfer-coupled spin transition between the two states: {{{m {m Co}}{{{m {m II}}hfill top {m {m HS}}hfill}}}}?￡?W~V?{{{m {m Co}}{{{m {m III}}hfill top {m {m LS}}hfill}}}}?￡?W ~(IV). It also shows photomagnetic effects at low temperature.