title: On/off photoswitching in a cyanide-bridged {Fe2Co2} magnetic molecular square.
abstract: A repeatable bidirectional paramagnetic ↔ diamagnetic photomagnetic effect has been observed in the cyanide-bridged Fe-Co square complex {[Fe{B(pz)(4)}(CN)(3)](2)[Co(bik)(2)](2)}(ClO(4))(2)·3H(2)O [B(pz)(4) = tetrapyrazolylborate, bik = bis(1-methylimidazol-2-yl)ketone]. Magnetic measurements and low-temperature single-crystal X-ray diffraction experiments have shown that a complete electron transfer from the diamagnetic Fe(II)-Co(III) state to the paramagnetic Fe(III)-Co(II) metastable state is induced by 808 nm laser light irradiation, whereas the diamagnetic state is recovered in an almost quantitative yield under irradiation at 532 nm.
authors: Institut Parisien de Chimie Moléculaire (IPCM), UMR 7201, UPMC Paris 6, 4 place Jussieu, 75252 Paris cedex 5, France.
authors: Abhishake
authors: A
authors: Mondal
authors: Yanling
authors: Y
authors: Li
authors: Mannan
authors: M
authors: Seuleiman
authors: Miguel
authors: M
authors: Julve
authors: Loïc
authors: L
authors: Toupet
authors: Marylise
authors: M
authors: Buron-Le Cointe
authors: Rodrigue
authors: R
authors: Lescouëzec