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K⊂{[Fe$^{II}$(Tp)(CN)$_{3}$]$_{4}$[Co$^{III}$($^{pz}$Tp)]$_{3}$[Co$^{II}$($^{pz}$Tp)]}: a neutral soluble model complex of photomagnetic Prussian blue analogues

Garnier, D.; Jimenez, J.-R.; Li, Y.; Bardeleben, J. von; Journaux, Y.; Augenstein, T.; Moos, E. M. B.; Gamer, M. T.; Breher, F.; Lescouezec, R.

Straightforward access to a new cyanide-bridged {Fe$_{4}$Co$_{4}$} “molecular box” containing a potassium ion, namely K⊂{[Fe$^{II}$(Tp)(CN)$_{3}$]$_{4}$[Co$^{III}$($^{pz}$Tp)]$_{3}$[Co$^{II}$($^{pz}$Tp)]} (1) (with Tp and $^{pz}$Tp = tris- and tetrakis(pyrazolyl)borate, respectively), is provided, alongside its full characterisation. A detailed analysis of the molecular structure (X-ray diffraction, mass spectrometry, NMR spectroscopy) and electronic properties (EPR spectroscopy, SQUID magnetometry, UV/Vis spectroscopy, cyclic voltammetry) reveals that 1 shows slow magnetic relaxation and a remarkable photomagnetic effect at low temperature which is reminiscent of some FeCo Prussian Blue Analogues (PBAs), and is ascribed to a photo-induced electron transfer. However, in contrast with these inorganic polymers, the overall neutral compound 1 is soluble and remarkably stable in organic solvents such as CH2Cl2. Moreover, 1 shows interesting redox versatility, with electrochemical experiments revealing the possible access to six stable redox states.

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Verlagsausgabe §
DOI: 10.5445/IR/1000060041
Veröffentlicht am 23.10.2018
DOI: 10.1039/c6sc01435f
Zitationen: 22
Web of Science
Zitationen: 22
Zugehörige Institution(en) am KIT Institut für Anorganische Chemie (AOC)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator ISSN: 2041-6520
KITopen-ID: 1000060041
Erschienen in Chemical science
Band 7
Heft 8
Seiten 4825-4831
Nachgewiesen in Web of Science
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