307307-57-9Relevant academic research and scientific papers
Thermal decomposition of Prussian blue analogues of the type Fe[Fe(CN)5NO]
Inoue, Hidenari,Narino, Shuichi,Yoshioka, Naoki,Fluck, Ekkehard
, p. 685 - 690 (2000)
The structure and properties of the thermal decomposition products of Fe[Fe(CN)5NO] · x H2O (x = 5～6) have been studied by Moessbauer and FT-IR spectroscopy, X-ray diffraction and conductivity measurements. The valence state and coordination environment of the iron ions change dramatically when the nitrosyl ligand is eliminated by heat-treatment under vacuum at 200 °C. The dark blue product obtained by heat-treatment under vacuum at 250 °C is characteristic of the mixed-valence state in Prussian blue analogues. The electrical conductivity of the dark blue product is higher by a factor of 103 than that of the starting material because of the mixed-valence state between Fe(III)[Fe(II)(CN)5] and Fe(II)[Fe(III)(CN)5]. Heat-treatment under vacuum at 350°C yields a new product Fe(II)[Fe(II)(CN)4] the crystal structure of which is different from that of the starting material. The electrical conductivity of the decomposition product obtained at 350 °C is about 105 times higher than that of the starting material.
