Electron transfer phase transition and oxidization process in NaxCo0.44Mn0.56[Fe(CN)6]0.90 (0.00 ≤ x ≤ 1.60). Issue 100 (17th November 2021)

• Record Type: Journal Article
• Authors: Iwaizumi, Hiroki; Shibata, Takayuki; Moritomo, Yutaka
• Is Part Of: Chemical communications. Volume 57:Issue 100(2021)
• Page Start: 13700
• Page End: 13703
• Publication Date: 2021-11-17
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc05727h
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : The electron transfer phase transition in Prussian blue analogues reverses the order of oxidation among Fe, Mn, and Co. Abstract : We investigated the phase diagram of Na x Co0.44 Mn0.56 [Fe(CN)6 ]0.90 in the entire Na concentration range of 0.00 ≤ x ≤ 1.60. We found that the compound shows an electron transfer (ET) phase transition in a wide x range of 0.19 ≤ x ≤ 1.38. The extended ET model well reproduces the variation of the [Fe 2+ (CN)6 ] 4− and [Fe 3+ (CN)6 ] 3− concentration at the phase transition. The ET phase transition reverses the oxidation process of the compound; the process is in the order of Co, Mn, and Fe (Fe, Mn, and Co) in the low (high) temperature phase.