Tuning the Magnetic Behavior via Dehydration/Hydration Treatment of a New Ferrimagnet with the Composition of K0.2Mn1.4Cr(CN)6·6H2O

• Published in: Inorganic chemistry Vol. 45; no. 3; pp. 999 - 1004
• Main Authors: Lü, Zhengliang, Wang, Xinyi, Liu, Zhiliang, Liao, Fuhui, Gao, Song, Xiong, Rengen, Ma, Hongwei, Zhang, Deqing, Zhu, Daoben
• Format: Journal Article
• Language: English
• Published: American Chemical Society 06.02.2006
• ISSN: 0020-1669; 1520-510X
• DOI: 10.1021/ic051145f

A new complex (1) of Prussian blue analogue with the composition of K0.2Mn1.4Cr(CN)6·6H2O was prepared and characterized structurally as well as magnetically. The crystal structure of complex 1 was determined by X-ray diffraction analysis. The results indicate that complex 1 consists of a 3D cubic lattice similar to those of Mn3[Cr(CN)6]2·xH2O, Mn3[Co(CN)6]2·xH2O, Cd3[Cr(CN)6]2·xH2O, and Cd3[Co(CN)6]2·xH2O. Magnetic measurements show that complex 1 is a ferrimagnet with T c = 66 K. It is interesting to note that the magnetic behavior of complex 1 can be substantially modulated through a dehydration/rehydration treatment. The T c value of this ferrimagnet increases to 99 K after dehydration reaching a 23.4% weight loss, and it decreases back to 66 K after the dehydrated sample reabsorbs water molecules.