Synthesis and magnetic properties of a 3-D nickel hydroxide capped by succinate

• Published in: Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 1; no. 6; pp. 1099 - 1104
• Main Authors: Fei, Honghan, LaForge, Andrew D., Onyango, Tedmann M., Robins, Jeremy C., Zavalij, Peter Y., Ramirez, Arthur P., Oliver, Scott R. J.
• Format: Journal Article
• Language: English
• Published: 01.01.2013
• Subjects: Anisotropy; Capping; Channels; Cooling; Ferromagnetism; Ion exchangers; Nickel; Three dimensional
• ISSN: 2050-7526; 2050-7534
• DOI: 10.1039/C2TC00428C

We have successfully synthesized a rare example of an open framework nickel oxide with succinate capping the channels. A honeycomb-like layer of 14-membered rings centered in the (1&cmb.macr; 11) plane are connected by vertex-sharing NiO sub(6) octahedra and water resides in the channels. The structure is only the second example of an extended inorganic-organic hybrid material containing 3-D Ni-O-Ni connectivity and was structurally characterized by single-crystal and powder X-ray diffraction. The material displays excellent chemical stability in aqueous solution from pH similar to 1 to 13 and thermal stability to similar to 375 degree C as evidenced by thermogravimetric analysis coupled mass spectroscopy. The Ni super(2+) ions order ferromagnetically below T sub(c) = 5.1 K and anisotropic exchange interactions lead to a field-induced metamagnetic transition and spin-glass-like dependence on cooling conditions in magnetic field.