Synthesis and Structure of the Monolayer Hydrate K03CoO2 x 04H2O
arXiv:cond-mat/0503165 · doi:10.1016/j.ssc.2005.03.007
Abstract
The monolayer hydrate (MLH) K03CoO2 x 04H2O was synthesized from K06CoO2 by extracting K+ cations using K2S2O8 as an oxidant and the subsequent intercalation of water between the layers of edge-sharing CoO6 octahedra. A hexagonal structure (space group P63/mmc) with lattice parameters a = 2.8262(1) Angstrom, c = 13.8269(6) Angstrom similar to the MLH Na036CoO2 x 07H2O was established using high-resolution synchrotron X-ray powder diffraction data. The K/H2O layer in the K-MLH is disordered, which is in contrast to the Na-MLH. At low temperatures metallic and paramagnetic behavior was found.
11 pages, 5 figures, 1 table, to be published in Solid State Communications