CoH2O63CoH2O62

CoH2O63CoH2O62 is a reported mixed cobalt‑hydroxide hydrate compound that has appeared in limited inorganic chemistry literature. The formula suggests the presence of two cobalt centers coordinated with a large number of water molecules, implying a polymeric or cluster structure rather than a discrete molecular entity. The stoichiometry can be interpreted as two cobalt ions each associated with a distinct hydrate, possibly involving different oxidation states of cobalt (Co(II) and Co(III)) within the same solid. Such arrangements are typical for layered hydroxide phases, where cobalt ions are octahedrally coordinated by oxygen atoms from hydroxide groups and water ligands, forming extended sheets that can intercalate additional water molecules.

Synthesis of CoH2O63CoH2O62 is generally achieved by co‑precipitation from aqueous solutions of cobalt salts under controlled pH and temperature conditions, followed by aging or hydrothermal treatment to promote crystallization. Characterization techniques such as X‑ray diffraction, thermogravimetric analysis, and infrared spectroscopy have been employed to elucidate its structural features and hydration level.

Potential applications of cobalt hydroxide hydrates include use as precursors for cobalt oxide catalysts, electrochemical electrodes, and in the preparation of magnetic materials. The high water content of CoH2O63CoH2O62 influences its thermal stability, with dehydration occurring in multiple steps upon heating, ultimately yielding cobalt oxide phases. Further systematic studies are required to clarify its exact crystal structure, stoichiometry, and functional properties.