Layered perovskite-like oxides are solid crystalline substances formed by two-dimensional nanosized perovskite slabs interleaved with cations or cationic structural units. Until present time perovskite-like compounds are actively studied as materials with wide range of important physical and chemical properties such as super-conductivity, colossal magnetoresistance, ferroelectricity, catalytic and photocatalytic activity, thermochemical properties and electrochemical properties. In recent years, there has been a constant interest in using the soft chemistry methods for development of new layered perovskite-like compounds with specified physicochemical properties, as well as design of these materials based on perovskite structure. In the present work the process of formation of hydrated and alcohol derivatives of layered perovskite niobate HCa2Nb3O10 during heating or hydrothermal treatment, was investigated by thermal analysis methods. The conditions for the formation of protonated and hydrated forms, as well as organic-inorganic covalent bonds in interlayer space were established. The thermal stability of the obtained protonated, hydrated and organic-inorganic derivatives was studied in inert and oxidizing atmosphere. Conditions of alcohol derivatives carbonization during pyrolysis process were found. Obtained samples were also characterized using X-ray powder diffraction, SEM and FT-IR spectroscopy.