Thermal properties of (NH4)32[Mo138O416H6(H2O)58(CH3COO)6]·approximately 250H2O: on the route to prove the complexity of a nanostructured landscape—especially with different type of H2O ligands—embedded in an ‘ocean’ of water molecules

Derivatographic analysis (TG, DTA and DTG) coupled with mass spectrometry, FTIR spectroscopy as well as water sorption experiments were used to study the thermal properties of (NH4)32 [MoVI 110 MoV 28 O416 H6 (H2O)58 (CH3COO)6]·approximately 250 H2O (1) exhibiting the nanosized ‘giant wheel’ anion. The particular stages of sample transformations are discussed and compared with the known single crystal X-ray structure of (1). The giant wheel type clusters appear approximately to be stable up to 350 °C. Interestingly, the complex system can be formally considered as a nanostructured landscape embedded in an ‘ocean’ of water molecules.