“…The incorporation of multidentate ligands into the coordination sphere of metals is a well-known strategy for producing highly stable and structurally tunable supramolecular assemblies achieved through various noncovalent interactions between the desired molecular building blocks, inorganic anions, and other constituent units. , The use of naturally occurring substances in crystal engineering is a very convenient way to introduce flexibility into these crystalline solid-state products . However, the aforementioned flexibility in structure is in some cases the limiting factor when it comes to the stability of such compounds, i.e., they undergo various chemical or structural transformations depending on the environmental conditions and external stimuli, even if these stimuli mean only a slight change in temperature or humidity. − On the other hand, from an application point of view, stimuli-responsiveness can be a very valuable property for the development of new devices and technologies. , In this sense, it is very important to optimize and test the conditions under which a particular structural transformation occurs and to establish the correct structure–property correlation. Since metal–organic compounds are usually produced under milder conditions compared to metal oxides, i.e., less energy is consumed, the mass fraction of metals, which are often expensive and scarce, is much lower, and they can be more easily recovered or recycled, and they could be considered in the coming years as an environmentally friendly and sustainable alternative to the materials currently used in devices.…”