Thermodynamics of hybrid manganese formate perovskites.

Hybrid organic-inorganic materials, both dense and porous, have gained significant attention in recent years due to their extreme tunability in terms of compositions and functional properties. A deep understanding of their intrinsic stability is crucial to accelerate the discovery of new compositions that are not only functional but also thermodynamically stable. Here, we report the first systematic experimental study of the effect of A-site cations on the thermodynamic stability of a series of hybrid manganese formate perovskites [AH]Mn[HCOO] with AH = CHNH , (CH)NH , (CH)NH , CH(NH) , and C(NH) using acid solution calorimetry.