Hybrid or metal–organic framework (MOF) perovskites of general composition, ABX3, are known to show interesting properties that can lead to a variety of technological applications. Our first-principle
K4BaNb5O15 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site
