Synthesis And Structural Characterization of the PR3-XEUXBA5CU8O18 System حسب Rojas Cruz, Fredy Gonzalo, Parra Borda, Julian Andres, Sáchica Castillo, Ever Humberto, Cruz Pacheco, Andrés Felipe, Segura Peña, Sully, Parra Vargas, Carlos Arturo