All manipulations and procedures were performed either in an inert argon environment or under a vacuum. The elements used in the synthesis of the title compounds (Ba, Cd, P, Pb, and Sr) were sourced from either Sigma-Aldrich or Alfa Aesar and carry a stated purity of, at least, 99 wt%. Due to the high purity of the elements, they were used as received. The elements were loaded, in desired stoichiometric ratios, into alumina crucibles, which were subsequently flame sealed in silica jackets. The vessels were then placed into a programmable muffle furnace for heat treatment. The compounds synthesized, as a result of this inquiry into the Ba-Sr-Cd-P phase diagram, were made using a standard Pb flux technique wherein the elements were loaded with an excess of Pb intended as a solvent for the high temperature reaction. The heat treatment closely followed the optimized synthetic procedures used to obtain the parent Yb 2 CdSb 2 structure:1 the elements were rapidly heated to a peak temperature of 1233 K, allowed to equilibrate at this temperature for 24 hrs, and then slowly cooled to 773 K at a rate of 5 K/hr. Once the temperature of 773 K was reached, the vessels were removed from the furnace and centrifuged at high speeds to remove the excess Pb flux. Due to the experience with air sensitivity of compounds, the vessel was then transferred into an argon-filled glovebox for further manipulations. The crystals presented in this work were extracted from the matrix as black, needle-like crystals that and were used for further structural studies.