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Cluster-based compounds have attracted the attention of emergent materials design because of their stability, tunability, and functionality that can be used in materials design. Here, we reported a newly discovered cluster compound – Pd3Se10, which is comprised of Pd6Se20 cubes, with palladium (Pd) atoms located at 6 faces and selenium (Se) atoms located at the 12 edges and 8 corners. We have been able to successfully synthesize Pd3Se10 through solution-phase reactions and established an electrochemically balanced route towards preparing high yields (76%) of material. The powder X-ray diffraction (PXRD) characterization showed that the resulting product is of high purity and large average crystal size (27.6 nm), and other Pd-Se phases are not present. The thermal gravimetric analysis and differential scanning calorimetry (TGA-DSC) shows there is a phase transition at 355°C, during which Pd3Se10 decomposes to orthorhombic-PdSe2 (o-PdSe2). The diffuse reflectance accessory UV-vis (DRA UV-Vis) and diffuse reflectance infrared Fourier transformation spectroscopy (DRIFTS) results indicate that this material is a semiconductor with an indirect band gap of 1.16 eV. Overall, this work lays the foundation for the future investigation of this unique cluster into a broad range of applications.