DOI 10.5518/207 The dielectric and elastic constant data for an oxadiazole based bent-core liquid crystal are included in this dataset along with similar data for mixtures with another oxadiazole based bent-core liquid crystal. Calculated data for the elastic constants for the liquid crystal are also included in the DOI. The dielectric data consists of the dielectric anisotropy as a function of temperature for the liquid crystal whilst the elastic constant data consists of the experimental elastic constants for the liquid crystal. Details of the phase diagram of the mixtures are included. DSC data and polarizing optical microsopy images of compound 1 and 2 are included in the DOI. Files: Compound_1_and_2_and_Mixtures_-_ Dielectric_Anisotropy_and_Elastic_Constants_vs_T-Tni.xlsx Compound_1_-_Calculated_Elastic_Constants_vs_T-Tni.xlsx Compound_1_-_ Discretization_of_analytical_elastic_constants_vs_tau.xlsx Compound_1_and_2_Phase_Diagram.xlsx Compound_1_Elastic_Constants_vs_Order_Parameter.xlsx Compound_1_Torsional_Potentials_vs_Dihedral_Angles.xlsx Compound_1_DSC.txt Compound_2_DSC.txt General_oxadiazole_bent_core_structure.png Compound_1_POM_images.docx Compound_2_POM_images.docx torsional_OMeOEt_kJmol.txt These files contain experimental data on the dielectric anisotropy and elastic constants as functions of reduced temperature as well as calculated elastic constants as a function of both order parameter and reduced temperature. Phase transition temperatures of all samples (included as a phase diagram), torsional potentials of methyl, methoxy and ethoxy substituents as well as DSC traces and POM images are all included in the DOI.