Prediction of Tetrazole Sensitivity Properties from Crystal Structures: Parameters were collected for a total of 33 tetrazole HEMs including twenty-four 1,5-tetrazoles and nine 2,5-tetrazoles from crystal structures. Using forward stepwise linear regression, we identified a 3-term statistical model for tetrazole decomposition temperature (Figure ). This model yielded predicted values of Tdec within 44 °C of the experimental value for 87% of all 31 tetrazoles in the dataset with reported Tdec values, with an MAE of 19 °C for the 27 tetrazoles comprising the training set. The remaining four compounds that were predicted with larger errors are shown in Figure and 5C (gray entries).