Table : The distribution of errors in the 36 claimed 'successful' syntheses. The X symbol denotes the error is present. Error 1 is a very poor fit, such that the fitted model is meaningless. Error 2 is where a different CIF was used for refinement compared with that in the paper, and on Materials Project. Error 3 is where the predicted structure has ordered cations but there is no evidence for order, and a known, disordered version of the compound exists. Error 4 is where the compound is correctly identified, but is already reported.