Which idea led for the discovery of xenon fluorides ?

Explanation

Neil Bartlett obtained an orange yellow solid from the reaction of xenon with `PtF_6` to have `Xe^(+)[PtF_6]^-` . He noticed earlier that `O_2` with `PtF_6` reacts to give `O_2^(+)[PtF_6]^-` and since ionisation enthalpies of `O_2` and Xe were close to each other (Xe=1170, `O_2`=1175 kJ `mol^(-1)`), he could succeed to prepared `Xe^(+)[PtF_6]^(-)` from Xe and `PtF_6`