7.30 What inspired N. Bartlett for carrying out a reaction between Xe and PtF6?

Neil Bartlett initially carried out a reaction between oxygen and PtF6. This resulted in the formation of a red compound, O2+[PtF6]-.

Later, he realized that the first ionization energy of oxygen (1175 kJ/mol) and Xe (1170 kJ/mol) is almost the same. Thus, he tried to prepare a compound with Xe and PtF6.

He was successful and a red-coloured compound, Xe+[PtF6]- was formed.