The structure, stability, and electron affinity of the even numbered molecular platinum fluorides PtF2n (n = 1-4) were studied by scalar relativistic density functional and coupled cluster methods. The di, tetra, and hexafluorides possess tripler ground states, while PtF8 is a singlet. Formation of the latter from PtF6 and F-2 is found to be endothermic. Differences between adiabiatic and vertical electron affinities are only significant for PtF2.