© The Author(s), under exclusive lic ence to Springer Science+Business Media, LLC, part of Springer Nature 2025 Structures of a family of new h ydrated and anhydrous perrhenates of lead and strontium have been de termined. and Pb(TcO O. The compounds Sr(ReO O, Pb(R eO O, and {Pb O correspond to new structural architectures.