You may also wish to search for items by Steger.
Only one matching reference was found.
Steger, B.; Oberhammer, H.; Grobe, J.; Le Van, D., Reactive E:C (p-p) systems. 7. Gas-phase structures of perfluoro-2-phosphapropene, CF3P:CF2, and its cyclic dimer, (CF3PCF2)2, Inorg. Chem., 1986, 25, 18, 3177, https://doi.org/10.1021/ic00238a017 . [all data]