F in neat (no solvent) byproducts: GeH3, GeH2, Ge; other Radiation; production of atomic fluorine by microwave discharge through mixt. of F2 in helium; react. with GeH4 in flow cell described; IR spectroscopy;;

in gaseous matrix Irradiation (UV/VIS); Cr reacted with GeH4 in solid Ar at 4 K, irradiated at >470 nm, annealedto 30 K; monitored by IR;