in solid matrix Irradiation (UV/VIS); metal was deposited into methane-doped Ar-matrix (5percent CH4) on cold (12 K)CsI window, metal:Ar ratio was 1:600; hydride was formed during irradn. at 200-400 nm for 10 min; it was decomposed during irradn. at 200-800 n m irradn. for 10 min; detected by IR and UV;

in gas byproducts: CH3, C2H6; Irradiation (UV/VIS); laser photolysis;

in not given byproducts: H2; dimethylgallane was heated at 70°C;