Co_6 (μ_3-Se)_8 (PEt_3)_6·THF, MW=1766.4, space group R, has the trigonal parameters,a=11.890(2)°, α=92.72(2)°, V=1670.4~3, Z=1. Mo Kα radiation, λ=0.71
Fifteen pyridine and substituted benzene diselenides,seleninic acids and seleninic anhydrideshave been synthesized.Among them,4,4’-dipyridinediselenide,bis(2,
Per-and polyfluoroalkyl iodides[R_FI,R_F=Cl(CF_2)_4,1a;Cl(CF_2)_6,1b;Cl(CF_2)_8,1c;n-C_6F_(13),1d;n-C_8F_(17),1e]reacted with cyclic enol ethers such as 2,3-di