A review. In this short article, the oxidn. of secondary carbon-hydrogen bonds of alkanes catalyzed by [Fe(S,S-PDP)(MeCN)2](SbF6)2 [i.e., bis(acetonitrile)[2,2'-[[(1R,1'R,2S,2'S)-[2,2'-bipyrrolidine]-1,1'-diyl-ホコN1,ホコN1']bis(methylene)]bis[pyridine-ホコN]]iron(2+) hexafluoroantimonate(1-) (1:2)] using H2O2 as an oxidant as developed by M.C. White is introduced. [on SciFinder(R)]