When the cold solution of 7-K is treated with 0.5 molar equivalent of large sterically hindered TIPSOTf, the iron diazide (ii) complex 9 can be obtained, in which N2 is silylated alone, and the phenyl group is still combined with iron.
When the cold solution of 7-K was treated with 0.5 mole of high steric hindrance tipsotf, a diazo iron (II) complex 9 was obtained, in which N2 was silylated alone, while phenyl was still bound to iron.<br>