Photochemical Reaction of CpFe(CO)2SiMe3 (Cp = η5-C5H5) with a Trihydrosilane Containing a Bulky Amino Substituent, Bis(trimethylsilyl)aminosilane

A photochemical reaction between CpFe(CO)2SiMe3 and (Me3Si)2NSiH3 in hexane gave the silylyne-bridged triiron complex Cp3Fe3(CO)4SiN(SiMe3)2 (2) and a diiron complex bridged by a four-membered cyclic silylene, Cp2Fe2(CO)2(μ-CO)(μ-SiN(SiMe3)2SiMe2CH2) (3). In contrast, the silylene- and alkyne-bridged triiron complex Cp3Fe3{μ2-SiHN(SiMe3)2}{μ3-COSiH2N(SiMe3)2}{μ3-η2-C2O2-SiHN(SiMe3)2} (4) was formed as the main product by a similar reaction in toluene.