Synthesis and structure of silylene iron complex

Abstract Four phosphorus‐chalcogen chelated hydrido iron(II) complexes 5 – 8 ( o ‐(Ph 2 P)‐ p ‐R‐C 6 H 4 Y)Fe(H)(PMe 3 ) 3 ( 5 : R=H, Y=S; 6 : R=Me, Y=S; 7 : R=H, Y=O and 8 : R=Me, Y=O) were used to synthesize the corresponding silylene hydrido iron(II) complexes. It was found that complexes 5–6 reacted with chlorosilylene 1 to give the silylene iron(II) hydrides 9 – 10 as ligand replacement products of trimethylphosphine by chlorosilylene 1 . Under the same reaction conditions, complex 7 or 8 reacted with chlorosilylene 1 to afford a disilylene iron(I) chloride 11 . Complex 11 can also be synthesized through the reaction of Fe(PMe 3 ) 4 with chlorosilylene 1 . The molecular structures of complexes 9 – 11 were determined by single crystal X‐ray diffraction analysis.